flow controllers - sun & wind energy · flow controllers most of the suppliers from germany,...
TRANSCRIPT
Sun amp Wind Energy 1201254
Solar thermal market overview ndash valveS and expanSion veSSelS
Flow controllersSolar valves enable a circulating thermal fluid to transport the absorbed heat to
its required destination Who manufactures these special components for the
solar circuit Our SUN amp WIND ENERGY market overview provides the answer
I f a solar system were merely a simple circuit in which the thermal medium runs around unhindershyed to transfer heat to the water then everything
would be perfectly straightforward Unfortunately the paths of the fluid are in many cases winding and complex To ensure that the solar fluid always takes the most efficient route and thus to make optimum use of the transported heat numerous valves are positioned along the way safety valves balancing valves threeshyway control valves shutshyoff valves and air vents all contribute to a troubleshyfree process
The heating installation trade already knows most of those valves from conventional heating sysshytems In a solar circuit however valves are required to withstand significantly higher temperatures Furshythermore solar thermal systems are usually comshybined with a second heat source Here too valves are needed to achieve optimum interconnection of the different heating systems and to charge the stratified storage tank
In response to the demand for valves specificalshyly designed for hot water preparation and space heating support via solar systems most companies have launched a separate solar product line (see table on page 55 with technical details following in the tables from page 56 ff) The market leaders for solar valves are Italian and Spanish manufacturers such as Caleffi Giacomini Orkli and Tiemme Raccorderie In North and Central Europe it is the Swedish company Esbe Taconova from Switzerland and Watts Industries Germany which are especially well known for their comprehensive product range The recently restructured German company TA Heimeier GmbH also covers the full spectrum of soshylar accessories Valves from TA and Heimeier and expansion vessels from Swiss manufacturer Pneumatex have been united under one roof One of the latest innovations presented by the company is the solar stop valve Globo S in corrosionshyresistant red brass
Kollektorkreislauf
Brauchwasserkreislauf
Solar circuit
Circuit of tap water
Diagram of a solar system for hot water Various valves are already necessary in this case The more complex a system becomes for example in combination with space heating support the more such control components are required Graphic Watts Industries
Sun amp Wind Energy 12012 55
Flow controllers
Most of the suppliers from Germany the UK Italy Austria Poland Switzerland and Spain manufacture several components Others specialise on just one product eg air vents or expansion vessels Source of all tables company data SampWE research
One company new to the SampWE market overview in 2011 is the Spanish manufacturer Industrias Ibaionda After supplying storage tanks to the solar sector for the past ten years Ibaionda unveiled a seshyries of expansion vessels for solar systems (see table on page 60) at Intersolar Europe 2011 in Munich Sunex SA from Poland is also included in the overshyview for the first time this year Alongside collectors and solar pump units the company offers a diversity of valve products for example balancing and shutshyoff valves as well as bleed valves and air separators Global Water Solutions Ltd attracted attention to itshyself at ISH in Frankfurt in March The British company has been producing expansion vessels for the sector for five years
Controlling the flow
How many planes are permitted to land on the runways of a particular airport each day This decision is made by the air traffic controller in accordance with the size of the airport the number of planes wishing to land and the prevailing weather The balancing valves in a solar system (see table on page 56) perform a very similar function They regulate the flow rate of the solar fluid in the individual branches of a solar circuit in response to the current system status and ambient conditions Flow sensors acquire the volumetric flow rate for example for yield measurements
New products have been presented by the German distributor Sferatec a vendor for products
Company CountryExpansion
vesselsValves
(Air) separators
Air vents
Solar pump units
Website
Safety valves
Balancing valves
Shut-off valves
Three-way
valves
Motor valves
Mixing valves
AC-Fix Global Piping Systems SL Spain x x x x x x wwwac-fixcom
Afriso-Euro-Index GmbH Germany x x wwwafrisode
Anton Eder GmbH Austria x wwweder-expansionat
Barberi Rubinetterie srl Italy x x x x x x wwwbarberiit
Belimo Automation AG Switzerland x x wwwbelimocom
Caleffi Solar Germany x x x x x x wwwcaleffide
CIMM SpA Italy x wwwcimmspacom
Elbi spa Italy x wwwelbiit
Esbe AB Sweden x x x x wwwesbese
FAR Rubinetteria spa Italy x x x x wwwfareu
Flamco Wemefa GmbH Germany x x x wwwflamcode
Gebr Tuxhorn GmbH amp Co KG Germany x x wwwtuxhornde
Giacomini GmbH Italy x x x x x wwwgiacominicom
Global Water Solutions LtdUnited Kingdom
x wwwglobalwatersolutionscom
Ibaiondo SP Spain x wwwibaiondocom
ICMA spa Italy x x x x x x wwwicmaspait
IMT Armaturen AG Switzerland x x x wwwimt-chcom
ITAP Italy x x x x x wwwitapit
IVR Italy x x x wwwivrvalvoleit
Korex (Air-Sep) Germany x wwwkorexde
MFC Solar Italy x x x wwwmfcsrlit
MUT Meccanica Tovo Spa Italy x wwwmutmeccanicacom
Officine Rigamonti Spa (OR) Italy x x x wwwofficinerigamontiit
Orkli S Coop Spain x x x x x x x x x wwworklicom
Oventrop GmbH amp Co KG Germany x x x x x x x x wwwoventropde
PAW GmbH amp Co KG Germany x x wwwpaweu
Reflex Winkelmann GmbH amp Co KG Germany x x x wwwreflexde
Sferatec Gebaumludetechnik Vertriebs- GmbH
Germany x x x x x x x x x wwwsferatecde
Spirotech Netherlands x x wwwspirotechde
Sunex S A Poland x x x x x wwwsunexpl
TA Heimeier GmbH Germany x x x x x wwwtaheimeierde
Taconova GmbH Switzerland x x x wwwtaconovacom
Tiemme Raccorderie spa Italy x x x x x x x x x x wwwtiemmecom
Varema SpA Italy x wwwvaremcom
Voss Entluumlftungs-Armaturen GmbH Germany x x wwwpurgomatde
Watts Industries Germany x x x x x x x x x wwwwattsindustriescom
Zilmet Deutschland GmbH Germany x wwwzilmetde
Overview of component suppliers
Sun amp Wind Energy 1201256
Solar thermal market overview ndash valveS and expanSion veSSelS
Regulating valves (for hydraulic balancing)
Supplier ProductMax operating temperature [degC]
Short-time temperature [degC]
Barberi 02D 28D 140 na
Barberi 31D 32D 140 na
Caleffi Solar SetCal Solar 130 na
Orkli Solar 110 na
Oventrop hydrocontrol STR 200 na
Sferatec solar combi valve 130 180
Taconova Tacosetter Bypass Solar 130185
185 195
Taconova Tacosetter Inline 100130
130 na
TA Heimeier STAD STAD-C 150 na
Watts Industries Watt FlowSol 160 na
Mixing valves
Supplier ProductMax operating
temperature [degC]Temperature setting
range [degC]
AC-fix 8005 series 100 30 to 65
AC-fix 8010 series 100 35 to 55
Barberi Art PO4PO5 110 30 to 65
Caleffi Solarthermostatic mixing valve
110 30 to 65
Caleffi Solarthermostatic mixing valve 1
100 35 to 55
Esbe Esbe Basic 35-60deg 2 90 35 to 60
Esbe Esbe Premium 48deg 2 90 48
Esbe thermostatic mixing valve
110 45 to 65
Esbe solar series VTS520S550
110 50 to 75
Esbe solar kit series VMC300 VMC500
95 35 to 60
Esbe solar kit series VMC500
95 45 to 65
FAR Rubinetteria SolarFAR 120 27 to 70
Giacomini thermostatic mixing valve R 156
85 38 to 60
ICMA spaArt S100-102 S107-109
100 30 to 60
ICMA spa Art S103 S112 85 20 to 65
ITAPthermostatic mixing valve 475
100 32 to 50
MFC Solar srl MFC 3070-3074 110 na
MUT RA solar series 85 30 to 60
Orkli Solar solar model 130 40 to 50
Orkli Solarhigh-temperature model
130 50 to 70
Oventrop Brawa-Mix 90 45 to 65
Oventrop Brawa-Mix 100 35 to 50
Taconova Novamix Standard 100 20 to 70
Taconova MT 53 Novamix Value
100 45 to 65
Taconova Novamix High Capacity
100 35 to 75
Taconova Novamix Compact 100 30 to 70
Tiemme Raccor-derie
4738 SUN 100 30 to 55
Gebr TuxhornTubra-Therm mixing valve
90 35 to 65
Watts Industries MMV-C MMV-Sol 3 110 30 to 65
Safety valves
Supplier ProductOperating temperature [degC]
Operating pressure [bar]
AC-fix 8004 series 160 10
Afriso-Euro-Index diaphragm safety relief valve
160 6
Barberi safety valve 160 3 to 10
Caleffi Solar safety valve 160 4 to 10
Esbe Series VSB 100300 95 to 120 16
FAR 2006 Solar FAR 160 up to 10
Flamco Wemefa Prescor Solar safety valve
160 6 to 10
ICMA Art S120Art S121 160 6
ITAPdiaphragm safety relief valve 478
160 10
IVR IVR 443 160 6
Giacomini safety valve R140C 200 4
MFC MFC 3060-63 120 4 to 6
OR Sunshine 0480 160 10
Orkli Solar safety valve 160 3 to 10
Watts Industries SV-Sol 160 35 to 10
Shut-offball valves
Supplier Product Operating temperature [degC]
Barberi shut-off valve 140
IMT Armaturen Art 594 150
ITAP 365 S 160
IVR IVR 440441 180
MFC 3020-22 150
MFC 303032 150
OR Sunshine 0439 200
Sunex feed ball valve 160
Taconova Novazone Ball 110
TA Heimeier Globo S 150
TA Heimeier TA 500 TA 60 170 to 185
Tiemme Raccorderie
2330 SUN 180
Watts IndustriesKFE-Solar SK 20 Quickfill RIA 10 Sol
na
Three-way valves
Supplier Product Operating temperature [degC]
BELIMO Automation AG Lineg Hydronic Solutions
Solar valve EXT-SW-S 2
160
Esbe VTD300 100
FAR300729 Solar FAR (230 V) 2
130
FAR300829 Solar FAR (24 V) 2
na
Orkli Solar Solar zone valve 2 160
Tiemme Raccorderie
2134 SUN (24 and 230 V) 2
160
Watts Industries3-way zone valve 3131 2
100
The valves listed in the table have all been designed specifically for solar circuits The higher the temperature resistance the better Domestic mixing valves are indeed installed in the drinking water circuit But they also need a special quality factor for the use with solar systems because as higher temperatures are encountered in solar systems anti-scalding protection is significant for these valves 1 with anti-scalding protection 2 setting motor 3 anti-scalding protection 50 degC
Sun amp Wind Energy 12012
THE BESTTHE BESTTHE BESTTHE BESTTHE BESTSIMPLY
High exibility AISI 316L Material (14404) Long lifetime
FLEXIBLE METAL HOSE1
EPDM High temperature
2 INSULATION
Easy assembly without using any additional tool Long lifetime Gasket-free
FITTINGS4
infoayvazcom wwwayvazcom
Long Lifetime High Protection Anti-ozone Anti-UV Anti- ame
BRAIDING3
OF HIGH-QUALITY INSULATION
ilan_Simply_the_Bestindd 1 11042011 154541
Three-way valves
Photo Sferatec
Photo Orkli
Photo Tiemme
Photo Esbe
Photo Watts Industries
Photos (2) Belimo
from Italian manufacturers and by Watts Industries Watts Industries Germany which sells valves to sysshytem suppliers and as OEM products to industrial cusshytomers has brought the new flow meter ldquoFlowTurnrdquo onto the market Presented for the first time at Intersolar the new sensor measures flow rates and temperatures over a wider range than previous
Sun amp Wind Energy 1201258
Solar thermal market overview ndash valveS and expanSion veSSelS
temperature lies above the nominal zone temperashyture it is diverted to connection A
Another category of valves serves to ensure that the medium is able to flow unhindered along the chosen path air separators and vents (see table on page 59) which relieve potential blockages caused by air bubbles in the piping Air separators are installed where the most air accumulates namely at the highest point of a system In the case of a solar system that means on the roof Usually air venting is performed afshyter filling and then at regular maintenance intervals The system is then closed with a shutshyoff valve (see table on page 56) so that no solar fluid can evaporate at high temperatures The Dutch company Spirotech takes a different approach A roofshymounted air separashytor allows continuous venting and closes automaticalshyly if the temperature exceeds a defined threshold (see SampWE 92010 page 98) In many cases an air separashytor is also installed at the pump unit where it similarshyly provides for continuous venting
Poor air venting can lead to extensive damage to a solar system If air accumulates in the system the pump is no longer able to circulate the solar fluid At the same time the fluid itself will age to a greater exshytent and the system will be more likely to suffer corshyrosion From the scientific perspective there is still
A somewhat different design ndash the air separator from Polish manufacturer Sunex Photo Sunex
Air vents for solar systems from Italian manufacturer IVR Photo IVR
The Swiss company IMT has been supplying air separators (left) and fast air vents for solar systems for over 25 years Photo IMT
models Watts Industries hopes that this will help to enhance the efficiency of solar thermal systems
According to the manufacturer FlowTurn is able to measure flow rates up to 40 Lmin The product designers in Landau have additionally refined the sensors such that they now also re-turn exact measurements for very low flow rates below 1 Lmin
Sferatec has added a new electronically controlled valve for proportional and linear flow regulation into its portfolio The flow rate is ad-justed remotely by way of a ball valve with which it is possible to set the desired flow rate for a particular solar temperature The compa-ny believes this to be an essential trend more sensors for flow monitoring and control and thus for regulation of the overall solar system
Taking the right turn
Three-way control valves represent a new category in this yearrsquos SampWE overview Zone valves from six com-panies are compared in the table on page 56 Control valves for solar circuits must be capable of handling correspondingly higher temperatures The figures quoted by the manufacturers lie between 100 and 160 degC Belimo FAR Orkli Solar Tiemme and Watts Industries all make explicit mention of a motor con-troller for their three-way valves The zone valve VTD300 from Esbe is fitted with a thermostat for a particular zone temperature The valve reacts to the
inflowing fluid and changes the direction of the outflow accordingly
Zone valves with three outlets determine the con-nection to which the ther-mal medium is navigated Esbe explains the control
function of the three-way zone valve as follows the user sets the required zone temperatures
and if the temperature of the inflowing fluid lies below the
nominal temperature then it is diverted to connec-tion B Otherwise if the
Sferatec balancing valve Photos (2) Sferatec
The new FlowTurn sensor from Watts Industries incorporated into a solar pump unit
Balancing valve from Watts Industries Photos (2) Watts Industries
Solar combi-valve with flow sensor from Sferatec
Sun amp Wind Energy 12012 59
Supplier ProductMax operating temperature [degC]
Operating pressure [bar]
Features
AC-Fix 8001 series 180 10 na
Caleffi Solar
automatic air vent
200 10with shut-off valve
high-performance automatic air vent DiscalAir
200 10in combina-tion with air separator
FAR 2042 - SOLAR-FAR 160 10 na
Flamco Wemefa
Flexvent Top Solar
180 10with shut-off valve
Giacominiautomatic air vent R99S
150 10 na
ICMA spaArt S111 160 10 na
Art S110 130 10 na
IMT Armaturen
Elite Solar 125 S 150 05 to 10 na
Original Solar 180 4 na
Minival 121S 150 6 na
ITAP362S automatic air vent
160 10 na
IVR IVR 442 200 10 na
MFC Solar MFC 3000 200 10 na
OR Sunshine 0402 180 10 na
Orkli Solarautomatic air vent
150 6with shut-off valve
Spirotech bv Spirotop Solar 180 10without shut-off valve auto-close
TA Heimeier Zeparo ZUT Solar 160 10 na
Tiemme Raccorderie
1900 SUN auto-matic air vent
180 10with ballshut-off valve
Voss Entluumlftungs-Armaturen
automatic solar air vent PURG-O-MAT 150 ldquoHeatrdquo for heating circuit
150 10short-time 200 degC with ball valve
automatic float air vent PURG-INOX 2000
150 16
increased venting per-formance for large systems
Watts Industries
MV-Sol 160 12roof-mounted with ball valve
Air vents
Supplier ProductMax operating temperature [degC]
Operating pres-sure [bar]
Afriso-Euro-Index solar air separa-tor combination LKS
160 6
Barberi disaerator Y39 180 na
Barberi disaerator exten-sion Y3950A
180 na
Caleffi Solarmicrobubble separator Solar Discal
160 10
Flamco Wemefa Flamcovent Solar EcoPlus
200 10
IMT Armaturen air separator 124 110 6
ICMA Art S740 na na
Orkli Solar air separator 150 6
Reflex Winkelmann Reflex exair solar 180 10
Spirotech Spirovent Solar 180 10
TA Heimeier Zeparo ZUV 160 10
Watts Industries SER-MV 1 150 10
1 short time 200 degC
Air separators
Sun amp Wind Energy 1201260
Solar thermal market overview ndash valveS and expanSion veSSelS
C
M
Y
CM
MY
CY
CMY
K
210x297enpdf 1 2011-12-12 180710
Supplier Product Diaphragm Volume [L] Operating overpressure [bar]Load temperature of diaphragm [degC]
Accessories
Anton Eder Elko flex Solar na 18 to 300 6 70 1 na
Barberi Art 30D butyl 12 to 40 6 8 na na
Caleffi Solar solar expansion vessel butyl-based 12 to 40 10 110 na
Cimm solar rubber 12 to 600 10 100 na
Elbi spa (Sferatec)
series DSDSV SBR 2 to 500 8 10 99 thermostrip
series ASAC EPDM 5 to 24 8 99 replaceable diaphragm
series AFAFL EPDM 35 to 5000 8 10 99 replaceable diaphragm
Flamco Wemefa Solarix butyl 8 to 80 6 110 na
Global Water Solutions Solar Wave butyl 8 to 80 10 130 na
Ibaiondo
SMF na 5 to 24 10 130 na
SMR-P na 10 to 100 10 130 na
SMR na 200 to 700 10 130 na
ICMA spa Art S131 na na na 140 na
Orkli Solarexpansion vessel na 12 to 24 na 130 na
expansion vessel na 35 to 80 na 130 na
Oventrop diaphragm expansion vessel
na 18 to 80 na 70 na
PAW solar expansion vessel butyl 18 to 25 10 100 na
Reflex Winkelmann Reflex S butyl 2 to 600 10 70 na
TA Heimeier
Statico SD butyl 8 to 80 3 10 70 air-proof butyl bladder
Statico SE butyl 120 to 180 3 70 air-proof butyl bladder
Statico SU butyl 140 to 800 3 6 10 70 air-proof butyl bladder
Statico SG butyl1000 to
50006 10 70
air-proof butyl bladder replaceable diaphragm
Varem Solarvarem nitril 5 to 40 6 130 fixed diaphragm
Varem Solarvarem nitril 5 to 40 8 130 replaceable diaphragm
Solarvarem nitril 5 to 300 10 130 replaceable diaphragm
Watts Industries EG-Sol nitril 5 to 40 8 99 na
Zilmet Deutschland
Solarplus butyl-based 12 to 600 10 100 fixed diaphragm (half-shell)
Solarplus TM butyl-based 80 to 500 10 100 replaceable diaphragm
Zilflex Solar Plus Safe butyl-based 18 to 50 10 100integrated heat dissipation
vessel 6 to 15 L
Zilmet Deutschland SolarflexSBR divider diaphragm
12 to 150 6 to 10 70 na
Expansion vessels
1 up to 140 degC with heat dissipation vessel
Heat dissipation vessels
Supplier Product Volume [L]
Anton Eder EV heat dissipation vessel na
Elbi spa (Sferatec) VS-sol 5 to 50
Cimm pre-tank 12 to 24
Oventrop solar heat dissipation vessel 6 to 20
Varem heat dissipation vessel 18
Zilmet Deutschland heat dissipation vessel 5 to 200
Expansion vessel with bladder from Anton Eder Photo Anton Eder
Expansion vessels from Varem some of which feature a replaceable diaphragm Photo Varem
broad scope for optimisation with regard to the removal of air and other gases from solar sysshytems The technical solubility coefficients of various gases in solar fluids are yet to be invesshytigated and documented Determination of these coefficients a series of practical experishyments and the modelling of gas transport in soshylar systems are thus current topics for a reshysearch project at the Institute for Energy Techshynology of TU Dresden and the Laboratory of Nuclear Energy Systems at ETH Zurich The first results from tests performed with an indoor
system have already been presented With solar flushyids in contrast to water as the thermal medium there was apparently no or very little deaeration effect to be achieved with microbubble separators and air vents Influence on the level of gases in the fluid was rather to be attributed to degassing facilities For the case of largeshyscale systems therefore the scientists have framed the hypothesis that deaeration could even be left out altogether Testing under real outdoor condishytions began in June 2011 It remains to be seen whether this hypothesis will prove tenable
Katharina Ertmer
C
M
Y
CM
MY
CY
CMY
K
210x297enpdf 1 2011-12-12 180710
Sun amp Wind Energy 12012 55
Flow controllers
Most of the suppliers from Germany the UK Italy Austria Poland Switzerland and Spain manufacture several components Others specialise on just one product eg air vents or expansion vessels Source of all tables company data SampWE research
One company new to the SampWE market overview in 2011 is the Spanish manufacturer Industrias Ibaionda After supplying storage tanks to the solar sector for the past ten years Ibaionda unveiled a seshyries of expansion vessels for solar systems (see table on page 60) at Intersolar Europe 2011 in Munich Sunex SA from Poland is also included in the overshyview for the first time this year Alongside collectors and solar pump units the company offers a diversity of valve products for example balancing and shutshyoff valves as well as bleed valves and air separators Global Water Solutions Ltd attracted attention to itshyself at ISH in Frankfurt in March The British company has been producing expansion vessels for the sector for five years
Controlling the flow
How many planes are permitted to land on the runways of a particular airport each day This decision is made by the air traffic controller in accordance with the size of the airport the number of planes wishing to land and the prevailing weather The balancing valves in a solar system (see table on page 56) perform a very similar function They regulate the flow rate of the solar fluid in the individual branches of a solar circuit in response to the current system status and ambient conditions Flow sensors acquire the volumetric flow rate for example for yield measurements
New products have been presented by the German distributor Sferatec a vendor for products
Company CountryExpansion
vesselsValves
(Air) separators
Air vents
Solar pump units
Website
Safety valves
Balancing valves
Shut-off valves
Three-way
valves
Motor valves
Mixing valves
AC-Fix Global Piping Systems SL Spain x x x x x x wwwac-fixcom
Afriso-Euro-Index GmbH Germany x x wwwafrisode
Anton Eder GmbH Austria x wwweder-expansionat
Barberi Rubinetterie srl Italy x x x x x x wwwbarberiit
Belimo Automation AG Switzerland x x wwwbelimocom
Caleffi Solar Germany x x x x x x wwwcaleffide
CIMM SpA Italy x wwwcimmspacom
Elbi spa Italy x wwwelbiit
Esbe AB Sweden x x x x wwwesbese
FAR Rubinetteria spa Italy x x x x wwwfareu
Flamco Wemefa GmbH Germany x x x wwwflamcode
Gebr Tuxhorn GmbH amp Co KG Germany x x wwwtuxhornde
Giacomini GmbH Italy x x x x x wwwgiacominicom
Global Water Solutions LtdUnited Kingdom
x wwwglobalwatersolutionscom
Ibaiondo SP Spain x wwwibaiondocom
ICMA spa Italy x x x x x x wwwicmaspait
IMT Armaturen AG Switzerland x x x wwwimt-chcom
ITAP Italy x x x x x wwwitapit
IVR Italy x x x wwwivrvalvoleit
Korex (Air-Sep) Germany x wwwkorexde
MFC Solar Italy x x x wwwmfcsrlit
MUT Meccanica Tovo Spa Italy x wwwmutmeccanicacom
Officine Rigamonti Spa (OR) Italy x x x wwwofficinerigamontiit
Orkli S Coop Spain x x x x x x x x x wwworklicom
Oventrop GmbH amp Co KG Germany x x x x x x x x wwwoventropde
PAW GmbH amp Co KG Germany x x wwwpaweu
Reflex Winkelmann GmbH amp Co KG Germany x x x wwwreflexde
Sferatec Gebaumludetechnik Vertriebs- GmbH
Germany x x x x x x x x x wwwsferatecde
Spirotech Netherlands x x wwwspirotechde
Sunex S A Poland x x x x x wwwsunexpl
TA Heimeier GmbH Germany x x x x x wwwtaheimeierde
Taconova GmbH Switzerland x x x wwwtaconovacom
Tiemme Raccorderie spa Italy x x x x x x x x x x wwwtiemmecom
Varema SpA Italy x wwwvaremcom
Voss Entluumlftungs-Armaturen GmbH Germany x x wwwpurgomatde
Watts Industries Germany x x x x x x x x x wwwwattsindustriescom
Zilmet Deutschland GmbH Germany x wwwzilmetde
Overview of component suppliers
Sun amp Wind Energy 1201256
Solar thermal market overview ndash valveS and expanSion veSSelS
Regulating valves (for hydraulic balancing)
Supplier ProductMax operating temperature [degC]
Short-time temperature [degC]
Barberi 02D 28D 140 na
Barberi 31D 32D 140 na
Caleffi Solar SetCal Solar 130 na
Orkli Solar 110 na
Oventrop hydrocontrol STR 200 na
Sferatec solar combi valve 130 180
Taconova Tacosetter Bypass Solar 130185
185 195
Taconova Tacosetter Inline 100130
130 na
TA Heimeier STAD STAD-C 150 na
Watts Industries Watt FlowSol 160 na
Mixing valves
Supplier ProductMax operating
temperature [degC]Temperature setting
range [degC]
AC-fix 8005 series 100 30 to 65
AC-fix 8010 series 100 35 to 55
Barberi Art PO4PO5 110 30 to 65
Caleffi Solarthermostatic mixing valve
110 30 to 65
Caleffi Solarthermostatic mixing valve 1
100 35 to 55
Esbe Esbe Basic 35-60deg 2 90 35 to 60
Esbe Esbe Premium 48deg 2 90 48
Esbe thermostatic mixing valve
110 45 to 65
Esbe solar series VTS520S550
110 50 to 75
Esbe solar kit series VMC300 VMC500
95 35 to 60
Esbe solar kit series VMC500
95 45 to 65
FAR Rubinetteria SolarFAR 120 27 to 70
Giacomini thermostatic mixing valve R 156
85 38 to 60
ICMA spaArt S100-102 S107-109
100 30 to 60
ICMA spa Art S103 S112 85 20 to 65
ITAPthermostatic mixing valve 475
100 32 to 50
MFC Solar srl MFC 3070-3074 110 na
MUT RA solar series 85 30 to 60
Orkli Solar solar model 130 40 to 50
Orkli Solarhigh-temperature model
130 50 to 70
Oventrop Brawa-Mix 90 45 to 65
Oventrop Brawa-Mix 100 35 to 50
Taconova Novamix Standard 100 20 to 70
Taconova MT 53 Novamix Value
100 45 to 65
Taconova Novamix High Capacity
100 35 to 75
Taconova Novamix Compact 100 30 to 70
Tiemme Raccor-derie
4738 SUN 100 30 to 55
Gebr TuxhornTubra-Therm mixing valve
90 35 to 65
Watts Industries MMV-C MMV-Sol 3 110 30 to 65
Safety valves
Supplier ProductOperating temperature [degC]
Operating pressure [bar]
AC-fix 8004 series 160 10
Afriso-Euro-Index diaphragm safety relief valve
160 6
Barberi safety valve 160 3 to 10
Caleffi Solar safety valve 160 4 to 10
Esbe Series VSB 100300 95 to 120 16
FAR 2006 Solar FAR 160 up to 10
Flamco Wemefa Prescor Solar safety valve
160 6 to 10
ICMA Art S120Art S121 160 6
ITAPdiaphragm safety relief valve 478
160 10
IVR IVR 443 160 6
Giacomini safety valve R140C 200 4
MFC MFC 3060-63 120 4 to 6
OR Sunshine 0480 160 10
Orkli Solar safety valve 160 3 to 10
Watts Industries SV-Sol 160 35 to 10
Shut-offball valves
Supplier Product Operating temperature [degC]
Barberi shut-off valve 140
IMT Armaturen Art 594 150
ITAP 365 S 160
IVR IVR 440441 180
MFC 3020-22 150
MFC 303032 150
OR Sunshine 0439 200
Sunex feed ball valve 160
Taconova Novazone Ball 110
TA Heimeier Globo S 150
TA Heimeier TA 500 TA 60 170 to 185
Tiemme Raccorderie
2330 SUN 180
Watts IndustriesKFE-Solar SK 20 Quickfill RIA 10 Sol
na
Three-way valves
Supplier Product Operating temperature [degC]
BELIMO Automation AG Lineg Hydronic Solutions
Solar valve EXT-SW-S 2
160
Esbe VTD300 100
FAR300729 Solar FAR (230 V) 2
130
FAR300829 Solar FAR (24 V) 2
na
Orkli Solar Solar zone valve 2 160
Tiemme Raccorderie
2134 SUN (24 and 230 V) 2
160
Watts Industries3-way zone valve 3131 2
100
The valves listed in the table have all been designed specifically for solar circuits The higher the temperature resistance the better Domestic mixing valves are indeed installed in the drinking water circuit But they also need a special quality factor for the use with solar systems because as higher temperatures are encountered in solar systems anti-scalding protection is significant for these valves 1 with anti-scalding protection 2 setting motor 3 anti-scalding protection 50 degC
Sun amp Wind Energy 12012
THE BESTTHE BESTTHE BESTTHE BESTTHE BESTSIMPLY
High exibility AISI 316L Material (14404) Long lifetime
FLEXIBLE METAL HOSE1
EPDM High temperature
2 INSULATION
Easy assembly without using any additional tool Long lifetime Gasket-free
FITTINGS4
infoayvazcom wwwayvazcom
Long Lifetime High Protection Anti-ozone Anti-UV Anti- ame
BRAIDING3
OF HIGH-QUALITY INSULATION
ilan_Simply_the_Bestindd 1 11042011 154541
Three-way valves
Photo Sferatec
Photo Orkli
Photo Tiemme
Photo Esbe
Photo Watts Industries
Photos (2) Belimo
from Italian manufacturers and by Watts Industries Watts Industries Germany which sells valves to sysshytem suppliers and as OEM products to industrial cusshytomers has brought the new flow meter ldquoFlowTurnrdquo onto the market Presented for the first time at Intersolar the new sensor measures flow rates and temperatures over a wider range than previous
Sun amp Wind Energy 1201258
Solar thermal market overview ndash valveS and expanSion veSSelS
temperature lies above the nominal zone temperashyture it is diverted to connection A
Another category of valves serves to ensure that the medium is able to flow unhindered along the chosen path air separators and vents (see table on page 59) which relieve potential blockages caused by air bubbles in the piping Air separators are installed where the most air accumulates namely at the highest point of a system In the case of a solar system that means on the roof Usually air venting is performed afshyter filling and then at regular maintenance intervals The system is then closed with a shutshyoff valve (see table on page 56) so that no solar fluid can evaporate at high temperatures The Dutch company Spirotech takes a different approach A roofshymounted air separashytor allows continuous venting and closes automaticalshyly if the temperature exceeds a defined threshold (see SampWE 92010 page 98) In many cases an air separashytor is also installed at the pump unit where it similarshyly provides for continuous venting
Poor air venting can lead to extensive damage to a solar system If air accumulates in the system the pump is no longer able to circulate the solar fluid At the same time the fluid itself will age to a greater exshytent and the system will be more likely to suffer corshyrosion From the scientific perspective there is still
A somewhat different design ndash the air separator from Polish manufacturer Sunex Photo Sunex
Air vents for solar systems from Italian manufacturer IVR Photo IVR
The Swiss company IMT has been supplying air separators (left) and fast air vents for solar systems for over 25 years Photo IMT
models Watts Industries hopes that this will help to enhance the efficiency of solar thermal systems
According to the manufacturer FlowTurn is able to measure flow rates up to 40 Lmin The product designers in Landau have additionally refined the sensors such that they now also re-turn exact measurements for very low flow rates below 1 Lmin
Sferatec has added a new electronically controlled valve for proportional and linear flow regulation into its portfolio The flow rate is ad-justed remotely by way of a ball valve with which it is possible to set the desired flow rate for a particular solar temperature The compa-ny believes this to be an essential trend more sensors for flow monitoring and control and thus for regulation of the overall solar system
Taking the right turn
Three-way control valves represent a new category in this yearrsquos SampWE overview Zone valves from six com-panies are compared in the table on page 56 Control valves for solar circuits must be capable of handling correspondingly higher temperatures The figures quoted by the manufacturers lie between 100 and 160 degC Belimo FAR Orkli Solar Tiemme and Watts Industries all make explicit mention of a motor con-troller for their three-way valves The zone valve VTD300 from Esbe is fitted with a thermostat for a particular zone temperature The valve reacts to the
inflowing fluid and changes the direction of the outflow accordingly
Zone valves with three outlets determine the con-nection to which the ther-mal medium is navigated Esbe explains the control
function of the three-way zone valve as follows the user sets the required zone temperatures
and if the temperature of the inflowing fluid lies below the
nominal temperature then it is diverted to connec-tion B Otherwise if the
Sferatec balancing valve Photos (2) Sferatec
The new FlowTurn sensor from Watts Industries incorporated into a solar pump unit
Balancing valve from Watts Industries Photos (2) Watts Industries
Solar combi-valve with flow sensor from Sferatec
Sun amp Wind Energy 12012 59
Supplier ProductMax operating temperature [degC]
Operating pressure [bar]
Features
AC-Fix 8001 series 180 10 na
Caleffi Solar
automatic air vent
200 10with shut-off valve
high-performance automatic air vent DiscalAir
200 10in combina-tion with air separator
FAR 2042 - SOLAR-FAR 160 10 na
Flamco Wemefa
Flexvent Top Solar
180 10with shut-off valve
Giacominiautomatic air vent R99S
150 10 na
ICMA spaArt S111 160 10 na
Art S110 130 10 na
IMT Armaturen
Elite Solar 125 S 150 05 to 10 na
Original Solar 180 4 na
Minival 121S 150 6 na
ITAP362S automatic air vent
160 10 na
IVR IVR 442 200 10 na
MFC Solar MFC 3000 200 10 na
OR Sunshine 0402 180 10 na
Orkli Solarautomatic air vent
150 6with shut-off valve
Spirotech bv Spirotop Solar 180 10without shut-off valve auto-close
TA Heimeier Zeparo ZUT Solar 160 10 na
Tiemme Raccorderie
1900 SUN auto-matic air vent
180 10with ballshut-off valve
Voss Entluumlftungs-Armaturen
automatic solar air vent PURG-O-MAT 150 ldquoHeatrdquo for heating circuit
150 10short-time 200 degC with ball valve
automatic float air vent PURG-INOX 2000
150 16
increased venting per-formance for large systems
Watts Industries
MV-Sol 160 12roof-mounted with ball valve
Air vents
Supplier ProductMax operating temperature [degC]
Operating pres-sure [bar]
Afriso-Euro-Index solar air separa-tor combination LKS
160 6
Barberi disaerator Y39 180 na
Barberi disaerator exten-sion Y3950A
180 na
Caleffi Solarmicrobubble separator Solar Discal
160 10
Flamco Wemefa Flamcovent Solar EcoPlus
200 10
IMT Armaturen air separator 124 110 6
ICMA Art S740 na na
Orkli Solar air separator 150 6
Reflex Winkelmann Reflex exair solar 180 10
Spirotech Spirovent Solar 180 10
TA Heimeier Zeparo ZUV 160 10
Watts Industries SER-MV 1 150 10
1 short time 200 degC
Air separators
Sun amp Wind Energy 1201260
Solar thermal market overview ndash valveS and expanSion veSSelS
C
M
Y
CM
MY
CY
CMY
K
210x297enpdf 1 2011-12-12 180710
Supplier Product Diaphragm Volume [L] Operating overpressure [bar]Load temperature of diaphragm [degC]
Accessories
Anton Eder Elko flex Solar na 18 to 300 6 70 1 na
Barberi Art 30D butyl 12 to 40 6 8 na na
Caleffi Solar solar expansion vessel butyl-based 12 to 40 10 110 na
Cimm solar rubber 12 to 600 10 100 na
Elbi spa (Sferatec)
series DSDSV SBR 2 to 500 8 10 99 thermostrip
series ASAC EPDM 5 to 24 8 99 replaceable diaphragm
series AFAFL EPDM 35 to 5000 8 10 99 replaceable diaphragm
Flamco Wemefa Solarix butyl 8 to 80 6 110 na
Global Water Solutions Solar Wave butyl 8 to 80 10 130 na
Ibaiondo
SMF na 5 to 24 10 130 na
SMR-P na 10 to 100 10 130 na
SMR na 200 to 700 10 130 na
ICMA spa Art S131 na na na 140 na
Orkli Solarexpansion vessel na 12 to 24 na 130 na
expansion vessel na 35 to 80 na 130 na
Oventrop diaphragm expansion vessel
na 18 to 80 na 70 na
PAW solar expansion vessel butyl 18 to 25 10 100 na
Reflex Winkelmann Reflex S butyl 2 to 600 10 70 na
TA Heimeier
Statico SD butyl 8 to 80 3 10 70 air-proof butyl bladder
Statico SE butyl 120 to 180 3 70 air-proof butyl bladder
Statico SU butyl 140 to 800 3 6 10 70 air-proof butyl bladder
Statico SG butyl1000 to
50006 10 70
air-proof butyl bladder replaceable diaphragm
Varem Solarvarem nitril 5 to 40 6 130 fixed diaphragm
Varem Solarvarem nitril 5 to 40 8 130 replaceable diaphragm
Solarvarem nitril 5 to 300 10 130 replaceable diaphragm
Watts Industries EG-Sol nitril 5 to 40 8 99 na
Zilmet Deutschland
Solarplus butyl-based 12 to 600 10 100 fixed diaphragm (half-shell)
Solarplus TM butyl-based 80 to 500 10 100 replaceable diaphragm
Zilflex Solar Plus Safe butyl-based 18 to 50 10 100integrated heat dissipation
vessel 6 to 15 L
Zilmet Deutschland SolarflexSBR divider diaphragm
12 to 150 6 to 10 70 na
Expansion vessels
1 up to 140 degC with heat dissipation vessel
Heat dissipation vessels
Supplier Product Volume [L]
Anton Eder EV heat dissipation vessel na
Elbi spa (Sferatec) VS-sol 5 to 50
Cimm pre-tank 12 to 24
Oventrop solar heat dissipation vessel 6 to 20
Varem heat dissipation vessel 18
Zilmet Deutschland heat dissipation vessel 5 to 200
Expansion vessel with bladder from Anton Eder Photo Anton Eder
Expansion vessels from Varem some of which feature a replaceable diaphragm Photo Varem
broad scope for optimisation with regard to the removal of air and other gases from solar sysshytems The technical solubility coefficients of various gases in solar fluids are yet to be invesshytigated and documented Determination of these coefficients a series of practical experishyments and the modelling of gas transport in soshylar systems are thus current topics for a reshysearch project at the Institute for Energy Techshynology of TU Dresden and the Laboratory of Nuclear Energy Systems at ETH Zurich The first results from tests performed with an indoor
system have already been presented With solar flushyids in contrast to water as the thermal medium there was apparently no or very little deaeration effect to be achieved with microbubble separators and air vents Influence on the level of gases in the fluid was rather to be attributed to degassing facilities For the case of largeshyscale systems therefore the scientists have framed the hypothesis that deaeration could even be left out altogether Testing under real outdoor condishytions began in June 2011 It remains to be seen whether this hypothesis will prove tenable
Katharina Ertmer
C
M
Y
CM
MY
CY
CMY
K
210x297enpdf 1 2011-12-12 180710
Sun amp Wind Energy 1201256
Solar thermal market overview ndash valveS and expanSion veSSelS
Regulating valves (for hydraulic balancing)
Supplier ProductMax operating temperature [degC]
Short-time temperature [degC]
Barberi 02D 28D 140 na
Barberi 31D 32D 140 na
Caleffi Solar SetCal Solar 130 na
Orkli Solar 110 na
Oventrop hydrocontrol STR 200 na
Sferatec solar combi valve 130 180
Taconova Tacosetter Bypass Solar 130185
185 195
Taconova Tacosetter Inline 100130
130 na
TA Heimeier STAD STAD-C 150 na
Watts Industries Watt FlowSol 160 na
Mixing valves
Supplier ProductMax operating
temperature [degC]Temperature setting
range [degC]
AC-fix 8005 series 100 30 to 65
AC-fix 8010 series 100 35 to 55
Barberi Art PO4PO5 110 30 to 65
Caleffi Solarthermostatic mixing valve
110 30 to 65
Caleffi Solarthermostatic mixing valve 1
100 35 to 55
Esbe Esbe Basic 35-60deg 2 90 35 to 60
Esbe Esbe Premium 48deg 2 90 48
Esbe thermostatic mixing valve
110 45 to 65
Esbe solar series VTS520S550
110 50 to 75
Esbe solar kit series VMC300 VMC500
95 35 to 60
Esbe solar kit series VMC500
95 45 to 65
FAR Rubinetteria SolarFAR 120 27 to 70
Giacomini thermostatic mixing valve R 156
85 38 to 60
ICMA spaArt S100-102 S107-109
100 30 to 60
ICMA spa Art S103 S112 85 20 to 65
ITAPthermostatic mixing valve 475
100 32 to 50
MFC Solar srl MFC 3070-3074 110 na
MUT RA solar series 85 30 to 60
Orkli Solar solar model 130 40 to 50
Orkli Solarhigh-temperature model
130 50 to 70
Oventrop Brawa-Mix 90 45 to 65
Oventrop Brawa-Mix 100 35 to 50
Taconova Novamix Standard 100 20 to 70
Taconova MT 53 Novamix Value
100 45 to 65
Taconova Novamix High Capacity
100 35 to 75
Taconova Novamix Compact 100 30 to 70
Tiemme Raccor-derie
4738 SUN 100 30 to 55
Gebr TuxhornTubra-Therm mixing valve
90 35 to 65
Watts Industries MMV-C MMV-Sol 3 110 30 to 65
Safety valves
Supplier ProductOperating temperature [degC]
Operating pressure [bar]
AC-fix 8004 series 160 10
Afriso-Euro-Index diaphragm safety relief valve
160 6
Barberi safety valve 160 3 to 10
Caleffi Solar safety valve 160 4 to 10
Esbe Series VSB 100300 95 to 120 16
FAR 2006 Solar FAR 160 up to 10
Flamco Wemefa Prescor Solar safety valve
160 6 to 10
ICMA Art S120Art S121 160 6
ITAPdiaphragm safety relief valve 478
160 10
IVR IVR 443 160 6
Giacomini safety valve R140C 200 4
MFC MFC 3060-63 120 4 to 6
OR Sunshine 0480 160 10
Orkli Solar safety valve 160 3 to 10
Watts Industries SV-Sol 160 35 to 10
Shut-offball valves
Supplier Product Operating temperature [degC]
Barberi shut-off valve 140
IMT Armaturen Art 594 150
ITAP 365 S 160
IVR IVR 440441 180
MFC 3020-22 150
MFC 303032 150
OR Sunshine 0439 200
Sunex feed ball valve 160
Taconova Novazone Ball 110
TA Heimeier Globo S 150
TA Heimeier TA 500 TA 60 170 to 185
Tiemme Raccorderie
2330 SUN 180
Watts IndustriesKFE-Solar SK 20 Quickfill RIA 10 Sol
na
Three-way valves
Supplier Product Operating temperature [degC]
BELIMO Automation AG Lineg Hydronic Solutions
Solar valve EXT-SW-S 2
160
Esbe VTD300 100
FAR300729 Solar FAR (230 V) 2
130
FAR300829 Solar FAR (24 V) 2
na
Orkli Solar Solar zone valve 2 160
Tiemme Raccorderie
2134 SUN (24 and 230 V) 2
160
Watts Industries3-way zone valve 3131 2
100
The valves listed in the table have all been designed specifically for solar circuits The higher the temperature resistance the better Domestic mixing valves are indeed installed in the drinking water circuit But they also need a special quality factor for the use with solar systems because as higher temperatures are encountered in solar systems anti-scalding protection is significant for these valves 1 with anti-scalding protection 2 setting motor 3 anti-scalding protection 50 degC
Sun amp Wind Energy 12012
THE BESTTHE BESTTHE BESTTHE BESTTHE BESTSIMPLY
High exibility AISI 316L Material (14404) Long lifetime
FLEXIBLE METAL HOSE1
EPDM High temperature
2 INSULATION
Easy assembly without using any additional tool Long lifetime Gasket-free
FITTINGS4
infoayvazcom wwwayvazcom
Long Lifetime High Protection Anti-ozone Anti-UV Anti- ame
BRAIDING3
OF HIGH-QUALITY INSULATION
ilan_Simply_the_Bestindd 1 11042011 154541
Three-way valves
Photo Sferatec
Photo Orkli
Photo Tiemme
Photo Esbe
Photo Watts Industries
Photos (2) Belimo
from Italian manufacturers and by Watts Industries Watts Industries Germany which sells valves to sysshytem suppliers and as OEM products to industrial cusshytomers has brought the new flow meter ldquoFlowTurnrdquo onto the market Presented for the first time at Intersolar the new sensor measures flow rates and temperatures over a wider range than previous
Sun amp Wind Energy 1201258
Solar thermal market overview ndash valveS and expanSion veSSelS
temperature lies above the nominal zone temperashyture it is diverted to connection A
Another category of valves serves to ensure that the medium is able to flow unhindered along the chosen path air separators and vents (see table on page 59) which relieve potential blockages caused by air bubbles in the piping Air separators are installed where the most air accumulates namely at the highest point of a system In the case of a solar system that means on the roof Usually air venting is performed afshyter filling and then at regular maintenance intervals The system is then closed with a shutshyoff valve (see table on page 56) so that no solar fluid can evaporate at high temperatures The Dutch company Spirotech takes a different approach A roofshymounted air separashytor allows continuous venting and closes automaticalshyly if the temperature exceeds a defined threshold (see SampWE 92010 page 98) In many cases an air separashytor is also installed at the pump unit where it similarshyly provides for continuous venting
Poor air venting can lead to extensive damage to a solar system If air accumulates in the system the pump is no longer able to circulate the solar fluid At the same time the fluid itself will age to a greater exshytent and the system will be more likely to suffer corshyrosion From the scientific perspective there is still
A somewhat different design ndash the air separator from Polish manufacturer Sunex Photo Sunex
Air vents for solar systems from Italian manufacturer IVR Photo IVR
The Swiss company IMT has been supplying air separators (left) and fast air vents for solar systems for over 25 years Photo IMT
models Watts Industries hopes that this will help to enhance the efficiency of solar thermal systems
According to the manufacturer FlowTurn is able to measure flow rates up to 40 Lmin The product designers in Landau have additionally refined the sensors such that they now also re-turn exact measurements for very low flow rates below 1 Lmin
Sferatec has added a new electronically controlled valve for proportional and linear flow regulation into its portfolio The flow rate is ad-justed remotely by way of a ball valve with which it is possible to set the desired flow rate for a particular solar temperature The compa-ny believes this to be an essential trend more sensors for flow monitoring and control and thus for regulation of the overall solar system
Taking the right turn
Three-way control valves represent a new category in this yearrsquos SampWE overview Zone valves from six com-panies are compared in the table on page 56 Control valves for solar circuits must be capable of handling correspondingly higher temperatures The figures quoted by the manufacturers lie between 100 and 160 degC Belimo FAR Orkli Solar Tiemme and Watts Industries all make explicit mention of a motor con-troller for their three-way valves The zone valve VTD300 from Esbe is fitted with a thermostat for a particular zone temperature The valve reacts to the
inflowing fluid and changes the direction of the outflow accordingly
Zone valves with three outlets determine the con-nection to which the ther-mal medium is navigated Esbe explains the control
function of the three-way zone valve as follows the user sets the required zone temperatures
and if the temperature of the inflowing fluid lies below the
nominal temperature then it is diverted to connec-tion B Otherwise if the
Sferatec balancing valve Photos (2) Sferatec
The new FlowTurn sensor from Watts Industries incorporated into a solar pump unit
Balancing valve from Watts Industries Photos (2) Watts Industries
Solar combi-valve with flow sensor from Sferatec
Sun amp Wind Energy 12012 59
Supplier ProductMax operating temperature [degC]
Operating pressure [bar]
Features
AC-Fix 8001 series 180 10 na
Caleffi Solar
automatic air vent
200 10with shut-off valve
high-performance automatic air vent DiscalAir
200 10in combina-tion with air separator
FAR 2042 - SOLAR-FAR 160 10 na
Flamco Wemefa
Flexvent Top Solar
180 10with shut-off valve
Giacominiautomatic air vent R99S
150 10 na
ICMA spaArt S111 160 10 na
Art S110 130 10 na
IMT Armaturen
Elite Solar 125 S 150 05 to 10 na
Original Solar 180 4 na
Minival 121S 150 6 na
ITAP362S automatic air vent
160 10 na
IVR IVR 442 200 10 na
MFC Solar MFC 3000 200 10 na
OR Sunshine 0402 180 10 na
Orkli Solarautomatic air vent
150 6with shut-off valve
Spirotech bv Spirotop Solar 180 10without shut-off valve auto-close
TA Heimeier Zeparo ZUT Solar 160 10 na
Tiemme Raccorderie
1900 SUN auto-matic air vent
180 10with ballshut-off valve
Voss Entluumlftungs-Armaturen
automatic solar air vent PURG-O-MAT 150 ldquoHeatrdquo for heating circuit
150 10short-time 200 degC with ball valve
automatic float air vent PURG-INOX 2000
150 16
increased venting per-formance for large systems
Watts Industries
MV-Sol 160 12roof-mounted with ball valve
Air vents
Supplier ProductMax operating temperature [degC]
Operating pres-sure [bar]
Afriso-Euro-Index solar air separa-tor combination LKS
160 6
Barberi disaerator Y39 180 na
Barberi disaerator exten-sion Y3950A
180 na
Caleffi Solarmicrobubble separator Solar Discal
160 10
Flamco Wemefa Flamcovent Solar EcoPlus
200 10
IMT Armaturen air separator 124 110 6
ICMA Art S740 na na
Orkli Solar air separator 150 6
Reflex Winkelmann Reflex exair solar 180 10
Spirotech Spirovent Solar 180 10
TA Heimeier Zeparo ZUV 160 10
Watts Industries SER-MV 1 150 10
1 short time 200 degC
Air separators
Sun amp Wind Energy 1201260
Solar thermal market overview ndash valveS and expanSion veSSelS
C
M
Y
CM
MY
CY
CMY
K
210x297enpdf 1 2011-12-12 180710
Supplier Product Diaphragm Volume [L] Operating overpressure [bar]Load temperature of diaphragm [degC]
Accessories
Anton Eder Elko flex Solar na 18 to 300 6 70 1 na
Barberi Art 30D butyl 12 to 40 6 8 na na
Caleffi Solar solar expansion vessel butyl-based 12 to 40 10 110 na
Cimm solar rubber 12 to 600 10 100 na
Elbi spa (Sferatec)
series DSDSV SBR 2 to 500 8 10 99 thermostrip
series ASAC EPDM 5 to 24 8 99 replaceable diaphragm
series AFAFL EPDM 35 to 5000 8 10 99 replaceable diaphragm
Flamco Wemefa Solarix butyl 8 to 80 6 110 na
Global Water Solutions Solar Wave butyl 8 to 80 10 130 na
Ibaiondo
SMF na 5 to 24 10 130 na
SMR-P na 10 to 100 10 130 na
SMR na 200 to 700 10 130 na
ICMA spa Art S131 na na na 140 na
Orkli Solarexpansion vessel na 12 to 24 na 130 na
expansion vessel na 35 to 80 na 130 na
Oventrop diaphragm expansion vessel
na 18 to 80 na 70 na
PAW solar expansion vessel butyl 18 to 25 10 100 na
Reflex Winkelmann Reflex S butyl 2 to 600 10 70 na
TA Heimeier
Statico SD butyl 8 to 80 3 10 70 air-proof butyl bladder
Statico SE butyl 120 to 180 3 70 air-proof butyl bladder
Statico SU butyl 140 to 800 3 6 10 70 air-proof butyl bladder
Statico SG butyl1000 to
50006 10 70
air-proof butyl bladder replaceable diaphragm
Varem Solarvarem nitril 5 to 40 6 130 fixed diaphragm
Varem Solarvarem nitril 5 to 40 8 130 replaceable diaphragm
Solarvarem nitril 5 to 300 10 130 replaceable diaphragm
Watts Industries EG-Sol nitril 5 to 40 8 99 na
Zilmet Deutschland
Solarplus butyl-based 12 to 600 10 100 fixed diaphragm (half-shell)
Solarplus TM butyl-based 80 to 500 10 100 replaceable diaphragm
Zilflex Solar Plus Safe butyl-based 18 to 50 10 100integrated heat dissipation
vessel 6 to 15 L
Zilmet Deutschland SolarflexSBR divider diaphragm
12 to 150 6 to 10 70 na
Expansion vessels
1 up to 140 degC with heat dissipation vessel
Heat dissipation vessels
Supplier Product Volume [L]
Anton Eder EV heat dissipation vessel na
Elbi spa (Sferatec) VS-sol 5 to 50
Cimm pre-tank 12 to 24
Oventrop solar heat dissipation vessel 6 to 20
Varem heat dissipation vessel 18
Zilmet Deutschland heat dissipation vessel 5 to 200
Expansion vessel with bladder from Anton Eder Photo Anton Eder
Expansion vessels from Varem some of which feature a replaceable diaphragm Photo Varem
broad scope for optimisation with regard to the removal of air and other gases from solar sysshytems The technical solubility coefficients of various gases in solar fluids are yet to be invesshytigated and documented Determination of these coefficients a series of practical experishyments and the modelling of gas transport in soshylar systems are thus current topics for a reshysearch project at the Institute for Energy Techshynology of TU Dresden and the Laboratory of Nuclear Energy Systems at ETH Zurich The first results from tests performed with an indoor
system have already been presented With solar flushyids in contrast to water as the thermal medium there was apparently no or very little deaeration effect to be achieved with microbubble separators and air vents Influence on the level of gases in the fluid was rather to be attributed to degassing facilities For the case of largeshyscale systems therefore the scientists have framed the hypothesis that deaeration could even be left out altogether Testing under real outdoor condishytions began in June 2011 It remains to be seen whether this hypothesis will prove tenable
Katharina Ertmer
C
M
Y
CM
MY
CY
CMY
K
210x297enpdf 1 2011-12-12 180710
Sun amp Wind Energy 12012
THE BESTTHE BESTTHE BESTTHE BESTTHE BESTSIMPLY
High exibility AISI 316L Material (14404) Long lifetime
FLEXIBLE METAL HOSE1
EPDM High temperature
2 INSULATION
Easy assembly without using any additional tool Long lifetime Gasket-free
FITTINGS4
infoayvazcom wwwayvazcom
Long Lifetime High Protection Anti-ozone Anti-UV Anti- ame
BRAIDING3
OF HIGH-QUALITY INSULATION
ilan_Simply_the_Bestindd 1 11042011 154541
Three-way valves
Photo Sferatec
Photo Orkli
Photo Tiemme
Photo Esbe
Photo Watts Industries
Photos (2) Belimo
from Italian manufacturers and by Watts Industries Watts Industries Germany which sells valves to sysshytem suppliers and as OEM products to industrial cusshytomers has brought the new flow meter ldquoFlowTurnrdquo onto the market Presented for the first time at Intersolar the new sensor measures flow rates and temperatures over a wider range than previous
Sun amp Wind Energy 1201258
Solar thermal market overview ndash valveS and expanSion veSSelS
temperature lies above the nominal zone temperashyture it is diverted to connection A
Another category of valves serves to ensure that the medium is able to flow unhindered along the chosen path air separators and vents (see table on page 59) which relieve potential blockages caused by air bubbles in the piping Air separators are installed where the most air accumulates namely at the highest point of a system In the case of a solar system that means on the roof Usually air venting is performed afshyter filling and then at regular maintenance intervals The system is then closed with a shutshyoff valve (see table on page 56) so that no solar fluid can evaporate at high temperatures The Dutch company Spirotech takes a different approach A roofshymounted air separashytor allows continuous venting and closes automaticalshyly if the temperature exceeds a defined threshold (see SampWE 92010 page 98) In many cases an air separashytor is also installed at the pump unit where it similarshyly provides for continuous venting
Poor air venting can lead to extensive damage to a solar system If air accumulates in the system the pump is no longer able to circulate the solar fluid At the same time the fluid itself will age to a greater exshytent and the system will be more likely to suffer corshyrosion From the scientific perspective there is still
A somewhat different design ndash the air separator from Polish manufacturer Sunex Photo Sunex
Air vents for solar systems from Italian manufacturer IVR Photo IVR
The Swiss company IMT has been supplying air separators (left) and fast air vents for solar systems for over 25 years Photo IMT
models Watts Industries hopes that this will help to enhance the efficiency of solar thermal systems
According to the manufacturer FlowTurn is able to measure flow rates up to 40 Lmin The product designers in Landau have additionally refined the sensors such that they now also re-turn exact measurements for very low flow rates below 1 Lmin
Sferatec has added a new electronically controlled valve for proportional and linear flow regulation into its portfolio The flow rate is ad-justed remotely by way of a ball valve with which it is possible to set the desired flow rate for a particular solar temperature The compa-ny believes this to be an essential trend more sensors for flow monitoring and control and thus for regulation of the overall solar system
Taking the right turn
Three-way control valves represent a new category in this yearrsquos SampWE overview Zone valves from six com-panies are compared in the table on page 56 Control valves for solar circuits must be capable of handling correspondingly higher temperatures The figures quoted by the manufacturers lie between 100 and 160 degC Belimo FAR Orkli Solar Tiemme and Watts Industries all make explicit mention of a motor con-troller for their three-way valves The zone valve VTD300 from Esbe is fitted with a thermostat for a particular zone temperature The valve reacts to the
inflowing fluid and changes the direction of the outflow accordingly
Zone valves with three outlets determine the con-nection to which the ther-mal medium is navigated Esbe explains the control
function of the three-way zone valve as follows the user sets the required zone temperatures
and if the temperature of the inflowing fluid lies below the
nominal temperature then it is diverted to connec-tion B Otherwise if the
Sferatec balancing valve Photos (2) Sferatec
The new FlowTurn sensor from Watts Industries incorporated into a solar pump unit
Balancing valve from Watts Industries Photos (2) Watts Industries
Solar combi-valve with flow sensor from Sferatec
Sun amp Wind Energy 12012 59
Supplier ProductMax operating temperature [degC]
Operating pressure [bar]
Features
AC-Fix 8001 series 180 10 na
Caleffi Solar
automatic air vent
200 10with shut-off valve
high-performance automatic air vent DiscalAir
200 10in combina-tion with air separator
FAR 2042 - SOLAR-FAR 160 10 na
Flamco Wemefa
Flexvent Top Solar
180 10with shut-off valve
Giacominiautomatic air vent R99S
150 10 na
ICMA spaArt S111 160 10 na
Art S110 130 10 na
IMT Armaturen
Elite Solar 125 S 150 05 to 10 na
Original Solar 180 4 na
Minival 121S 150 6 na
ITAP362S automatic air vent
160 10 na
IVR IVR 442 200 10 na
MFC Solar MFC 3000 200 10 na
OR Sunshine 0402 180 10 na
Orkli Solarautomatic air vent
150 6with shut-off valve
Spirotech bv Spirotop Solar 180 10without shut-off valve auto-close
TA Heimeier Zeparo ZUT Solar 160 10 na
Tiemme Raccorderie
1900 SUN auto-matic air vent
180 10with ballshut-off valve
Voss Entluumlftungs-Armaturen
automatic solar air vent PURG-O-MAT 150 ldquoHeatrdquo for heating circuit
150 10short-time 200 degC with ball valve
automatic float air vent PURG-INOX 2000
150 16
increased venting per-formance for large systems
Watts Industries
MV-Sol 160 12roof-mounted with ball valve
Air vents
Supplier ProductMax operating temperature [degC]
Operating pres-sure [bar]
Afriso-Euro-Index solar air separa-tor combination LKS
160 6
Barberi disaerator Y39 180 na
Barberi disaerator exten-sion Y3950A
180 na
Caleffi Solarmicrobubble separator Solar Discal
160 10
Flamco Wemefa Flamcovent Solar EcoPlus
200 10
IMT Armaturen air separator 124 110 6
ICMA Art S740 na na
Orkli Solar air separator 150 6
Reflex Winkelmann Reflex exair solar 180 10
Spirotech Spirovent Solar 180 10
TA Heimeier Zeparo ZUV 160 10
Watts Industries SER-MV 1 150 10
1 short time 200 degC
Air separators
Sun amp Wind Energy 1201260
Solar thermal market overview ndash valveS and expanSion veSSelS
C
M
Y
CM
MY
CY
CMY
K
210x297enpdf 1 2011-12-12 180710
Supplier Product Diaphragm Volume [L] Operating overpressure [bar]Load temperature of diaphragm [degC]
Accessories
Anton Eder Elko flex Solar na 18 to 300 6 70 1 na
Barberi Art 30D butyl 12 to 40 6 8 na na
Caleffi Solar solar expansion vessel butyl-based 12 to 40 10 110 na
Cimm solar rubber 12 to 600 10 100 na
Elbi spa (Sferatec)
series DSDSV SBR 2 to 500 8 10 99 thermostrip
series ASAC EPDM 5 to 24 8 99 replaceable diaphragm
series AFAFL EPDM 35 to 5000 8 10 99 replaceable diaphragm
Flamco Wemefa Solarix butyl 8 to 80 6 110 na
Global Water Solutions Solar Wave butyl 8 to 80 10 130 na
Ibaiondo
SMF na 5 to 24 10 130 na
SMR-P na 10 to 100 10 130 na
SMR na 200 to 700 10 130 na
ICMA spa Art S131 na na na 140 na
Orkli Solarexpansion vessel na 12 to 24 na 130 na
expansion vessel na 35 to 80 na 130 na
Oventrop diaphragm expansion vessel
na 18 to 80 na 70 na
PAW solar expansion vessel butyl 18 to 25 10 100 na
Reflex Winkelmann Reflex S butyl 2 to 600 10 70 na
TA Heimeier
Statico SD butyl 8 to 80 3 10 70 air-proof butyl bladder
Statico SE butyl 120 to 180 3 70 air-proof butyl bladder
Statico SU butyl 140 to 800 3 6 10 70 air-proof butyl bladder
Statico SG butyl1000 to
50006 10 70
air-proof butyl bladder replaceable diaphragm
Varem Solarvarem nitril 5 to 40 6 130 fixed diaphragm
Varem Solarvarem nitril 5 to 40 8 130 replaceable diaphragm
Solarvarem nitril 5 to 300 10 130 replaceable diaphragm
Watts Industries EG-Sol nitril 5 to 40 8 99 na
Zilmet Deutschland
Solarplus butyl-based 12 to 600 10 100 fixed diaphragm (half-shell)
Solarplus TM butyl-based 80 to 500 10 100 replaceable diaphragm
Zilflex Solar Plus Safe butyl-based 18 to 50 10 100integrated heat dissipation
vessel 6 to 15 L
Zilmet Deutschland SolarflexSBR divider diaphragm
12 to 150 6 to 10 70 na
Expansion vessels
1 up to 140 degC with heat dissipation vessel
Heat dissipation vessels
Supplier Product Volume [L]
Anton Eder EV heat dissipation vessel na
Elbi spa (Sferatec) VS-sol 5 to 50
Cimm pre-tank 12 to 24
Oventrop solar heat dissipation vessel 6 to 20
Varem heat dissipation vessel 18
Zilmet Deutschland heat dissipation vessel 5 to 200
Expansion vessel with bladder from Anton Eder Photo Anton Eder
Expansion vessels from Varem some of which feature a replaceable diaphragm Photo Varem
broad scope for optimisation with regard to the removal of air and other gases from solar sysshytems The technical solubility coefficients of various gases in solar fluids are yet to be invesshytigated and documented Determination of these coefficients a series of practical experishyments and the modelling of gas transport in soshylar systems are thus current topics for a reshysearch project at the Institute for Energy Techshynology of TU Dresden and the Laboratory of Nuclear Energy Systems at ETH Zurich The first results from tests performed with an indoor
system have already been presented With solar flushyids in contrast to water as the thermal medium there was apparently no or very little deaeration effect to be achieved with microbubble separators and air vents Influence on the level of gases in the fluid was rather to be attributed to degassing facilities For the case of largeshyscale systems therefore the scientists have framed the hypothesis that deaeration could even be left out altogether Testing under real outdoor condishytions began in June 2011 It remains to be seen whether this hypothesis will prove tenable
Katharina Ertmer
C
M
Y
CM
MY
CY
CMY
K
210x297enpdf 1 2011-12-12 180710
Sun amp Wind Energy 1201258
Solar thermal market overview ndash valveS and expanSion veSSelS
temperature lies above the nominal zone temperashyture it is diverted to connection A
Another category of valves serves to ensure that the medium is able to flow unhindered along the chosen path air separators and vents (see table on page 59) which relieve potential blockages caused by air bubbles in the piping Air separators are installed where the most air accumulates namely at the highest point of a system In the case of a solar system that means on the roof Usually air venting is performed afshyter filling and then at regular maintenance intervals The system is then closed with a shutshyoff valve (see table on page 56) so that no solar fluid can evaporate at high temperatures The Dutch company Spirotech takes a different approach A roofshymounted air separashytor allows continuous venting and closes automaticalshyly if the temperature exceeds a defined threshold (see SampWE 92010 page 98) In many cases an air separashytor is also installed at the pump unit where it similarshyly provides for continuous venting
Poor air venting can lead to extensive damage to a solar system If air accumulates in the system the pump is no longer able to circulate the solar fluid At the same time the fluid itself will age to a greater exshytent and the system will be more likely to suffer corshyrosion From the scientific perspective there is still
A somewhat different design ndash the air separator from Polish manufacturer Sunex Photo Sunex
Air vents for solar systems from Italian manufacturer IVR Photo IVR
The Swiss company IMT has been supplying air separators (left) and fast air vents for solar systems for over 25 years Photo IMT
models Watts Industries hopes that this will help to enhance the efficiency of solar thermal systems
According to the manufacturer FlowTurn is able to measure flow rates up to 40 Lmin The product designers in Landau have additionally refined the sensors such that they now also re-turn exact measurements for very low flow rates below 1 Lmin
Sferatec has added a new electronically controlled valve for proportional and linear flow regulation into its portfolio The flow rate is ad-justed remotely by way of a ball valve with which it is possible to set the desired flow rate for a particular solar temperature The compa-ny believes this to be an essential trend more sensors for flow monitoring and control and thus for regulation of the overall solar system
Taking the right turn
Three-way control valves represent a new category in this yearrsquos SampWE overview Zone valves from six com-panies are compared in the table on page 56 Control valves for solar circuits must be capable of handling correspondingly higher temperatures The figures quoted by the manufacturers lie between 100 and 160 degC Belimo FAR Orkli Solar Tiemme and Watts Industries all make explicit mention of a motor con-troller for their three-way valves The zone valve VTD300 from Esbe is fitted with a thermostat for a particular zone temperature The valve reacts to the
inflowing fluid and changes the direction of the outflow accordingly
Zone valves with three outlets determine the con-nection to which the ther-mal medium is navigated Esbe explains the control
function of the three-way zone valve as follows the user sets the required zone temperatures
and if the temperature of the inflowing fluid lies below the
nominal temperature then it is diverted to connec-tion B Otherwise if the
Sferatec balancing valve Photos (2) Sferatec
The new FlowTurn sensor from Watts Industries incorporated into a solar pump unit
Balancing valve from Watts Industries Photos (2) Watts Industries
Solar combi-valve with flow sensor from Sferatec
Sun amp Wind Energy 12012 59
Supplier ProductMax operating temperature [degC]
Operating pressure [bar]
Features
AC-Fix 8001 series 180 10 na
Caleffi Solar
automatic air vent
200 10with shut-off valve
high-performance automatic air vent DiscalAir
200 10in combina-tion with air separator
FAR 2042 - SOLAR-FAR 160 10 na
Flamco Wemefa
Flexvent Top Solar
180 10with shut-off valve
Giacominiautomatic air vent R99S
150 10 na
ICMA spaArt S111 160 10 na
Art S110 130 10 na
IMT Armaturen
Elite Solar 125 S 150 05 to 10 na
Original Solar 180 4 na
Minival 121S 150 6 na
ITAP362S automatic air vent
160 10 na
IVR IVR 442 200 10 na
MFC Solar MFC 3000 200 10 na
OR Sunshine 0402 180 10 na
Orkli Solarautomatic air vent
150 6with shut-off valve
Spirotech bv Spirotop Solar 180 10without shut-off valve auto-close
TA Heimeier Zeparo ZUT Solar 160 10 na
Tiemme Raccorderie
1900 SUN auto-matic air vent
180 10with ballshut-off valve
Voss Entluumlftungs-Armaturen
automatic solar air vent PURG-O-MAT 150 ldquoHeatrdquo for heating circuit
150 10short-time 200 degC with ball valve
automatic float air vent PURG-INOX 2000
150 16
increased venting per-formance for large systems
Watts Industries
MV-Sol 160 12roof-mounted with ball valve
Air vents
Supplier ProductMax operating temperature [degC]
Operating pres-sure [bar]
Afriso-Euro-Index solar air separa-tor combination LKS
160 6
Barberi disaerator Y39 180 na
Barberi disaerator exten-sion Y3950A
180 na
Caleffi Solarmicrobubble separator Solar Discal
160 10
Flamco Wemefa Flamcovent Solar EcoPlus
200 10
IMT Armaturen air separator 124 110 6
ICMA Art S740 na na
Orkli Solar air separator 150 6
Reflex Winkelmann Reflex exair solar 180 10
Spirotech Spirovent Solar 180 10
TA Heimeier Zeparo ZUV 160 10
Watts Industries SER-MV 1 150 10
1 short time 200 degC
Air separators
Sun amp Wind Energy 1201260
Solar thermal market overview ndash valveS and expanSion veSSelS
C
M
Y
CM
MY
CY
CMY
K
210x297enpdf 1 2011-12-12 180710
Supplier Product Diaphragm Volume [L] Operating overpressure [bar]Load temperature of diaphragm [degC]
Accessories
Anton Eder Elko flex Solar na 18 to 300 6 70 1 na
Barberi Art 30D butyl 12 to 40 6 8 na na
Caleffi Solar solar expansion vessel butyl-based 12 to 40 10 110 na
Cimm solar rubber 12 to 600 10 100 na
Elbi spa (Sferatec)
series DSDSV SBR 2 to 500 8 10 99 thermostrip
series ASAC EPDM 5 to 24 8 99 replaceable diaphragm
series AFAFL EPDM 35 to 5000 8 10 99 replaceable diaphragm
Flamco Wemefa Solarix butyl 8 to 80 6 110 na
Global Water Solutions Solar Wave butyl 8 to 80 10 130 na
Ibaiondo
SMF na 5 to 24 10 130 na
SMR-P na 10 to 100 10 130 na
SMR na 200 to 700 10 130 na
ICMA spa Art S131 na na na 140 na
Orkli Solarexpansion vessel na 12 to 24 na 130 na
expansion vessel na 35 to 80 na 130 na
Oventrop diaphragm expansion vessel
na 18 to 80 na 70 na
PAW solar expansion vessel butyl 18 to 25 10 100 na
Reflex Winkelmann Reflex S butyl 2 to 600 10 70 na
TA Heimeier
Statico SD butyl 8 to 80 3 10 70 air-proof butyl bladder
Statico SE butyl 120 to 180 3 70 air-proof butyl bladder
Statico SU butyl 140 to 800 3 6 10 70 air-proof butyl bladder
Statico SG butyl1000 to
50006 10 70
air-proof butyl bladder replaceable diaphragm
Varem Solarvarem nitril 5 to 40 6 130 fixed diaphragm
Varem Solarvarem nitril 5 to 40 8 130 replaceable diaphragm
Solarvarem nitril 5 to 300 10 130 replaceable diaphragm
Watts Industries EG-Sol nitril 5 to 40 8 99 na
Zilmet Deutschland
Solarplus butyl-based 12 to 600 10 100 fixed diaphragm (half-shell)
Solarplus TM butyl-based 80 to 500 10 100 replaceable diaphragm
Zilflex Solar Plus Safe butyl-based 18 to 50 10 100integrated heat dissipation
vessel 6 to 15 L
Zilmet Deutschland SolarflexSBR divider diaphragm
12 to 150 6 to 10 70 na
Expansion vessels
1 up to 140 degC with heat dissipation vessel
Heat dissipation vessels
Supplier Product Volume [L]
Anton Eder EV heat dissipation vessel na
Elbi spa (Sferatec) VS-sol 5 to 50
Cimm pre-tank 12 to 24
Oventrop solar heat dissipation vessel 6 to 20
Varem heat dissipation vessel 18
Zilmet Deutschland heat dissipation vessel 5 to 200
Expansion vessel with bladder from Anton Eder Photo Anton Eder
Expansion vessels from Varem some of which feature a replaceable diaphragm Photo Varem
broad scope for optimisation with regard to the removal of air and other gases from solar sysshytems The technical solubility coefficients of various gases in solar fluids are yet to be invesshytigated and documented Determination of these coefficients a series of practical experishyments and the modelling of gas transport in soshylar systems are thus current topics for a reshysearch project at the Institute for Energy Techshynology of TU Dresden and the Laboratory of Nuclear Energy Systems at ETH Zurich The first results from tests performed with an indoor
system have already been presented With solar flushyids in contrast to water as the thermal medium there was apparently no or very little deaeration effect to be achieved with microbubble separators and air vents Influence on the level of gases in the fluid was rather to be attributed to degassing facilities For the case of largeshyscale systems therefore the scientists have framed the hypothesis that deaeration could even be left out altogether Testing under real outdoor condishytions began in June 2011 It remains to be seen whether this hypothesis will prove tenable
Katharina Ertmer
C
M
Y
CM
MY
CY
CMY
K
210x297enpdf 1 2011-12-12 180710
Sun amp Wind Energy 12012 59
Supplier ProductMax operating temperature [degC]
Operating pressure [bar]
Features
AC-Fix 8001 series 180 10 na
Caleffi Solar
automatic air vent
200 10with shut-off valve
high-performance automatic air vent DiscalAir
200 10in combina-tion with air separator
FAR 2042 - SOLAR-FAR 160 10 na
Flamco Wemefa
Flexvent Top Solar
180 10with shut-off valve
Giacominiautomatic air vent R99S
150 10 na
ICMA spaArt S111 160 10 na
Art S110 130 10 na
IMT Armaturen
Elite Solar 125 S 150 05 to 10 na
Original Solar 180 4 na
Minival 121S 150 6 na
ITAP362S automatic air vent
160 10 na
IVR IVR 442 200 10 na
MFC Solar MFC 3000 200 10 na
OR Sunshine 0402 180 10 na
Orkli Solarautomatic air vent
150 6with shut-off valve
Spirotech bv Spirotop Solar 180 10without shut-off valve auto-close
TA Heimeier Zeparo ZUT Solar 160 10 na
Tiemme Raccorderie
1900 SUN auto-matic air vent
180 10with ballshut-off valve
Voss Entluumlftungs-Armaturen
automatic solar air vent PURG-O-MAT 150 ldquoHeatrdquo for heating circuit
150 10short-time 200 degC with ball valve
automatic float air vent PURG-INOX 2000
150 16
increased venting per-formance for large systems
Watts Industries
MV-Sol 160 12roof-mounted with ball valve
Air vents
Supplier ProductMax operating temperature [degC]
Operating pres-sure [bar]
Afriso-Euro-Index solar air separa-tor combination LKS
160 6
Barberi disaerator Y39 180 na
Barberi disaerator exten-sion Y3950A
180 na
Caleffi Solarmicrobubble separator Solar Discal
160 10
Flamco Wemefa Flamcovent Solar EcoPlus
200 10
IMT Armaturen air separator 124 110 6
ICMA Art S740 na na
Orkli Solar air separator 150 6
Reflex Winkelmann Reflex exair solar 180 10
Spirotech Spirovent Solar 180 10
TA Heimeier Zeparo ZUV 160 10
Watts Industries SER-MV 1 150 10
1 short time 200 degC
Air separators
Sun amp Wind Energy 1201260
Solar thermal market overview ndash valveS and expanSion veSSelS
C
M
Y
CM
MY
CY
CMY
K
210x297enpdf 1 2011-12-12 180710
Supplier Product Diaphragm Volume [L] Operating overpressure [bar]Load temperature of diaphragm [degC]
Accessories
Anton Eder Elko flex Solar na 18 to 300 6 70 1 na
Barberi Art 30D butyl 12 to 40 6 8 na na
Caleffi Solar solar expansion vessel butyl-based 12 to 40 10 110 na
Cimm solar rubber 12 to 600 10 100 na
Elbi spa (Sferatec)
series DSDSV SBR 2 to 500 8 10 99 thermostrip
series ASAC EPDM 5 to 24 8 99 replaceable diaphragm
series AFAFL EPDM 35 to 5000 8 10 99 replaceable diaphragm
Flamco Wemefa Solarix butyl 8 to 80 6 110 na
Global Water Solutions Solar Wave butyl 8 to 80 10 130 na
Ibaiondo
SMF na 5 to 24 10 130 na
SMR-P na 10 to 100 10 130 na
SMR na 200 to 700 10 130 na
ICMA spa Art S131 na na na 140 na
Orkli Solarexpansion vessel na 12 to 24 na 130 na
expansion vessel na 35 to 80 na 130 na
Oventrop diaphragm expansion vessel
na 18 to 80 na 70 na
PAW solar expansion vessel butyl 18 to 25 10 100 na
Reflex Winkelmann Reflex S butyl 2 to 600 10 70 na
TA Heimeier
Statico SD butyl 8 to 80 3 10 70 air-proof butyl bladder
Statico SE butyl 120 to 180 3 70 air-proof butyl bladder
Statico SU butyl 140 to 800 3 6 10 70 air-proof butyl bladder
Statico SG butyl1000 to
50006 10 70
air-proof butyl bladder replaceable diaphragm
Varem Solarvarem nitril 5 to 40 6 130 fixed diaphragm
Varem Solarvarem nitril 5 to 40 8 130 replaceable diaphragm
Solarvarem nitril 5 to 300 10 130 replaceable diaphragm
Watts Industries EG-Sol nitril 5 to 40 8 99 na
Zilmet Deutschland
Solarplus butyl-based 12 to 600 10 100 fixed diaphragm (half-shell)
Solarplus TM butyl-based 80 to 500 10 100 replaceable diaphragm
Zilflex Solar Plus Safe butyl-based 18 to 50 10 100integrated heat dissipation
vessel 6 to 15 L
Zilmet Deutschland SolarflexSBR divider diaphragm
12 to 150 6 to 10 70 na
Expansion vessels
1 up to 140 degC with heat dissipation vessel
Heat dissipation vessels
Supplier Product Volume [L]
Anton Eder EV heat dissipation vessel na
Elbi spa (Sferatec) VS-sol 5 to 50
Cimm pre-tank 12 to 24
Oventrop solar heat dissipation vessel 6 to 20
Varem heat dissipation vessel 18
Zilmet Deutschland heat dissipation vessel 5 to 200
Expansion vessel with bladder from Anton Eder Photo Anton Eder
Expansion vessels from Varem some of which feature a replaceable diaphragm Photo Varem
broad scope for optimisation with regard to the removal of air and other gases from solar sysshytems The technical solubility coefficients of various gases in solar fluids are yet to be invesshytigated and documented Determination of these coefficients a series of practical experishyments and the modelling of gas transport in soshylar systems are thus current topics for a reshysearch project at the Institute for Energy Techshynology of TU Dresden and the Laboratory of Nuclear Energy Systems at ETH Zurich The first results from tests performed with an indoor
system have already been presented With solar flushyids in contrast to water as the thermal medium there was apparently no or very little deaeration effect to be achieved with microbubble separators and air vents Influence on the level of gases in the fluid was rather to be attributed to degassing facilities For the case of largeshyscale systems therefore the scientists have framed the hypothesis that deaeration could even be left out altogether Testing under real outdoor condishytions began in June 2011 It remains to be seen whether this hypothesis will prove tenable
Katharina Ertmer
C
M
Y
CM
MY
CY
CMY
K
210x297enpdf 1 2011-12-12 180710
Sun amp Wind Energy 1201260
Solar thermal market overview ndash valveS and expanSion veSSelS
C
M
Y
CM
MY
CY
CMY
K
210x297enpdf 1 2011-12-12 180710
Supplier Product Diaphragm Volume [L] Operating overpressure [bar]Load temperature of diaphragm [degC]
Accessories
Anton Eder Elko flex Solar na 18 to 300 6 70 1 na
Barberi Art 30D butyl 12 to 40 6 8 na na
Caleffi Solar solar expansion vessel butyl-based 12 to 40 10 110 na
Cimm solar rubber 12 to 600 10 100 na
Elbi spa (Sferatec)
series DSDSV SBR 2 to 500 8 10 99 thermostrip
series ASAC EPDM 5 to 24 8 99 replaceable diaphragm
series AFAFL EPDM 35 to 5000 8 10 99 replaceable diaphragm
Flamco Wemefa Solarix butyl 8 to 80 6 110 na
Global Water Solutions Solar Wave butyl 8 to 80 10 130 na
Ibaiondo
SMF na 5 to 24 10 130 na
SMR-P na 10 to 100 10 130 na
SMR na 200 to 700 10 130 na
ICMA spa Art S131 na na na 140 na
Orkli Solarexpansion vessel na 12 to 24 na 130 na
expansion vessel na 35 to 80 na 130 na
Oventrop diaphragm expansion vessel
na 18 to 80 na 70 na
PAW solar expansion vessel butyl 18 to 25 10 100 na
Reflex Winkelmann Reflex S butyl 2 to 600 10 70 na
TA Heimeier
Statico SD butyl 8 to 80 3 10 70 air-proof butyl bladder
Statico SE butyl 120 to 180 3 70 air-proof butyl bladder
Statico SU butyl 140 to 800 3 6 10 70 air-proof butyl bladder
Statico SG butyl1000 to
50006 10 70
air-proof butyl bladder replaceable diaphragm
Varem Solarvarem nitril 5 to 40 6 130 fixed diaphragm
Varem Solarvarem nitril 5 to 40 8 130 replaceable diaphragm
Solarvarem nitril 5 to 300 10 130 replaceable diaphragm
Watts Industries EG-Sol nitril 5 to 40 8 99 na
Zilmet Deutschland
Solarplus butyl-based 12 to 600 10 100 fixed diaphragm (half-shell)
Solarplus TM butyl-based 80 to 500 10 100 replaceable diaphragm
Zilflex Solar Plus Safe butyl-based 18 to 50 10 100integrated heat dissipation
vessel 6 to 15 L
Zilmet Deutschland SolarflexSBR divider diaphragm
12 to 150 6 to 10 70 na
Expansion vessels
1 up to 140 degC with heat dissipation vessel
Heat dissipation vessels
Supplier Product Volume [L]
Anton Eder EV heat dissipation vessel na
Elbi spa (Sferatec) VS-sol 5 to 50
Cimm pre-tank 12 to 24
Oventrop solar heat dissipation vessel 6 to 20
Varem heat dissipation vessel 18
Zilmet Deutschland heat dissipation vessel 5 to 200
Expansion vessel with bladder from Anton Eder Photo Anton Eder
Expansion vessels from Varem some of which feature a replaceable diaphragm Photo Varem
broad scope for optimisation with regard to the removal of air and other gases from solar sysshytems The technical solubility coefficients of various gases in solar fluids are yet to be invesshytigated and documented Determination of these coefficients a series of practical experishyments and the modelling of gas transport in soshylar systems are thus current topics for a reshysearch project at the Institute for Energy Techshynology of TU Dresden and the Laboratory of Nuclear Energy Systems at ETH Zurich The first results from tests performed with an indoor
system have already been presented With solar flushyids in contrast to water as the thermal medium there was apparently no or very little deaeration effect to be achieved with microbubble separators and air vents Influence on the level of gases in the fluid was rather to be attributed to degassing facilities For the case of largeshyscale systems therefore the scientists have framed the hypothesis that deaeration could even be left out altogether Testing under real outdoor condishytions began in June 2011 It remains to be seen whether this hypothesis will prove tenable
Katharina Ertmer
C
M
Y
CM
MY
CY
CMY
K
210x297enpdf 1 2011-12-12 180710
C
M
Y
CM
MY
CY
CMY
K
210x297enpdf 1 2011-12-12 180710