eneftech - booklet green

7/30/2019 Eneftech - Booklet GREEN

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BUILDINGS & OFFICE SPACESCombined production of Heat and Power

INDUSTRIAL SOLUTIONS

Waste Heat Recovery Bottoming Cycle

The ENEFCOGENGREEN line of products is designed for applications

of Combined Heat and Power.


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The economic advantage of reselling or consumingthe electricity produced is not the only advantage of

ENEFCOGEN products. The following points shouldbe considered carefully :

FlexibilityEneftech products have the uniqueability to absorb a variation of about70% of the input heat source. Theseproducts have been specially designedto meet the eld needs and hence

correspond to what is actually found in many plants.The ENEFCOGEN units can therefore adapt to avariable heat source to achieve up to 30% of thenominal power. The electricity and heat productionwill of course vary according to a similar ratio.

ModularityENEFCOGEN units can be paralleled andhence allow an insatllation to grow asrequired. For example, threeENEFCOGENGREEN units of 25kWeparalleled, will deliver 75kWe

(3x25kWe). This allows an installation to bedimensioned for a specic need and then, incase of an increase in energy requirements, to beadapted with additional units. In this case, the

number of units functioning at a given moment mustcorrespond to the energy requirements. In other words,all the units will adapt to the heat source, as individualunits would do.

Low maintenanceThe sealed design of ENEFCOGEN units,and a low number of moving parts haveresulted in a low need for maintenanceand increased lifetime.

Acoustic comfort

Due to their innovative andpowerful technology, the ENEFCOGENunits are silent. This feature allowsan eased implementation of Eneftechproducts, without the need for dedicated

CompactThe ENEFCOGENGREEN is very compact.

It occupies 1 m2 to 2 m2 of oor spacedepending on the model.

100% renewable cogenerationThe ENEFCOGEN unit can be coupledto a heat source whose energy comesfrom the sun or biomass. The electricityand heat produced are hence 100%renewable.

Improving the energy balanceCogeneration allows distributed powerproduction.Using the powerful ENEFCOGEN unitsadapted to the consumers needs, it ispossible to optimize the production of

electricity and heat (see diagram below).The consequent reduction of CO2 allows to furtherimprove the energy index of the building.

Recovery of Waste Heat

The thermal wastes are converted intoelectricty and the energy initially usedto dissipate heat through aerotherms issaved.

Benets of ENEFCOGENGREEN

Overall performance of decoupled production of heat and electricity :83%

Overall efficiency of an ENEFCOGEN cogeneration : 95%

Electric Centralr = 35%

Total : 100%

09%

74%

26%

100%

74%

Total losses : 17%

Electric Networkr = 97.5%

Condensation boilerr = 100%

10%

Total losses : 5%

ENEFCOGENr = 95%

Condensation boilerr = 100% 85%

facilities.


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Characteristics of ENEFCOGENGREENunits

Dimensions of ENEFCOGENGREENunits

010GRE-01

10kWe

020GRE-01

20kWe

030GRE-01

30kWe

Electrical power up toPerformances (Electricity Generation / Heat supplied)

kW

Cogeneration efficiency

Thermal power kW

Inlet temperature C

Outlet temperature * C

Thermal power

Thermal power required (Heat Required)

kW

Inlet temperature C

Outlet temperature C

Weight

Installation (Dimensions)

kg

Dimensions h/w/d mm

Electrical connections (three-phase)

45 80 156 170 260 255

20-30 20-30 20-30 20-30 20-30 20-30

5 10 15 20 25 30

95% 95% 95% 95% 95% 95%

30-40 30-40 30-40 30-40 30-40 30-40

53 95 180 200 300 300

125-135 140-150 125-135 140-150 125-135 140-150

105-115 115-130 105-115 115-130 105-115 115-130

600 1150 1300

1700x1500x750 2000x1900x1040 2000x1900x1040

400V / 50Hz, 32A 400V / 50Hz, 100A 400V / 50Hz, 100A

h1 mm

p1 mm

p2 mm

p3 mm

p4 mm

Flanges heat required PN40/DN40 PN40/DN50 PN40/DN50

Flanges heat supplied PN16/DN32 PN16/DN40 PN16/DN40

231 231 231

120 134 134

280 354 354

450 574 574

630 794 794

p1

h1

p2 p3 p4

l

p

h

* Depending on the options, the temperatures output by the ENEFCOGEN can be selected in a range of 30-65C


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Boiler

Power

Gas, biogas, biomass,

Thermal Solar Panels

Building

120-200 C

80-150 C

30-65 C

15-50 C

Solutions for buildings and oce spaces

CogenerationAn ENEFCOGEN unit allows the generation of

electricity and heat from thermal energy suppliedby a heat source (boiler or heating). The electricityproduced can be consumed in the building orinjected into the electrical grid while the heat isdirectly used for the heating and hot water in thebuilding.

Heating and hot waterThe low temperature heat produced by theENEFCOGEN module can be used in the buildingthrough:- Floor heating ;- Low temperature radiators ;- Fan coil units in heating mode ;- A hot water tank.

Application example

District heating networkFor an installation connected to an urban heating

network, the ENEFCOGEN module can be an add-on orreplace the heat exchanger to provide heat to thebuilding while producing electricity.

Boiler and thermal solarIn a new construction or during a renovation, theENEFCOGEN module may be coupled with :- A biomass boiler ;- A gas or oil boiler ;- Thermal Solar panels ;in order to produce electricity and provide heat tothe building.


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Solutions for buildings and oce spaces: Implementation diagram

01. ENEFCOGENGREEN line02. Heat exchanger for producing hot water03. High temperature boiler04. ENEFCOGEN Electric switchboard

05. Hot water tank06. Hydraulic module07. Pump station08. Regulator09. Thermal solar panels10. Drainage11. Circulation pump12. 3 way valve13. 3 way valve14. Draining and lling tap15. Hot water tank probes and solar regulation16. Heat sent towards the radiators, underoor

heating or hot water tank.


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Industrial Solution

CogenerationThe ENEFCOGENGREEN products allow the recovery

waste heat. They convert low quality thermal energyinto power energy of high value. The electricityproduced can be consumed at the industrial site orinjected into the electrical grid. Depending on theconguration of the site, the output thermal powercan also be used for heating.

Waste HeatThe waste heat to be recovered can come fromindustrial processes, motors (heat dissipation orheat from exhaust gases), a heat-power couple orany other equipment that generates heat.

Application example

Saving energyHeat rejected from industrial processes or motors

is generally dissipated by aerotherms placed on theroof. The installation of an ENEFCOGEN unit allows therecovery of these thermal residues and also reducesthe energy required for the heaters. The energygain is hence double.

Use of wasted heatThe low temperature heat residue resulting fromthe use of an ENEFCOGEN unit can be used forspace heating or, if necessary, destroyed withaerotherms.

120-160 C

70-120 C

35-50 C

20-35 C

Heat source

Microturbine

Heat exhaust

Boiler

Industry

Power

Thermal Solar Panels

Aerotherm


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Industrial solutions: Implementation diagram

01. Unit ENEFCOGENGREEN line02. Heat exchanger for producing hot water03. Heat exchanger04. ENEFCOGEN electric switchboard05. Hot water tank06. Hydraulic Module07. Regulator08. Circulation pump09. 3-way valve

10. Hot water tank probes and solar control11. Heat sent towards the radiators, underoor

heating or hot water tank.


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Organic Rankine Cycle (ORC) Modular Turbines scrolls

The generation of electricity from thermalsources at low temperatures (below 300C) is

possible thanks to organic uids (refrigerants).The main property of these uids is that theyevaporate at a low temperature. This allowsecient use of heat in low power applications (froman order of a few kW to several MW).The thermodynamic cycle using these refrigerantsis named after its inventor, William J. M. Rankine.

Compressor spirals (or scrolls) are recognized inthe market for their eciency and robustness. The

concept is simple and was patented in 1905 by theFrench engineer Lon Creux. Oering a wide rangeof operational advantages with performances farexceeding those of conventional machines, thetechnological development of these compressorswas quick and successful.Eneftech developed the approach and expertise,allowing the use of these scroll compressors inturbines for the generation of electricity fromlow temperature heat sources (between 120 and200C).

Eneftech Innovation SARue de Champ-Colin 2CCH-1260 Nyon / Switzerland

Phone +41 22 994 04 20Fax +41 22 566 27 43

[email protected]

www.eneftech.com

Electricity

Condensor

Evaporator

Pump

Turbine

Informatio

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