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TTC Timmler Technology

TTC Active and Passive Chilled Beams Planning Documentationfor Engineers and Plant Contractors

Contents | FeaturesActive TTC Chilled Beams

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General Information Pages 4–7

Order key for TTC Chilled Beams ·Notes in air conditioning ·Diagram of an air conditioned space ·

Controls and schematic diagram of TTC ·chilled beams

TTC Cassette Chilled Beam ACBLQ Pages 8–9

Installation in panelled ceilings ·Length and width (592 x 592 mm) ·Height 225 mm, side supply air ·connectionAir adjustment valve as standard ·Air discharge on 4 sides, individually ·adjustableRecirculating air intake through ·perforated cover

White casing (coating similar to RAL 9010) ·3 capacity levels ·

·Capacity at ∆m = 10 K, air volume flow 80 m³⁄h (4-sided air discharge); capacity level 9Cooling capacity QK(tot) = 500 WSound pressure level < 25 dB (A)

TTC Chilled Beam ACBLZ Pages 10–11

Installation preferably in panelled ceilings ·Low height 146 mm, top or end supply ·air connectionAir adjustment valve as standard ·Air discharge 2-sided ·Power level adjustable via the air ·adjustment valveWhite casing (coating similar to RAL 9010) ·

Capacity at ∆m = 10 K, air volume flow 40 m³⁄h (2-sided air discharge); capacity level 1, setting 5Cooling capacity QK(tot) = 500 W Sound pressure level < 25 dB (A) for a chilled beam length of 12 dm

TTC Chilled Beam ACBLA Pages 12–13

Installation preferably underneath the ·ceilingBuilt-in air passage grill ·Length ≈ 1200/1800/2400 mm ·Height 171 mm, Width 364 mm ·Recirculating air intake through ·perforated coverSupply air discharge on the side at the top ·Supply air inlet on the end ·


Capacity at ∆m = 10 K, air volume flow 60 m³⁄h (2-sided air discharge); capacity level 8Cooling capacity q K(spec) = 540 W/mSound pressure level < 25 dB (A) for a chilled beam length of 24 dm

TTC Chilled Beam ACBLE Pages 14–17

Installation preferably in panelled ceilings ·Built-in air passage grill ·Length ≈ 1200/1800/2400 mm ·Height 165 mm, Width 592 mm ·Recirculating air intake through ·perforated coverSupply air discharge horizontally under- ·neath the ceilingSupply air inlet on the end ·


Capacity at ∆m = 10 K, air volume flow 60 m³⁄h (2-sided air discharge); capacity level 8Cooling capacity q K(spec) = 540 W/mSound pressure level < 25 dB (A) for a chilled beam length of 24 dm

TTC Chilled Beam ACBLO Pages 18–19

Installation preferably in panelled ceilings ·Cover can be folded up or down ·Length ≈ 1200/1800/2400 mm ·Height 255 mm, width 595 mm ·Recirculating air inlet at the top ·Supply air discharge horizontally under- ·neath the ceilingSupply air inlet on the end ·


Capacity at ∆m = 10 K, air volume flow 50 m³⁄h (2-sided air discharge); capacity level 9Cooling capacity q K(spec) = 835W/mSound pressure level < 25 dB (A) for a chilled beam length of 24 dm

i

2

Contents | FeaturesPassive TTC Chilled Beams

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3

TTC Chilled Beam AECAK Pages 20–21

Installation underneath a ceiling ·Built-in air passage grill ·Length 10–40 dm in 5 dm-increments ·Height 142 mm ·Width 45/60 cm ·Recirculating air inlet at the top ·Cool air discharge at the bottom ·White casing (coating similar to RAL 9010) ·

Capacity at ∆m = 10 KWidth 45 cm Capacity qK(tot) = 275 W/mWidth 60 cmCooling capacity q K(tot) = 415 W/m

TTC Chilled Beam AECBK Pages 22–23

Installation underneath a ceiling ·Built-in air passage grill ·Length 10–40 dm in 5 dm-increments ·Height 156 mm ·Width 45/60 cm ·Recirculating air inlet at the top ·Cool air discharge at the bottom ·White casing (coating similar to RAL 9010) ·


TTC Chilled Beam AECBU Pages 24–25

Installation underneath a panelled ceiling ·Built-in air passage grill ·Length 10–40 dm in 5 dm-increments ·Height 122 mm ·Width 45/60 cm ·Recirculating air inlet at the top ·Cool air discharge at the bottom ·Casing made of galvanized steel plate ·


TTC Chilled Beam AECEU Pages 26–27

Installation underneath a panelled ceiling ·High performance chilled beam (ideal for ·sound and TV studios)Length 10–40 dm in 5 dm-increments ·Height 187 mm ·Width 45/60 cm ·Recirculating air inlet at the top ·Cool air discharge at the bottom ·Casing made of galvanized steel plate ·


Design Example for Passive Chilled Beam & Mollier-hx-Diagram Pages 28–29

Products in Use | Project Examples and combinated with LED light Pages 30–31

© 2010 TTC Timmler Technology GmbH

This document or any part thereof may not be

reprinted, copied, or translated and figures and

diagrams may not be used without prior permission

in writing from TTC Timmler Technology GmbH.

Project »Dexia Bank« ·Project »Altstadtpalais« ·Example Wall/Ceiling Installation ·Combination with Multifunctional ·Ceiling Covers and LED Lights

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ACBLO 30 60 2 H 6 B

Order Key for Floor Units

Air discharge directionS = Vertical air discharge (passive chilled beams)B = 2-sided air discharge (in air flow direction)R = Single-sided air discharge to the right (in air flow direction)L = Single-sided air discharge to the left (in air flow direction) 4 = 4-sided air discharge

Order Key for TTC Chilled Beams

ModelsActive Chilled Beams Passive Chilled Beams

ACBLQ AECAK

ACBLZ AECBK

ACBLA AECBU

ACBLE AECEU

ACBLO

Active Chilled Beams Passive Chilled BeamsType ACBLQ ACBLZ ACBLA ACBLE ACBLO AECAK AECBK AECBU AECEU

600 -- -- -- -- 1000 1000 1000 1000

-- 1200 1200 1200 1200 1500 1500 1500 1500

-- -- 1800 1800 1800 2000 2000 2000 2000

-- -- 2400 2400 2400 2500 2500 2500 2500

-- -- -- -- -- 3000 3000 3000 3000

-- -- -- -- -- 3500 3500 3500 3500

-- -- -- -- -- 4000 4000 4000 4000

Uni

t le

ngth

Lto

t[mm

]

Unit length Ltot[mm]

Unit width Wtot[mm]36 = for depth 362 mm

45 = for depth 455 mm

60 = for depth 605 and 592 mm

Pipe divisions1 (2, 3, 4 on request)

Water supply connectionH = HorizontalV = Vertical

*Power level 6 on request

Type ACBLQ ACBLZ ACBLA ACBLE ACBLO AECAK AECBK AECBU AECEU

-- -- -- -- -- 0 0 0 0

-- 1 -- -- -- -- -- -- --

6* -- 6* 6* 6* -- -- -- --

7 -- 7 7 7 -- -- -- --

-- -- 8 8 -- -- -- -- --

9 -- 9 9 9 -- -- -- --

12 -- 12 12 12 -- -- -- --

Active Chilled Beams Passive Chilled Beams

Pow

er L

evel

Power level

4

or the evaporation of sweat (latent heat discharge) as illustrated in Fig. 5.3).

Type of clothing worn ·Air temperature ·Relative humidity ·Air flow ·Temperature of the surrounding surfaces ·Level of a person’s physical activity, etc. ·

Is ventilation necessary?The German Standard DIN 1946/Part 2/Section 3.2 makes outside air flow rates compulsory for enclosed spaces so that people who work in these rooms are sup-plied with pre-conditioned outside air.In addition, a central ventilation system will remove the latent cooling percentage (air humidity) and any smells from the rooms.However, the air volume flow may be re-duced to the legal requirement. This would result in a substantial reduction in the size of the ventilation system needed.

The benefit of air conditioning Our thermal well-being depends on a number of factors. Our body will always try to balance its heat regulation so that all organs can work properly. In order for our organs and circulation to perform at opti- mum level our body temperature needs to remain at a constant 37 0C. This can only be achieved if both all sources that may generate heat (such as muscle activity, the burning of calories, etc.) and all ways to get rid of surplus heat (such as chivering, thin clothes, etc.) are in balance. Studies by P. O. Fanger have shown that people will only feel comfortable if they are in a neu-tral thermal state (Fig. 5.2), i.e. their ideal temperature is not disturbed. However, this ideal temperature may vary slightly from person to person.

Any deviation from this ideal temperature will result in a drop in performance from this person and reduce his productivity as well as his sense of well-being (Fig. 5.1). This important fact should always be taken into account when making an investment.Depending on ambient temperature, cloth-ing and Type of activity performed we regulate our body heat through convection and radiation (sensible heat discharge)

Why air conditioning?Su

bjec

t to

tec

hnic

al c

hang

es ·

Issu

ed 1

0/20

10

5.2

»Amin« minimum distances between active chilled beams arranged in parallel

5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6

7

6

5

4

3

2

1

0l/(s·m)

2 0 2 5 3 0 3 5 4 0 4 5 5 0 5 5m3/(h·m)23,5

1,2

v L = 0,2 m

/s

v L = 0,25 m/s

5.4 5

100

90

80

70

60

50

40

30

0 +1 +2 +3 +4 +5 +6-6 -5 -4 -3 -2 -1

Deviation from the ideal temperature [°C]

5.1

Perf

orm

ance

dro

p [%

]

How do chilled beams work?TTC chilled beams always directly affect the air that circulates in a room and any heat sources present. A chilled beam’s cooling capacity is always supplied to the room in the form of a natural no-draught convection. This ensures a high level of comfort as regards the protection from draughts and noises.TTC chilled beams are available in two designs:

Active chilled beams with air supply ·connectionPassive chilled beams ·

Active chilled beams have a constant air flow rate because of the central ventilation system. Passive chilled beams change their air flow rate and cooling capacity dependent on the temperature difference between the room temperature and the surface temperature of the chilled beams.For this Type of chilled beam the supply air flow rate, a compulsory requirement of the German Standard DIN 1946/Part 2/Section 3.2, must be provided using an additional ventilation system.

Note!Please refer to our planning document »TTC Silent Gravity Cooling Modultherm« where you will find further information on how temperature differences cause people discomfort and how well various air condi-tioning systems are accepted.

10 14 18 22 26 30 34 38

0

20

40

60

80

100

120

140

160

Radiation

Convection

Evaporation

Air temperature [°C]

5.3

Hea

t di

scha

rge

[W]

10 15 20 25 3010

15

20

25

•

23

21

16

k = 0,

5 W/m

2•K19 0C

k = 1,

0 W/m

2•K

k = 1,

5 W/m

2•K

ta = -10°C

te = 21 0C

23°C

Inte

rior w

all t

empe

ratu

re [°

C]

Deviation from the ideal temperature [°C]Comfort zone (Source: Paperback »Heizung und Kli-matechnik«, by Recknagel, Sprenger & Höhnmann)te = Perceived temperature, ta = Outdoor tempera-ture, k = Heat transfer rate of the walls

If several active chilled beams are to be ar-ranged in parallel the units must be spaced a minimum distance »Amin« apart.To roughly calculate the distance between the units you can use the formulaAmin = 1,4 · aL and Fig. 5.4. The diagram applies to the one-sided air discharge only; for two-sided air discharge you will need to halve the air volume flow VL(specif) when you determine theAmin spacing.

Example: Chilled beam with two-sided air discharge, VL(specif) = 47 (m³/h·m), required air flow rate in the roomvL = 0,2 m

aL = 47 m³/(h·m) · 0,5 = 23,5 m³/(h·m)equals: aL = 1,2 mThe »Amin« spacing between the chilled beams can now be calculated as follows:Amin = aL[m] · 1,4 = 1,2 m · 1,4 = 1,68 mIf there are very high thermal loads the parameter »Amin« can be reduced.

Specific air volume flow

Refe

renc

e di

stan

ce a

L [m

]

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Products in Use | Examples

••

•~

~

Air conditioning a room using TTC Chilled Beams

[1] TTC chilled beam, e.g. model ACBLE[2] Cold water return[3] Flexible pipe for the pre-conditioned outside air [4] Cold water flow[5] Dew sensor to prevent the temperature in the chilled beam from falling below the dew point (to be installed in the cold water flow »inside« the chilled beam to pick up the condition in the room)[6] Cooling mode control valve[7] Sequential controller for heating or cooling mode with a neutral zone between the two modes[8] Heating flow[9] Heating return [10] Heating mode control valve (inside the floor channel)[11] Radiator, e.g. TTC underfloor trenchheater[12] Cold water return[13] Cold water flow

[10] [9]

[AL][1] [5] [12][6]

[11]

[13]

[8]

[7]

6.16

Cooling, Heating, Ventilation Fig. 6.1 shows an example how a room can be fully air conditioned – cooled, heat-ed and ventilated – with TTC model ACBLE chilled beams and underfloor convectors for the heating mode.

[2] [3] [4]

Z Z Z

FL

UU

Heat transfer through people [W]

Activity ≈ W Level of Activity ≈ W/m³

Sleeping 60 –– 35

Lying down 80 –– 45

Normal office work 100 I 55

Typing 150 II 85

Walking slowly 3 km/h 200 III 110

Walking fast 6 km/h 250 IV

Heavy physical work ≥170

AL Supply air to ventilate the room and possibly to absorb humidity from the room (minimum supply air flow rates need to be complied with in line with German Standard DIN 1946/Part 2/ Section 3.2)FL Air passage grill to remove hygienically

tainted recirculating air (escaping air)U Warm recirculating airZ Outside and recirculating air that has been cooled in the chilled beam

The illustration does not show the air ·handling unit required to pre-condition the primary air supply.To supply the chilled beams with cold ·water you can either use suitable cold

water generators in heat pump mode or dry cooling towers to benefit from energy saving »freecooling«.

You will find more information on how to correctly control chilled beams on page 7.

Chilled beams are generally controlled with individual room or zone thermostats. This aims to satisfy the individual needs of the users. Room thermostats are installed to sequentially control the cooling and heating valve. This prevents any overlap between the heating and the cooling mode. The thermoelectrical actuators are applied to the room thermostat which is used to control the system based on a variance comparison.As the chilled beams are to remove sensible cooling loads only, a drop below the dew point must be avoided. It makes sense to install a dew sensor in the control circuit which will close the cooling valve if a drop below the dew point is detected.The chilled beams will discharge the cool air in a very natural way. The difference in temperature between the air in the room and on the surface of the air

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Operation and Function

7

cooler (floating temperature difference) automatically controls the level of cool air that is discharged.A two-point valve control (OPEN-CLOSED) for the chilled beams is totally adequate and has the benefit of providing you with a considerable cost saving.

Components neededA zone can be controlled (sequential con-trol) with the following components:

1 off valve box (valve gate), suitable for ·the installation of an electrical actuator1 off valve box (three-way valve) for ·the zone mixing control, suitable for the installation of an electrical actuator2 off 24 V actuators (currentless, nor- ·mally closed)1 off dew sensor ·1 off room thermostat ·1 off chilled beam controller, suitable for ·

heating/cooling mode and the connec-tion of a dew sensor1 off circulating pump to control the ·flow temperature

Note!Please do not hesitate to contact us with any questions you might have concerning your planning requirements.

Controls and schematic diagram for an air conditioning system using chilled beams in cooling mode

[1] TTC chilled beams (active)[2] Sequential control for one zone to be air conditioned[3] Room thermostat or room sensor for cooling/heating (incl. a neutral zone)[4] Overflow valve to avoid an increase of pressure in the pipe system

7.1

~

~

~~

~~

~

RT

[10]

[9]

[1]

[5][6]

[13]

[8][7]

[2]

[3]

[4]

[9]

[9]

[10]

[11]

[12]

[14]

[15]

Central unit with heat recovery (as an example)

Note!This diagram does not show the mandatory heaters.

[5] Three-way control valve for one zone[6] Secondary pump for one cooling circuit[7] Zone control valve with thermoelectrical actuator (currentless, normally closed)[8] Dew sensor to monitor the dew point[9] Electrical stop valves (OPEN-CLOSED) [10] Water circulating pumps for operation

with a cooling tower[11] Dry cooling tower[12] Three-way switching valve[13] Water cooled cold water set[14] Three-way control-valve to cool the outside air[15] Plate heat exchanger

5 6 7 8 9 10 11 12

700

650

600

550

500

450

400

350

300

250

200

150

100

PL. 7

36 m3/h40 m3/h50 m3/h60 m3/h70 m3/h80 m

3/h90 m3/h

8.5 Temperature difference ∆m [K]

Cool

ing

capa

city

[W]

Cooling capacity ACBLQ 0660 | Power level 7

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8.1

Dimensions

8.3

8.2 ACBLQ 0660 side view

Cassette Chilled Beam ACBLQ 0660 (active)Specification | Capacity Charts

The sound pressure level [dB(A)] refers to an effective room area of 10 m² Sabine and a reverbation period of 0,5 seconds.

Capacity charts, 4-sided air discharge

8

D B

A

C

350

300

250

200

550

500

450

400

700

650

600 100 m3/h

120 m3/h

80 m3/h

72 m3/h

5 6 7 8 9 10 11 12

PL. 9


Cool

ing

capa

city

[W]


350

300

250

200

5 6 7 8 9 10 11 12

550

500

450

400

600LPL 12 140 m

3/h

130 m3/h

120 m3/h

100 m3/h

90 m3/h


Cool

ing

capa

city

[W]


1000

500

300

200

100

50

10

20

150

3025 40 50 60 70 80 100 150 200 250

700

400

30

70

40 dB(A)

25 dB(A)

35 dB(A)

30 dB(A)

Level 7/4

Leve

l 9/4

Level

12/4

ACBLQ

8.4 Air volume flow VL [m³/h]

Air-

side

d pr

essu

re d

iffe

renc

e ∆

p L [P

a]

Air resistance, Sound pressure level*)Pressure drop [Pa], sound pressure level dB(A)Power level 7, 9 and 12 (100 % open)

8.2–8.3

Note!4 air discharge directions for the air supply. Air adjustment valves which come as standard allow 4 different settings for the air volume flow. The power levels in charts 8.4 to 8.7 apply only when the air adjustment valves are fully open (100 %).

Design features for model ACBLQ

The cassette chilled beam model ACBLQ is an active chilled beam. It’s design and operation combines a ceiling air discharge with a decentralized cooling unit.This means that none of the usual ad-ditional air discharge points are required which in turn helps to optimize both the investment and the energy costs. The de-sign allows for trouble-free installation in standard panelled ceilings which makes the unit suitable for a whole host of applica-tions. The units can be installed flush in panelled ceilings.

Air coolerThe air cooler is made of copper pipes covered with aluminium fins. To ensure a continuous heat transfer the fins and the pipes are bonded together..

The water quality of the coolant must ·meet the requirements of the German Standard VDI 2035Maximum operating pressure 6 bar* ·Maximum operating temperature 90°C* ·

*Further installation options on request

ConnectionsThe connecting pipes projects horizontally »H« from the casing. The copper con-nection pipes have a diameter of 15 mm. The connections are suitable for soldered joints, clamping joints and crimped con-nections.

Casing The casing is made of coated steel plate (the colour is white, similar to RAL 9010). The cover can be removed for maintenance purposes. For dimensions see Fig. 8.2. A ø 125 mm air inlet connector is located at the top of the casing. Upon request the unit can also be supplied with this connec-tor located at the side.An air adjustment to individually control the supply air volume flows on each air discharge side comes as standard.

Optionsø 125 mm air inlet connector located at ·the side of the unit

ApplicationsOffices, open plan offices, administrative buildings, restaurants, showrooms, galler-ies, supermarkets, department stores, etc.

[1] Panelled ceiling[2] Perforated cover to suck in recirculating air[U] Warm recirculating air[Z] Cooled supply air

* Note!You can calculate the water-sided pressure difference [kPa] of the panelled chilled beam, model ACBLQ, using the water volume flow (Formula 4) in Fig. 9.2.Further pressure optimization on request.

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Cassette Chilled Beam ACBLQ 0660 (active)Design Features | Installation Example

9

9.1 Installation example and function

[1][2]

Z

U

Z

Flush installation in panelled ceiling | Central recirculating air inlet

5

4

3

2

1

0

8

7

6

0 200 400100 300 500kg/h

0 0,05 0,10 0,15kg/s

ACBLQ 0660

10

9

1 pi

pe d

ivis

ion

9.2 Water volume flow mw [kg/h]

Wat

er-s

ided

pre

ssur

e dr

op [k

Pa]

Water-sided pressure drop* [∆pw]

Formula 4 to roughly estimate the water volume flow mW

Formula 1 to calculate the average temperature difference ∆m

tW1 [°C] + tW2 [°C]2∆m[K] = tR -

Q· k(tot) [kW]tW2 - tW1 [K]mW[kg/h] = 860 ·

Cool

ing

capa

city

[W]

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10

5 6 7 8 9 10 11 12

700

600

500

400

300

200

100

ACBLZ / 0

20 m3/h

40 m3/h

60 m3/h

50

10.5

Specif. cooling capacity ACBLZ 1260.1.2Air adjustment valve in position 0

10.1

Chilled Beam ACBLZ (active)Specification | Capacity Charts

Capacity charts 2-sided air discharge

5 6 7 8 9 10 11 12

600

500

400

300

200

100

ACBLZ / 5

20 m3/h

40 m3/h

60 m3/h

50

10.6

Air adjustment valve in position 5

5 6 7 8 9 10 11 12

600

500

400

300

200

100

ACBLZ / 10

20 m3/h

40 m3/h

60 m3/h

50

10.7

Air adjustment valve in position 10

alternative supply air connection

AL

594297

186 203146

130

56

146

∅15 ∅100

200

9x60≈50 1260

∅15

Dimensions

10.2

0 50 100 150 200 250 300 350

0 0,05 0,10

ACBLZ

0

1

2

3

4

5

6

7

8

9

10

kg/h

kg/s

1 Ro

hrte

ilung

10.4 Water volume flow mW [kg/h]

Wat

er-s

ided

pre

ssur

e dr

op [k

Pa/m

]

Water-sided pressure difference [∆pw]

20 30 40 60 80 100 130m3/h

4050

100

200

300

500

1000

30 dB(A)

25 dB(A)

35 dB(A)

40 dB(A)

5025

Position 0

Position 5

Position 10

Air volume flow vL [m³/h]

Air-

side

d pr

essu

re d

iffe

renc

e ∆

pL [P

a]

Air resistance | Sound pressure level*)

10.8

Technical data | Weights

Type L(tot)

[mm]L(finned)

[mm]Weight

[kg]

ACBLZ 1260 1193 1000 24

10.3

Temperature difference ∆m [K]


Cool

ing

capa

city

[W]


Cool

ing

capa

city

[W]

Water-sided1 pipe division

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11

Design features for model ACBLZ

The panelled chilled beam model ACBLZ is an active air conditioning unit. As it requires a supply air flow to operate it automatically meets the requirements regarding the ventilation of a room. An air adjustment valve to control the air flow volume comes as standard. Installation of the unit is in panelled ceilings. An additional air passage grill is not required.The structural design of the units will be explained in the following.

Air coolerThe air cooler is made of copper pipes covered with aluminium fins. To ensure a continuous heat transfer the fins and the pipes are bonded together.

The water quality of the coolant must ·meet the requirements of the German Standard VDI 2035Maximum operating pressure 6 bar ·Maximum operating temperature 90°C ·

ConnectionsThe chilled beams will be supplied with »H« (horizontal) connection pipes only. The connection pipes average diameter is

ø 15 mm with one pipe division ·ø 22 mm with two or more pipe divisions. ·

The supply air connection (ø 100 mm) is located at the end or alternatively at the top of the unit.

CasingThe casing is made of coated steel plate (the colour is white, similar to RAL 9010). The perforated recirculating air inlet cover can be removed for maintenance purposes. For dimensions see Fig. 10.2. Two mounting rails run along the top of the whole unit. The mounting brackets which are included in the delivery are at-tached to these rails.

OptionsIntegrated light fixture ·

Installation notesIf the chilled beams are to be arranged in parallel the installation requirements illus-trated in Fig. 11.2 must be complied with to ensure a trouble-free operation.

ApplicationsOffices, open plan offices, administrative buildings, restaurants, showrooms, sound and TV studios, supermarkets, department stores, etc.

Chilled Beams ACBLZ (active)Design Features | Installation Example


Z

U

Z

Flush installation in panelled ceiling

BAmin.≥ 0,7 · aL BAmin.≥ 1,4 · aL *) Amin.≥ 0,7 · aL

11.2

»Amin« minimum distances between chilled beams arranged in parallel

[U] Warm recirculating air entering the ch. b.[Z] Cooled recirculating and supply air leaving the ch. b.[AL] Centrally conditioned outside air

U

AL

Model ACBLZ chilled beams are installed in panelled ceilings only. An additional air pas-sage grill is not required.If a number of chilled beams are needed to meet the cooling requirements of the room the minimum installation distances given in Fig. 11.2 must be observed.

[B] Width of the chilled beam, see Fig. 10.2[Amin] Minimum distance between two chilled beams or a chilled beam and a wall, in line with the air volume flow, see Fig. 5.4

Note!You can calculate the water-sided pressure difference [kPa] of the panelled chilled beam, model ACBLZ, using the water volume flow (Formula 4) in Fig. 10.4.

2-sided air discharge

*)aL = Reference spacing (see page 5)

Supply air channel

tW1 [°C] + tW2 [°C]2∆m[K] = tR -

Q· K(tot) [kW]tW2 - tW1 [K]mW[kg/h] = 860 ·



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Specif. cooling capacity [qK(spez)] ACBLA __36

12.1

Chilled Beam ACBLA (active)Specification | Capacity Charts

Capacity Charts 2-sided air discharge

5 6 7 8 9 10 11 12

700

600

500

400

300

200

100

PL. / 8

50

60 m3/h·m

40 m3/h·m

20 m3/h·m

12.6

Cool

ing

capa

city

[W/m

]

Power level 8

5 6 7 8 9 10 11 12

600

500

400

300

200

100

PL. / 9

50

60 m3/h·m

40 m3/h·m

20 m3/h·m

12.7

Cool

ing

capa

city

[W/m

]

Power level 9

364182

18630

8641

171

∅15

∅15 ∅125

L(ges.)

170

9x60�50

159

Water-sided1 pipe division

AL

Dimensions

12.2

5

4

3

2

1

0

8

7

6

0 100 200 300 400 45050 150 250 350kg/hkg/s

0 0,05 0,10 0,13

ACBLA 36


Wat

er-s

ided

pre

ssur

e di

ffer

ence

[kPa

/m]



Type L(tot)

[mm]L(finned)

[mm]Weight

[kg]

ACBLE 1236 1193 1000 24

ACBLE 1836 1793 1600 36

ACBLE 2436 2393 2200 48

ACBLE 3036 2993 2800 60

12.3

5 6 7 8 9 10 11 12

500

400

300

200

100

PL. / 12

50

60 m3/h·m

40 m3/h·m

20 m3/h·m


Cool

ing

capa

city

[W/m

]

Power level 12

5 6 7 8 9 10 11 12

700

600

500

400

300

200

100

800

PL. / 7

50

60 m3/h·m

40 m3/h·m

20 m3/h·m

12.5

Cool

ing

capa

city

[W/m

]

Power level 7




13

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Design features for model ACBLA

Model ACBLA panelled chilled beams are active air conditioning units. As they require a supply air flow to operate they automatically meet the requirements regarding the ventilation of a room. Instal-lation of the units is underneath ceilings only. An additional air passage grill is not required. The structural design of the units will be explained in the following.



ConnectionsThe chilled beams will be supplied with »H« (horizontal) connection pipes only. The connection pipes average diameter is




OptionsAvailable unit lengths: 12–36 dm in 6 dm ·increments

Installation notesModel ACBLA chilled beams are always installed directly underneath the ceiling. If the chilled beams are to be arranged in parallel the installation requirements illus-trated in Fig. 13.2 must be complied with to ensure a trouble-free operation.


Chilled Beam ACBLA (active)Design Features | Installation Example


Z

U

Z

Installation underneath a ceiling

BBAmin 0,7 · aL Amin 1,4 · aL *) Amin 0,7 · aL


U

AL

Model ACBLA chilled beams are always installed underneath a ceiling. An additional air passage grill is not required.If a number of chilled beams are needed to meet the cooling requirements of the room the minimum installation distances given in Fig. 13.2 must be observed.

Z

Z

Z

Z

U

»Amin« Minimum distances between chilled beams arranged in parallel


Note!You can calculate the water-sided pressure difference [kPa] of the panelled chilled beam, model ACBLZ, using the water volume flow (Formula 4) in Fig. 12.4; please use Fig. 17.1–17.4 to calculate the sound pressure level.



13.2

tW1 [°C] + tW2 [°C]2∆m[K] = tR -

q (spezif) [kW/m] · L(finned)[m]tW2 - tW1 [K]mW[kg/h] = 860 ·



350

165

350439,14

592

135

1054,9

1192

ø98

332,9

7,6

14

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Specif. cooling capacity [qk(spez)] ACBLE __60

14.1

Chilled Beam ACBLE (active)Specification | Capacity Charts


5 6 7 8 9 10 11 12

700

600

500

400

300

200

100

PL. / 8

50

60 m3/h·m

40 m3/h·m

20 m3/h·m


Cool

ing

capa

city

[W/m

]

Power level 8

5 6 7 8 9 10 11 12

600

500

400

300

200

100

PL. / 9

50

60 m3/h·m

40 m3/h·m

20 m3/h·m


Cool

ing

capa

city

[W/m

]

Power level 9

Dimensions

14.2

5

4

3

2

1

0

8

7

6

0 100 200 300 400 45050 150 250 350kg/hkg/s

0 0,05 0,10 0,13

ACBLE 60

1 pi

pe d

ivisio

n


Wat

er-s

ided

pre

ssur

e di

ffer

ence

[kPa

/m]



Type L(tot)

[mm]L(finned)

[mm]Weight

[kg]

ACBLE 1260 1193 1000 40

ACBLE 1860 1793 1600 60

ACBLE 2460 2393 2200 80

ACBLE 3060 2993 2800 100

14.3

5 6 7 8 9 10 11 12

500

400

300

200

100

PL. / 12

50

60 m3/h·m

40 m3/h·m

20 m3/h·m


Cool

ing

capa

city

[W/m

]

Power level 12

5 6 7 8 9 10 11 12

700

600

500

400

300

200

100

800

PL. / 7

50

60 m3/h·m

40 m3/h·m

20 m3/h·m


Cool

ing

capa

city

[W/m

]

Power level 7

15

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Design features for model ACBLE

Model ACBLE panelled chilled beams are active air conditioning units. As they require a supply air flow to operate they automatically meet the requirements re-garding the ventilation of a room. Installa-tion of the units is in panelled ceilings. An additional air passage grill is not required. The structural design of the units will be explained in the following.



ConnectionsThe chilled beams can be ordered with »H« (horizontal) or »V« (vertical) connection pipes only. The connection pipes average diameter is




OptionsAvailable unit lengths: 12–36 dm in 6 dm ·increments

Installation notesIf the chilled beams are to be arranged in parallel the installation requirements illus-trated in Fig. 15.2 must be complied with to ensure a trouble-free operation.


Chilled Beam ACBLE (active)Design Features | Installation Example


U

Z

Installation in panelled ceiling

B BAmin.≥ 0,7 · aL Amin.≥ 1,4 · aL *) Amin.≥ 0,7 · aL

U

AL

Model ACBLE chilled beams are always installed flush in panelled ceilings. An additional air passage grill is not required.If a number of chilled beams are needed to meet the cooling requirements of the room the minimum installation distances given in Fig. 15.2 must be observed.

Note!Other installation options on request.

Z

Z

»Amin« Minimum distance between two chilled beams arranged in parallel


Note!You can calculate the water-sided pressure difference [kPa] of the panelled chilled beam, model ACBLE, using the water volume flow (Formula 4) in Fig. 14.4; please use Fig. 16.4–16.7 and 17.1–17.4 to calculate the sound pressure level.



15.2

Formula 4 to roughly estimate the water volume flow mw

q k(spezif) [kW/m] · L(finned)[m](tW2 - tW1) [K]mW[kg/h] = 860 ·

Supply air channel



Chilled Beam ACBLA/ACBLE (active) Specification | Capacity Charts for 1-sided Air Discharge

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16.15 6 7 8 9 10 11 12

700

600

500

400

300

200

100

PL. / 8

50

60 m3/h·m

40 m3/h·m

20 m3/h·m


Cool

ing

capa

city

[W/m

]

16

Specif. cooling capacity [q· K(spezif)] | 1-sided air dischargePower level 8

5 6 7 8 9 10 11 12

600

500

400

300

200

100

PL. / 9

50

60 m3/h·m

40 m3/h·m

20 m3/h·m

16.2

Cool

ing

capa

city

[W/m

]

Power level 9

5 6 7 8 9 10 11 12

500

400

300

200

10050

PL. / 12

60 m3/h·m

40 m3/h·m

20 m3/h·m

16.3

Cool

ing

capa

city

[W/m

]

Power level 12

Note!*) The sound pressure level [dB(A)] refers to an effective room area of 10 m² Sabine and a reverbation period of 0,5 seconds.Other power levels on request.


Air resistance | Sound pressure level* | 1-sided air discharge

16.4

1000

500

300

200

100

50

30

20

150

20 30 40 60 80 100 200m3/h

ACBLA/E 12 dm

L

evel

12

40 dB(A)

35 dB(A)

30 dB(A)

25 dB(A) Le

vel 8

Le

vel 9

Air volume flow V· L

ACBLA 1236ACBLE 1260


1000

500

300

200

100

50

30

20

150

20 30 40 60 80 100 200m3/h

ACBLA/E 18 dm

Leve

l 12

40 dB(A)

35 dB(A)

30 dB(A)

25 dB(A)

Le

vel 8

Lev

el 9

16.5


500

300

200

100

50

30

1520

150

30 40 60 80 100 200m3/h

Le

vel 8

-1 L

evel

9-1

Leve

l 12-

140 dB(A)

35 dB(A)

25 dB(A)

30 dB(A)

ACBLA/E 24 dm

700

16.6



500

300

200

100

50

30

1520

150

25 30 40 60 80 100 200m3/h

Leve

l 12

Leve

l 8

Leve

l 9

ACBLA/E 30 dm700

16.7



Air p

ress

ure

drop

∆p L

[Pa]

Air p

ress

ure

drop

∆p L

[Pa]

Air r

esis

tanc

e ∆

p L [P

a]Ai

r pre

ssur

e dr

op ∆

p L [P

a]

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Chilled Beam ACBLA/ACBLE (active) Air Resistance and Sound Pressure Level for 2-sided Air Discharge

17

Air resistance | Sound pressure level* | 2-sided air dischargeAi

r pre

ssur

e dr

op ∆

p L [P

a]

17.1

1000

500

300

200

100

50

30

1520

150

20 30 40 60 80 100 200m3/h

ACBLA/E 12 dm

35 dB[A]

40 dB[A]

30 dB[A]

25 dB[A]

Lev

el 7

Lev

el 8

Lev

el 9

Le

vel 1

2



Air p

ress

ure

drop

∆p L

[Pa]


1000

500

300

200

100

50

30

1520

150

20 30 40 60 80 100 200m3/h

Le

vel 7

Leve

l 8

ACBLA/E 18 dm

35 dB[A]40 dB[A]

30 dB[A]

25 dB[A]

Leve

l 9

Leve

l 12

17.2


20 30 40 60 80 100 200m3/h

1000

500

100

200

503020

10

5

ACBLA/E 24 dm

35 dB[A]40 dB[A]

30 dB[A]25 dB[A]

Leve

l 7

Leve

l 8

Leve

l 12 L

evel 9

17.3

AIr p

ress

ure

drop

∆p L

[Pa]



20 30 40 60 80 100 200m3/h

1000

500

100

200

503020

10

5

ACBLA/E 30 dm

35 dB[A]40 dB[A]

30 dB[A]

25 dB[A]

Leve

l 7

Leve

l 8

Leve

l 9

Leve

l 12

17.4

Air p

ress

ure

drop

∆p L

[Pa]



Note!*) The sound pressure level [dB(A)] refers to an effective room area of 10 m² Sabine and a reverbation period of 0,5 seconds.Other power levels on request.

Formula 3 Calculating the total cooling capacity QKtot (1 unit)Q· K(tot)[kW] = q ˙K(specif)[W/m] · L(finned)[m]

Formula 4 Estimating roughly the water volume flow mw


Formula 1 Calculating the average temperature difference ∆m

tW1 [°C] + tW2 [°C]2

∆m[K] = tR -

Formula 5 Calculating the total water-sided pressure drop (1 unit)∆pW(tot)[kPa] = ∆qW(specif)[W/m] · L(finned)[m]

Formulas for calculation

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18.1

Chilled Beam ACBLO (active)Specification | Capacity Charts


1200

1100

1000

900

800

700

600

500

400

300

200

5 6 7 8 9 10 11 12

50 m3/(h·m)

36 m3/(h·m)

PL. / 965 m3/(h

·m)

•


Cool

ing

capa

city

[W/m

]

Power level 9

5 6 7 8 9 10 11 12

1400

1300

1200

1100

1000

900

800

700

600

500

400

PL. / 12

86 m3/(h·m)

65 m3/(h·m)

108 m3/(h·m)

55066 m3/(h·m)


Cool

ing

capa

city

[W/m

]

Power level 12

235

602

202

525

296,5

20

ø125

39

39

60 x 9

L(ges.)

L(berippt)

405

ø15

Dimensions

18.2


TypeL(tot)

[mm]

L(finned)

[mm]

Weight

[kg]

min. distance to the ceiling

[mm]

ACBLO 1260 1193 1000 40 100

ACBLO 1860 1793 1600 60 100

ACBLO 2460 2393 2200 80 100

ACBLO 3060 2993 2800 100 100

18.3

1200

1100

1000

900

800

700

600

500

400

300

2005 6 7 8 9 10 11 12

PL. / 6

40 m3/(h·m)

36 m3/(h·m)

29 m3/(h·m)

22 m3/(h·m)

18.4 Temperature difference ∆m [K]Co

olin

g ca

paci

ty [W

/m]

Power level 7

Sb

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19

Design features for model ACBLO

Model ACBLO chilled beams are active air conditioning units. As they require a supply air flow to operate they automatically meet the requirements regarding the ventilation of a room. Installation is flush to a panelled ceiling. The structural design of the units will be explained in the following.


The water quality of the coolant must ·meet the requirements of the German Standard VDI 2035Maximum operating pressure 6 bar* ·Maximum operating temperature 90°C* ·

*Other installation options on request.



The supply air connection (ø 100 mm) is lo-cated at the end of the unit. (see page 18).

Casing The casing is made of coated steel plate (the colour is white, similar to RAL 9010). The recirculating air inlet cover can be removed for maintenance purposes. For dimensions see Fig. 18.2. Two mounting rails run along the top of the whole unit. The mounting brackets which are included in the delivery are at-tached to these rails.

OptionsAvailable unit lengths: 12–36 dm in ·6 dm increments1- and 2-sided air discharge ·

Installation notesThe installation requirements for chilled beams illustrated in Fig. 18.3 in respect of the distances to the ceiling must be complied with as the stated cooling rates will not be achieved otherwise.


Chilled Beam ACBLO (active)Design Features | Installation Example


UZ

Installation in a panelled ceiling

B B

Sb Sb

Amin.≥ 0,7 · aL Amin.≥ 1,4 · aL *) Amin.≥ 0,7 · aL

D min

[AL] Centrally conditioned outside air[U] Warm recirculating air entering the ch. b.[Z] Cooled recirculating and supply air leaving the ch. b.[SL] Recirculating air induced by the supply air flow

U

AL

Model ACBLO chilled beams are always installed flush in panelled ceilings.If a number of chilled beams are needed to meet the cooling requirements of the room the minimum installation distances given in Fig. 19.2 must be observed.The edge gaps »Sb« must be at least 70 % of the free area of the chilled beam’s face view.

Note!Other installation options available on request.

Z

Z


[B] Width of the chilled beam, see Fig. 18.2[Amin] Minimum distance between two chilled beams or between a chilled beam and a wall, in line with the air volume flow, see Fig. 5.4[Dmin] Minimum distance between the top edge of the chilled beam and the prefabricated or the room’s ceiling, see Fig. 18.3



19.2

SL

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20.1

Chilled Beam AECAK (passive)Specification | Capacity Charts

375453

255

40

9 x60

39

142

525603

405

9x60

142

39

Dimensions

20.2


Mounting bracketsUp to 2,4 m 2 offfrom 2,5 m 3 off

350

300

250

200

150

100

50

00 1 2 3 4 5 6 7 8 9 10 11 12

AECAK 550

500

450

400

Unit width 45

Unit w

idth 6

0


Spec

if. c

oolin

g ca

paci

ty [W

/m]

Specific cooling capacity [qK(spez)]

L(tot)

[mm]

L(finned)

[mm]

Chilled beam

witdh B[mm]

Distance to the ceiling

Dmin

[mm]

Watercontent

[l]

Weight

[≈kg]

1000 800 450 80 0,80 8

1500 1300 450 80 1,20 12

2000 1800 450 80 1,60 16

2500 2300 450 80 2,00 20

3000 2800 450 80 2,40 24

3500 3300 450 80 2,80 28

4000 3800 450 80 3,20 32

1000 800 600 120 1,10 10

1500 1300 600 120 1,65 15

2000 1800 600 120 2,20 20

2500 2300 600 120 2,75 25

3000 2800 600 120 3,30 30

3500 3300 600 120 3,85 35

4000 3800 600 120 4,40 40

20.3

Connections1 pipe divisionø 15; 150 mm long

20.5

5

4

3

2

1

0

8

7

6

0 200 400 600 800 900100 300 500 700kg/h

0 0,05 0,10 0,15 0,20 0,25kg/s

AECBK 45AECBK 60

Water volume flow mw [kg/h]

Spec

if. p

ress

ure

drop

[kPa

/m]

Specific pressure drop [∆pw]

∆m[K] = Average temperature difference between two different mediatR [°C] = Room temperaturetW1 [°C] = Water inlet temperature tW2 [°C] = Water outlet temperaturem· W[kg/h] = Water volume flowQ·

K(tot) = Total cooling capacity of a hilled beam q· K(spezif)[W/m] = Cooling power per metre of finned chilled beam length (L (finned))(L(finned)) [m] = L(tot)[m] - 0,2 m∆pW(tot)[kPa] = Total pressure drop of a chilled beam∆pW(spezif)[kPa/m] = Specific pressure drop of 1 m finned chilled beam length (L (finned)) see Fig. 20.5






tW1 [°C] + tW2 [°C]2∆m[K] = tR -


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a

Design features for model AECAK

Model AECAK chilled beams are designed to be seen. They can be used in areas with high cooling loads such as department stores with high thermal loads, etc. The units can be tailor-made to complement the architectural design of the room. The structural design of the units will be explained in the following.


The water quality of the coolant must ·meet the requirements of the German Standard VDI 2035Finned length of the chilled beam L · finned, see Fig. 20.3Maximum operating pressure 6 bar ·Maximum operating temperature 90°C ·


ø 15 mm with one pipe division ·

Casing The casing is made of coated steel plate (the colour is white, similar to RAL 9010). For dimensions see Fig. 20.2; unit length Lges and finned length of chilled beam Lfinned see Fig. 20.3. Mounting rails run along the top of the whole unit. The mounting brackets which are included in the delivery are attached to these rails.White special fins protect the interior of the chilled beam.

Optionsintegrated lighting fixtures ·integrated smoke detectors ·



Chilled Beam AECAK (passive)Design Features | Installation Example


U

Z

Installation underneath a ceiling in plain view

B BA ≥ 0,5 · B A ≥ 1,4 · B A ≥ 0,5 · B

Dmin

U

Model AECAK chilled beams are installed in plain view underneath a ceiling. An additional air passage grill is not required.If a number of chilled beams are needed to meet the cooling requirements of the room the minimum installation distances given in Fig. 21.2 must be observed.

Z

Z


[B] Width of the chilled beam, see Fig. 20.2[Amin] Minimum distance between a chilled beam and a wall[Dmin] Minimum distance between the top edge of the chilled beam and a prefabricated or room’s ceiling, see Fig. 20.3

21.2

U

[U] Warm recirculating air entering the ch. b.[Z] Cooled recirculating air floating down

Note!Please refer to the Order Key on page 4.

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22.1

Chilled Beam AECBK (passive)Specification | Capacity Charts

350

300

250

200

150

100

50

00 1 2 3 4 5 6 7 8 9 10 11 12

AECBK550

500

450

400

Unit width 45

Unit width 60


Spec

if. c

oolin

g ca

paci

ty [W

/m]



22.3

375453

255

40

9 x 60

39

156

525605

405

9 x 60

156

Dimensions

22.2

22.5

5

4

3

2

1

0

8

7

6

0 200 400 600 800 900100 300 500 700kg/h

0 0,05 0,10 0,15 0,20 0,25kg/s

AECBK 45AECBK 60


Spec

if. p

ress

ure

drop

[kPa

/m]



Note! Design example for passive chilled beams page 28.









tW1 [°C] + tW2 [°C]2∆m[K] = tR -


L(tot)

[mm]

L(finned)

[mm]

Chilled beam

width B[mm]


Dmin

[mm]

Watercontent

[l]

Weight

[≈kg]

1000 800 450 80 0,80 8

1500 1300 450 80 1,20 12

2000 1800 450 80 1,60 16

2500 2300 450 80 2,00 20

3000 2800 450 80 2,40 24

3500 3300 450 80 2,80 28

4000 3800 450 80 3,20 32

1000 800 600 120 1,10 10

1500 1300 600 120 1,65 15

2000 1800 600 120 2,20 20

2500 2300 600 120 2,75 25

3000 2800 600 120 3,30 30

3500 3300 600 120 3,85 35

4000 3800 600 120 4,40 40

23

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Design features for model AECBK

Model AECBK chilled beams are designed to be seen. They can be used in areas with high cooling loads such as department stores with high thermal loads, etc. The units can be tailor-made to complement the architectural design of the room. The structural design of the units will be explained in the following.





Casing The casing is made of coated steel plate (the colour is white, similar to RAL 9010). For dimensions see Fig. 22.2; unit length Lges and finned length of chilled beam Lfinned see Fig. 22.3. Mounting rails run along the top of the whole unit. The mounting brackets which are included in the delivery are attached to these rails.White special fins protect the interior of the chilled beam.

Optionsintegrated lighting fixtures ·integrated smoke detectors ·



Chilled Beam AECBK (passive)Design Features | Installation Example


UZ

Installation underneath a ceiling in plain view

B BA ≥ 0,5 · B A ≥ 1,4 · B A ≥ 0,5 · B

Dmin

U

Model AECBK chilled beams are installed in plain view underneath a ceiling. An additional air passage grill is not required.If a number of chilled beams are needed to meet the cooling requirements of the room the minimum installation distances given in Fig. 23.2 must be observed.

Z

Z


[B] Width of the chilled beam, see Fig. 22.2[Amin] Minimum distance between a chilled beam and a wall[Dmin] Minimum distance between the top edge of the chilled beam and a prefabricated or room’s ceiling, see Fig. 22.3

23.2

U

[U] Warm recirculating air entering the ch. b.[Z] Cooled recirculating air floating down


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24.1

Chilled Beam AECBU (passive)Specification | Capacity Charts

375455

255

40

9x60

39

122

525605

405

9x60

122

Dimensions

24.2

350

300

250

200

150

100

50

0 1 2 3 4 5 6 7 8 9 10 11 12

550

500

450

400

Unit width 45

Unit widt

h 60 AECBU

•

270

180

•


Spec

if. c

oolin

g ca

paci

ty [W

/m]


24.5

5

4

3

2

1

0

8

7

6

0 200 400 600 800 900100 300 500 700kg/h

0 0,05 0,10 0,15 0,20 0,25kg/s

AECBU

Uni

t wid

th 6

0

Unit

widt

h 45

•1,9

267


Spec

if. p

ress

ure

drop

[kPa

/m]



24.3











tW1 [°C] + tW2 [°C]2∆m[K] = tR -


L(tot)

[mm]

L(finned)

[mm]

Chilled beam

width B[mm]


Dmin

[mm]

Watercontent

[l]

Weight

[≈kg]

1000 800 450 80 0,80 8

1500 1300 450 80 1,20 12

2000 1800 450 80 1,60 16

2500 2300 450 80 2,00 20

3000 2800 450 80 2,40 24

3500 3300 450 80 2,80 28

4000 3800 450 80 3,20 32

1000 800 600 120 1,10 10

1500 1300 600 120 1,65 15

2000 1800 600 120 2,20 20

2500 2300 600 120 2,75 25

3000 2800 600 120 3,30 30

3500 3300 600 120 3,85 35

4000 3800 600 120 4,40 40

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Sb

Design features for model AECBU

Model AECBU chilled beams are prefer-ably used in panelled ceilings or specially designed panelling systems. The units can be tailor-made to complement the architectural design of the room. An air passage grill [2] is required on the side that is visible from the room for optical reasons. The structural design of the units will be explained in the following.





Casing The casing is made of coated steel plate. For dimensions see Fig. 24.2.Mounting rails run along the top of the whole unit. The mounting brackets which are included in the delivery are attached to these rails.



Chilled Beam AECBU (passive)Design Features | Installation Example


Z

Installation in panelled ceiling | Air intake through gaps along the edges

A ≥ 1,4 · BB B

Sb Sb

A ≥ 0,5 · B A ≥ 0,5 · B

Dmin

U

Model AECBU chilled beams are installed in a panelled ceiling. An air passage grill [2] is required to protect the interior of the unit from view. The free area of a grill must be 70 % of the free face area of the chilled beam. If the panelled ceiling is installed flush with the walls the air intake will be through the air intake grills [3], see Fig. 25.2. If a number of chilled beams are needed to meet the cooling requirements of the room the minimum installation distances given in Fig. 25.3 must be observed.Other installation options on request.

Z

Z


[B] Width of the chilled beam, see Fig. 24.2[Amin] Minimum distance between two chilled beams or between a chilled beam and a wall[Dmin] Minimum distance between the top edge of the chilled beam and a prefabricated or room’s ceiling, see Fig. 24.3

25.3

U

[1] Panelled ceiling[2] Air passage grill[U] Warm recirculating air entering the ch. b.[Z] Cooled recirculating air leaving the ch. b.


[2][1]


Installation in panelled ceiling | Air intake through 2 grills at either side of the unit

U

Z

U

[1] Panelled ceiling[2] Air passage grill[3] Air intake grill[U] Warm recirculating air entering the ch. b.[Z] Cooled recirculating air leaving the ch. b.

[2] [1][3]

Z

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26.1

Chilled Beam AECEU (passive)Specification | Capacity Charts

39455

255

9x60

39

187

605

405

9x60

187

Dimensions

26.2

350

300

250

200

150

100

50

0 1 2 3 4 5 6 7 8 9 10 11 12

550

500

450

400 Unit w

idth 45

700

650

600

AECEU

Unit

widt

h 60

26.4 Temperature difference ∆m [K]Sp

ecif.

coo

ling

capa

city

[W/m

]


26.5

5

4

3

2

1

0

8

7

6

0 200 400 600 800 900100 300 500 700kg/h

0 0,05 0,10 0,15 0,20 0,25kg/s

AECEU

10

9

Uni

t wid

th 4

5

Uni

t wid

th 6

0


Spec

if. p

ress

ure

drop

[kPa

/m]

Specif. pressure drop [∆pw]

Technical data | Weights Formulas for calculation










tW1 [°C] + tW2 [°C]2∆m[K] = tR -


L(tot)

[mm]

L(finned)

[mm]

Chilled beam

width B[mm]


Dmin

[mm]

Watercontent

[l]

Weight

[≈kg]

1000 800 450 80 0,80 8

1500 1300 450 80 1,20 12

2000 1800 450 80 1,60 16

2500 2300 450 80 2,00 20

3000 2800 450 80 2,40 24

3500 3300 450 80 2,80 28

4000 3800 450 80 3,20 32

1000 800 600 120 1,10 10

1500 1300 600 120 1,65 15

2000 1800 600 120 2,20 20

2500 2300 600 120 2,75 25

3000 2800 600 120 3,30 30

3500 3300 600 120 3,85 35

4000 3800 600 120 4,40 40

26.3

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Design features for model AECEU

Model AECEU chilled beams are high performance units. It’s the unit of choice for locations with very high sensible cool-ing loads such as sound and TV studios, department stores with high thermal loads due to the lighting, computer rooms, etc. Installation is in panelled ceiling, behind decorative panels to protect them from view or in plain view if being able to see the technology is not a problem. Due to the high cooling power it is not recom-mended for people to occupy an area directly below the chilled beam for long periods (air flow rate > 0,25 m/s). TTC can supply suitable solutions for such an ap-plication.





Casing The casing is made of coated steel plate. For dimensions see Fig. 26.2; unit length Lges and finned length of chilled beam Lfinned see Fig. 26.3. Mounting rails run along the top of the whole unit. The mounting brackets which are included in the delivery are attached to these rails.



Chilled Beam AECEU (passive)Design Features | Installation Example


Installation in panelled ceiling | Air intake through 1 grill

B B

Sb Sb

A ≥ 0,5 · B A ≥ 1,4 · B A ≥ 0,5 · B

Dmin

U

Model AECEU chilled beams are installed preferably in a panelled ceiling [1]. An air pas-sage grill [2] is required to protect the interior of the unit from view. The free area of the edge gaps »Sb« must be 70 % of the free face area of the chilled beam. If the panelled ceiling is installed flush with the walls the air intake will be through the air gaps [4], see Fig. 27.2. If a number of chilled beams are needed to meet the cooling requirements of the room the minimum installation distances given in Fig. 27.3 must be observed.

Z

Z

»Amin« Mindestabstände bei parallel angeordneten Chilled Beamen

[B] Width of the chilled beam, see Fig. 27.2[Amin] Minimum distance between two chilled beams or between a chilled beam and a wall[Dmin] Minimum distance between the top edge of the chilled beam and a prefabricated or room’s ceiling, see Fig. 27.3

27.3

U



Installation in panelled ceiling | Air intake through air gaps

U

Z

U

[2] [1][4]

[2] [1][3]

U

Z

[1] Panelled ceiling[2] Air passage grill[U] Warm recirculating air entering the ch. b.[Z] Cooled recirculating air leaving the ch. b.

[1] Panelled ceiling[2] Air passage grill[4] Air gaps[U] Warm recirculating air entering the ch. b.[Z] Cooled recirculating air leaving the ch. b.

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The TaskAn office with a sensible cooling load of Q· K(sen) = 1.200 W is to be cooled using two pas-sive chilled beams of the type AECBU. In addition, preconditioned primary air will be fed into the room. The chilled beams are to be installed in a panelled ceiling at a height of 2,7 m.The required supply air flow will be supplied to the room through a ventilation system.The room volume is approx. 80 m³.

Cold water temperatures: t · W1 = 17°C and tW2 = 19°C Room temperature: t · R = 26°C Supply air temperature: t · L(ZU) = 18°CMax. possible installation length L · (tot) = 5,50 m The supply air flow V · ·

L(ZU) shall be 240 m³/h, i.e. the air in the room is to be changed 3 times Cooling capacity Q · ·

K(sen) = 600 W per chilled beam

The Solution (explained step by step)1. Use Formula 1 to calculate the average temperature difference ∆m

2. Fig. 24.4 gives the following specific cooling capacity qK(specif.) for unit width of 45 and 60 at ∆m = 8 K:

(Unit width 45) q · ·K(specif) = 180 W/m

(Unit width 60) q · ·K(specif) = 270 W/m

3. Calculate the required finned length of the chilled beamsa) (Unit width 45) L · (finned) = Q· K(sen)[W]: q·K(specif)[W/m] = 600 W : 180 W/m ≈ 3,33 mb) (Unit width 60) L · (finned) = Q· K(sen)[W]: q·K(specif)[W/m] = 600 W : 270 W/m ≈ 2,22 m

Deduction in line with Fig. 24.3:for a) part no. AECBU3545, unit length L · (tot.) = 35 dm > equivalent to L(finned) = 3,3 dm for b) part no. AECBU2560, unit length L · (tot.) = 25 dm > equivalent to L(finned) = 2,3 dm

4. Select the chilled beam you require from step 3. In respect of the installation length you could use both of the chilled beams. For the subsequent calculation we have chosen solution »b« (part no. AECBU2560 _ _ _ OS) Installed cooling capacity Q· K(sen) = 270 W/m · 2,3 m = 621 W (required 600 W)

Water-sided pressure drop5. Rough calculation of the water volume flow using formula 4

6. Calculate the total water-sided pressure drop using formula 5Fig. 24.5 · shows a specific pressure drop of ∆pW(specif) = 1,9 kPa/m for mW = 267 kg/h The selected chilled beam AECBU 2560 has a finned length of L · (finned) = 33 dm = 3,3 m

∆pW(tot)[kPa] = ∆pW(spezif)[kPa/m] · L(finned)[m] = 1,9 kPa/m · 2,3 m = 4,37 kPa

Air-sided cooling capacity7. The additional cooling capacity provided through the required supply air supply at 240 m³/h is calculated as follows:

Other calculation criteria >

Calculate ∆m >

Calculate q· K(spezif.) >

Required finned length L(finned) >

Required finned length L(finned) >

Unit width B 45 cm >Unit width B 60 cm >

Select a chilled beam >

Water volume flow m· W >

Calculate ∆p·W(specif) >

Total water-sided pressure drop >

Cooling power of the primary air >

Please note > Note! Corrective factors must be applied to the calculated cooling power if TTC grills are used for air inlet and air discharge (please refer to the TTC Modultherm Planning Documenta-tion)

Design ExamplePassive Chilled Beam | Example model AECBU


(tW1 + tW2)°C2

∆m[K] = tR - = 26 - 17°C + 19°C2

= 8 K

} Note! For people to feel comfortable a specific cooling power of 250 W/m should not be exceeded in rooms used as offices.

0,27 kW/m · 2,3 m2 K= 860 · = 267 kg/h

240 (m³/h) · 1,2 (kg/m³) · 1 (kJ/kg·K) · 8 (K)3600Q·

K(air)[kW] = = 0,64 kW

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45

40

35

30

25

20

15

10

5

0

- 5

-10

-15

Quantity of m

oisture x

in g/kg of dry a

ir

E

nthalpy in

kJ/kg

relative

humidity � = 0,8

1,15 density in kg/m3

Mollier h,x-DiagrammBarometer reading 1013 mb

1,35

1,30

1,25

1,20

0,1 0,2

0,3

0,4

0,5

0,6

0,7

0,9

1

10

11

12

13

14

1516

17

65

60

55

50

45

40

35

30

25

20

15

10

5

0

-5

-10

2

3

4

5

6

7

8

9

4200

4000

3500

3000

2500

2000

1500

1000

5000-500

dh dx

in k

J/kg

t L [°

C]

18

Comfort zone

Mollier h,x-Diagramm

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Dexia Bank, Luxemburg Architect Claude VasconiFor the new administrative building of Dexia Bank in Luxemburg, TTC developed an active chilled beam (ACBLE) for heating and/or cooling as well as the corresponding curved ceiling panels (Fig. 30.1–3).

The primary air is supplied via nozzles, using induction to suck in secondary air through the air inlet grating and the heat exchanger, located in the unit. The escap-ing mixed air attaches itself to the ceiling, due to the Coanda effect, then disperses into the room and thus creates air circula-tion in the room.

Altstadtpalais MunichIn the Altstadtpalais in Munich, architects Auer + Weber/Munich applied ecologi-cal axioms in conjunction with Feng shui rules to install 434 active chilled beams with primary air connection in the ceil-ing, allowing a high level of flexibility with regard to how the room is used and furnished (Fig. 30.4–5).

30.4

30.1

30.2 30.3

30.5

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In Combination with Multi-function Covers and LEDs TTC covers are an ideal combinations of design and function. Available in a multi-tude of shapes ans materials they can be integrated into any type of architectural design. (Fig. 31.1–4).

Adding coloured direct or indirect illumina-tion can create different moods and thus increase peoples sense of well-being.

Being to set how much air will be dis-charged into the room means that a room’s requirements can be met exactly. All cov-ers can of course also be used to remove air from the room. Different functions such as heating/cooling and ventilation can be concentrated in a small space which reduces investment cost.

TTC ceiling covers are particulary suit-able for retrofitting in offices, depart-ment stores and showrooms. Their design ensures trouble-free installation in most commonly used standard panelled ceilings.Design: www.two-design.com

Wall/Ceiling InstallationActive chilled beams, model ACBLH, can be installed on the wall underneath the ceil-ing (Fig. 31.5–6).The primary air is injected via a nozzle system behind the heat exchanger where it uses induction to create a vacuum which sucks the warm room air into the heat exchanger. The room air is then mixed with the primary air in the mixing chamber and blown out again underneath the ceiling. Due to the Coanda effect the air stream attaches itself to the ceiling and thus achieves a high trajectory length and pen-etration depth. When in cooling mode, all condensate that may accumulate will be collected in a condensate tray from where it can be drained.

Applications:Offices and administrative buildingsShowroomsCafés, Restaurants, Pubs, etc.

31.5 Model ACBLH installed on wall/ceiling 31.6

31.2/3 Ceiling covers with integrated illumination 31.4 Ceiling covers, Design: two-design.com

31.1 Multifunctional ceiling covers with integrated illumination

TTC Timmler Technology

Developing innovative solutionsfor new buildings and redevelopment projectsin close co-operation with architects and plannersAssisting architects and planners to develop customized solutions during the planning phase is just one of the strengths of TTC Timmler Technology.TTC supplies intelligent buildings technology for contemporary residential and work environ-ments: LED lights, innovative air conditioning systems, design-oriented façade components and gratings for both interior and exterior applications. Our know-how and many years experience let you combine modern design, energy efficiency and economic viability. Whatever your technical requirements, we design customized solutions consisting of standard components or tailor-made components, produced to your specifications.

Kind to the environment and economically viablePeople and the environment are at the heart of TTC’s philosophy. We develop natural air conditioning systems that are both energy and cost efficient.

Multi-functionalityUse our know-how to enhance your designMulti-functionality is a particularly strong point of TTC buildings technology. To name just a few examples:

LED Lightdesign – • As with TTC gratings you can also use TTC Lighttools in our mainte-nance platforms to create a stunning illumination and to put your design into the »lime-light«. The options TTC Lightdesign is offering are as versatile as your ideas: From Façade space lights, Power LEDs, LED light lines and tiles to wall washers – with individual designs and a wide range of materials we can deliver customized solutions for your projects.

TTC Modultherm is the ideal system to noiseless air condition whole buildings cost •efficiently, using the natural force of gravity.

TTC Chilled Beams ensure an air conditioning with high comfort an very low noise in •working areas. In arrangement with the architect chilled beams add themselves into the design of the ceiling.

TTC Floorunits with different functionalities of heating, cooling and ventilation provide the •free view through space high glass façades. These products combine design with func-tionality an energy efficiency.

Homogeneous grating systems allow a seamless transition between the interior and the •exterior design of a building. On the inside TTC Under Floor systems provide solutions for all your heating, cooling and ventilation requirements and on the outside they comple-ment the TTC Façade Drainage systems.

Filigree sun protection systems on the façade provide openness and transparency.•

TTC Timmler Technology GmbH

Christian-Schäfer-Str. 8D-53881 FlamersheimTel +49 (0) 2255 921-0Fax +49 (0) 2255 [email protected]

ttc timmler · pdf filein writing from ttc timmler technology gmbh. · project...

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