TTC Timmler Technology TTC Active and Passive Chilled Beams ...

TTC Timmler Technology 

TTC Active and Passive Chilled Beams 

Planning Documentation 

for Engineers and Plant Contractors

Contents | Features 

Active TTC Chilled Beams 

2 

i 

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 

· White casing (coating similar to RAL 9010) 

· Length and width (592 x 592 mm) · 3 capacity levels 

· Height 225 mm, side supply air 

· 

connection 

Capacity at ∆m = 10 K, air volume flow 

· Air adjustment valve as standard 80 m³⁄h (4-sided air discharge); capacity 

· Air discharge on 4 sides, individually level 9 

adjustable 

Cooling capacity Q˙ K(tot) = 500 W 

· Recirculating air intake through 

perforated cover 

Sound pressure level < 25 dB (A) 

TTC Chilled Beam ACBLZ Pages 10–11 

· Installation preferably in panelled ceilings Capacity at ∆m = 10 K, air volume flow 

· Low height 146 mm, top or end supply 40 m³⁄h (2-sided air discharge); capacity 

air connection 

level 1, setting 5 

· Air adjustment valve as standard Cooling capacity Q˙ K(tot) = 500 W 

· Air discharge 2-sided 

Sound pressure level < 25 dB (A) for a 

· Power level adjustable via the air 

adjustment valve 


chilled beam length of 12 dm 

TTC Chilled Beam ACBLA Pages 12–13 

· Installation preferably underneath the · White casing (coating similar to RAL 9010) 

ceiling 

· Built-in air passage grill 

· 4 capacity levels 

· Length ≈ 1200/1800/2400 mm 


· Height 171 mm, Width 364 mm 

60 m³⁄h (2-sided air discharge); capacity 


level 8 


Cooling capacity q˙ K(spec) = 540 W/m 

· Supply air discharge on the side at the top Sound pressure level < 25 dB (A) for a 

· Supply air inlet on the end 


TTC Chilled Beam ACBLE Pages 14–17 

· Installation preferably in panelled ceilings 


· Length ≈ 1200/1800/2400 mm 

· Height 165 mm, Width 592 mm 



· Supply air discharge horizontally underneath 

the ceiling 






level 8 

Cooling capacity q˙ K(spec) = 540 W/m 



TTC Chilled Beam ACBLO Pages 18–19 

· Installation preferably in panelled ceilings · White casing (coating similar to RAL 9010) 

· Cover can be folded up or down 


· Length ≈ 1200/1800/2400 mm 


· Height 255 mm, width 595 mm 


· Recirculating air inlet at the top 

level 9 

· Supply air discharge horizontally under- Cooling capacity q˙ K(spec) = 835W/m 

neath the ceiling 




Subject to technical changes · Issued 10/2010

Subject to technical changes · Issued 10/2010 

Contents | Features 

Passive TTC Chilled Beams 

TTC Chilled Beam AECAK Pages 20–21 

· Installation underneath a ceiling 


· Length 10–40 dm in 5 dm-increments 

· Height 142 mm 

· Width 45/60 cm 


· Cool air discharge at the bottom 


Capacity at ∆m = 10 K 

Width 45 cm 

Capacity q˙ K(tot) = 275 W/m 

Width 60 cm 

Cooling capacity q˙ K(tot) = 415 W/m 

TTC Chilled Beam AECBK Pages 22–23 

· Installation underneath a ceiling 









Width 45 cm 


Width 60 cm 


TTC Chilled Beam AECBU Pages 24–25 

· Installation underneath a panelled ceiling 







· Casing made of galvanized steel plate 


Width 45 cm 


Width 60 cm 


TTC Chilled Beam AECEU Pages 26–27 

· Installation underneath a panelled ceiling Capacity at ∆m = 10 K 

· High performance chilled beam (ideal for Width 45 cm 

sound and TV studios) 


· Length 10–40 dm in 5 dm-increments Width 60 cm 






· 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 

· Project »Dexia Bank« 

· Project »Altstadtpalais« 

· Example Wall/Ceiling Installation 

· Combination with Multifunctional 

Ceiling Covers and LED Lights 

© 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. 

3

Order Key for Floor Units 

4 

Order Key for TTC Chilled Beams 

ACBLO 30 60 2 H 6 B 

Air discharge direction 

S = 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 

Power level 

Active Chilled Beams Passive Chilled Beams 

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 -- -- -- -- 

*Power level 6 on request 

Power Level 

Water supply connection 

H = Horizontal 

V = Vertical 

Pipe divisions 

1 (2, 3, 4 on request) 

Unit width Wtot[mm] 

36 = for depth 362 mm 

45 = for depth 455 mm 

60 = for depth 605 and 592 mm 

Unit length Ltot[mm] 


Type ACBLQ ACBLZ ACBLA ACBLE ACBLO AECAK AECBK AECBU AECEU 

Unit length Ltot[mm] 

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 

Models 


ACBLQ AECAK 

ACBLZ AECBK 

ACBLA AECBU 

ACBLE 

ACBLO 

AECEU 



Why air conditioning? 

The benefit of air conditioning 

Our thermal well-being depends on a num- 

ber 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 0 C. 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 neutral 

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, clothing 

and Type of activity performed we 

regulate our body heat through convection 

and radiation (sensible heat discharge) 

Performance drop [%] 

5.1 

Interior wall temperature [°C] 

5.2 

100 

90 

80 

70 

60 

50 

40 

30 

25 

21 

20 

16 

15 

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

Deviation from the ideal temperature [°C] 

t e = 21 0 C 

k = 0,5 W/m2•K 190C 

k = 1,0 W/m2•K 

k = 1,5 W/m2•K 

10 

10 15 20 23 25 30 

Deviation from the ideal temperature [°C] 

Comfort zone (Source: Paperback »Heizung und Klimatechnik«, 

by Recknagel, Sprenger & Höhnmann) 

t = Perceived temperature, t = Outdoor tempera- 

e a 

ture, k = Heat transfer rate of the walls 

• 

23°C 

ta = -10°C 

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. 

Heat discharge [W] 

5.3 

160 

140 

120 

100 

80 

60 

40 

20 

0 

Convection 

Evaporation 

Radiation 

10 14 18 22 26 30 34 38 

Air temperature [°C] 

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 supplied 

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 reduced 

to the legal requirement. This would 

result in a substantial reduction in the size 

of the ventilation system needed. 

»A min« minimum distances between active chilled beams arranged in parallel 

If several active chilled beams are to be arranged 

in parallel the units must be spaced 

a minimum distance »Amin« apart. 

To roughly calculate the distance between 

the units you can use the formula 

Amin = 1,4 · aL and Fig. 5.4. 

The diagram applies to the one-sided air 

discharge only; for two-sided air 

7 

discharge you will need to halve 

the air volume flow 

6 

VL(specif) when you determine the 

5 

Amin spacing. 

Example: 

Chilled beam with two-sided 

air discharge, 

VL(specif) = 47 (m³/h·m), 

required air flow rate in the room 

vL = 0,2 m 

Reference distance aL [m] 

4 

3 

2 

1,2 

1 

0 

l/(s·m) 

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 

connection 

· Passive 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 conditioning 

systems are accepted. 

aL = 47 m³/(h·m) · 0,5 = 23,5 m³/(h·m) 

equals: aL = 1,2 m 

The »Amin« spacing between the chilled 

beams can now be calculated as follows: 

Amin = aL[m] · 1,4 = 1,2 m · 1,4 = 1,68 m 

If there are very high thermal loads the 

parameter »Amin« can be reduced. 

v L = 0,2 m/s 

v L = 0,25 m/s 

5 6 7 8 9 10 11 12 13 14 15 16 

m 20 25 30 35 40 45 50 55 

3/(h·m) 

23,5 

Specific air volume flow 

5.4 5

Products in Use | Examples 

Cooling, Heating, Ventilation 

Fig. 6.1 shows an example how a room 

can be fully air conditioned – cooled, heated 

and ventilated – with TTC model ACBLE 

chilled beams and underfloor convectors 

for the heating mode. 

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 

6 

Heat transfer through people [W] 

· 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 

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 

[11] 

~ 

[1] [2] [AL] [3] [4] [5] [6] [12] 

Z Z Z 

[10] [9] 

U 

[8] 

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. 

tainted recirculating air (escaping air) 

U Warm recirculating air 

Z Outside and recirculating air that has 

been cooled in the chilled beam 

FL 

U 

 

~ 

• 

• 

• 

6.1 

[13] 

[7] 



Operation and Function 

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 

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 needed 

A zone can be controlled (sequential control) 

with the following components: 

· 1 off valve box (valve gate), suitable for 

the installation of an electrical actuator 

· 1 off valve box (three-way valve) for 

the zone mixing control, suitable for the 

installation of an electrical actuator 

· 2 off 24 V actuators (currentless, normally 

closed) 

· 1 off dew sensor 

· 1 off room thermostat 

· 1 off chilled beam controller, suitable for 

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 

Central unit with heat recovery (as an example) 

[11] 

[12] 

~ 

[13] 

[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 

[14] ~ 

[10] 

~ 

[9] 

[10] 

[9] 

~ 

[15] 

heating/cooling mode and the connection 

of a dew sensor 

· 1 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. 

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 

[8] 

[7] 

[6] 

[5] 

[9] 

~ 

~ 

~ 

RT 

 

Note! 

This diagram 

does not show 

the mandatory 

heaters. 

[1] 

[2] 

[3] 

[4] 

7

Cassette Chilled Beam ACBLQ 0660 (active) 

Specification | Capacity Charts 

8.1 

8 

Dimensions 

8.2 ACBLQ 0660 side view 

8.3 

8.2–8.3 

Air-sided pressure difference ∆pL [Pa] 

A 

D B 

1000 

700 

500 

400 

300 

200 

150 

100 

70 

50 

30 

20 

10 

C 

ACBLQ 

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 %). 

Air resistance, Sound pressure level*) 

Pressure drop [Pa], sound pressure level dB(A) 

Power level 7, 9 and 12 (100 % open) 

Level 7/4 

Level 9/4 

Level 12/4 

30 dB(A) 

40 dB(A) 

25 dB(A) 

30 

25 40 50 60 70 80 100 150 200 250 

8.4 Air volume flow VL [m³/h] 

35 dB(A) 

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 

700 

650 

600 

550 

500 

450 

400 

350 

300 

250 

200 

150 

100 

PL. 7 

Cooling capacity [W] Cooling capacity ACBLQ 0660 | Power level 7 

90 m3/h 

80 m3/h 

70 m3/h 

60 m3/h 

50 m3/h 

40 m3/h 

36 m3/h 

5 6 7 8 9 10 11 12 

8.5 Temperature difference ∆m [K] 

700 

650 

m3/h 

600 100 

550 

500 

450 

400 

350 

300 

250 

200 

PL. 9 


120 m3/h 

80 m3/h 

72 m3/h 

5 6 7 8 9 10 11 12 


600 

550 

500 

450 

400 

350 

300 

250 

200 

LPL 12 140 m3/h 


130 m3/h 

120 m3/h 

100 m3/h 

90 m3/h 

5 6 7 8 9 10 11 12 




Cassette Chilled Beam ACBLQ 0660 (active) 

Design Features | Installation Example 

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 additional 

air discharge points are required 

which in turn helps to optimize both the 

investment and the energy costs. The design 

allows for trouble-free installation in 

standard panelled ceilings which makes the 

unit suitable for a whole host of applications. 

The units can be installed flush in 

panelled ceilings. 

Air cooler 

The 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 2035 

· Maximum operating pressure 6 bar* 

· Maximum operating temperature 90°C* 

*Further installation options on request 

Connections 

The connecting pipes projects horizontally 

»H« from the casing. The copper connection 

pipes have a diameter of 15 mm. 

The connections are suitable for soldered 

joints, clamping joints and crimped connections. 

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 connector 

located at the side. 

An air adjustment to individually control 

the supply air volume flows on each air 

discharge side comes as standard. 

Options 

· ø 125 mm air inlet connector located at 

the side of the unit 

Applications 

Offices, open plan offices, administrative 

buildings, restaurants, showrooms, galleries, 

supermarkets, department stores, etc. 

Flush installation in panelled ceiling | Central recirculating air inlet 

[1] Panelled ceiling 

[2] Perforated cover 

to suck in recirculating air 

[U] Warm recirculating air 

[Z] Cooled supply air 

9.1 Installation example and function 

8 

7 

6 

5 

4 

3 

2 

1 

0 

kg/h 

kg/s 

10 

9 

Z 

ACBLQ 0660 

Water-sided pressure drop [kPa] Water-sided pressure drop* [∆pw] 

1 pipe division 

0 100 200 300 400 500 

0 0,05 0,10 0,15 

9.2 Water volume flow m˙ w [kg/h] 

* 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. 

Formula 1 to calculate the average 

temperature difference ∆m 

tW1 [°C] + tW2 [°C] 

∆m[K] = tR - 

2 

U 

Z 

[2] 

[1] 

Formula 4 to roughly estimate the water 

volume flow m˙ W 

Q · k(tot) [kW] 

m˙ W[kg/h] = 860 · 

tW2 - tW1 [K] 

9

Chilled Beam ACBLZ (active) 


10.1 

Dimensions 

10.2 

10 

AL 

56 

146 186 203 

297 

≈50 9x60 

594 

1260 

Technical data | Weights 

10.3 

10 

9 

8 

7 

6 

5 

4 

3 

2 

1 

∅15 ∅100 

alternative supply air connection 

Type L(tot) 

[mm] 

ACBLZ 

1 Rohrteilung 

Water-sided pressure drop [kPa/m] Water-sided pressure difference [∆pw] 

L(finned) 

[mm] 

∅15 

130 

146 

200 

0 

kg/h 0 50 100 150 200 250 300 350 

kg/s 0 0,05 0,10 

10.4 Water volume flow m˙ W [kg/h] 

Water-sided 


Weight 

[kg] 

ACBLZ 1260 1193 1000 24 

Cooling capacity [W] 

Capacity charts 2-sided air discharge 

Specif. cooling capacity ACBLZ 1260.1.2 

Air adjustment valve in position 0 

700 

600 

500 

400 

300 

200 

ACBLZ / 0 

60 m3/h 

40 m3/h 

20 m3/h 

100 

50 

5 6 7 8 9 10 11 12 

10.5 

Temperature difference ∆m [K] 



600 

500 

400 

300 

200 

ACBLZ / 5 

60 m3/h 

40 m3/h 

20 m3/h 

100 

50 

5 6 7 8 9 10 11 12 

10.6 




10.7 

600 

500 

400 

300 

200 

100 

50 

1000 

500 

300 

200 

100 

50 

40 

m3/h 

ACBLZ / 10 

60 m3/h 

40 m3/h 

20 m3/h 

5 6 7 8 9 10 11 12 


Position 0 

Position 5 

Position 10 

30 dB(A) 

40 dB(A) 

25 dB(A) 

Air-sided pressure difference ∆pL [Pa] Air resistance | Sound pressure level*) 

10.8 

35 dB(A) 

20 25 30 40 50 60 80 100 130 

Air volume flow vL [m³/h] 



Chilled Beams ACBLZ (active) 


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 cooler 




pipes are bonded together. 




· Maximum operating pressure 6 bar 

· Maximum operating temperature 90°C 

Connections 

The 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. 

Casing 



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 attached 

to these rails. 

Options 

· Integrated light fixture 

Installation notes 

If the chilled beams are to be arranged in 

parallel the installation requirements illustrated 

in Fig. 11.2 must be complied with 

to ensure a trouble-free operation. 

Applications 


buildings, restaurants, showrooms, sound 

and TV studios, supermarkets, department 

stores, etc. 

Flush installation in panelled ceiling 

Z 

U 

[U] Warm recirculating air entering the ch. b. 

[Z] Cooled recirculating and supply air leaving the ch. b. 

[AL] Centrally conditioned outside air 


»Amin« minimum distances between chilled beams arranged in parallel 

2-sided air discharge 

11.2 

U 

Model ACBLZ chilled beams are installed in panelled ceilings only. 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. 11.2 must be observed. 

Supply air channel 

Amin.≥ 0,7 · aL B 

Amin.≥ 1,4 · aL *) B Amin.≥ 0,7 · aL 

*)aL = Reference spacing (see page 5) 

[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. 



tW1 [°C] + tW2 [°C] 

∆m[K] = tR - 

2 

Z 

AL 

Q · Formula 4 to roughly estimate the water 


K(tot) [kW] 

m˙ W[kg/h] = 860 · 

tW2 - tW1 [K] 

11

Chilled Beam ACBLA (active) 


12.1 

Dimensions 

12 

Water-sided 


AL 

12.2 

86 

50 

41 

∅15 

30 

182 


12.3 

8 

7 

6 

186 

L(ges.) 

Type L(tot) 

[mm] 

ACBLA 36 

∅15 ∅125 

364 

159 

171 

9x60 

170 

5 

4 

3 

2 

1 

0 

kg/h 0 50 100 150 200 250 300 350 400 450 

kg/s 

0 0,05 0,10 0,13 

Water-sided pressure difference [kPa/m] Water-sided pressure difference [∆pw] 


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 

Capacity Charts 2-sided air discharge 

Specif. cooling capacity [q˙ K(spez)] ACBLA __36 

12.5 

12.6 

12.7 

800 

700 

600 

500 

400 

300 

Cooling capacity [W/m] Power level 7 

200 

100 

50 

700 

600 

500 

400 

300 

200 


100 

50 

600 

500 

400 

300 

200 


100 

50 

500 

400 

300 

200 

PL. / 8 

60 m3/h·m 

40 m3/h·m 

20 m3/h·m 

5 6 7 8 9 10 11 12 


PL. / 9 

60 m3/h·m 

40 m3/h·m 

20 m3/h·m 

5 6 7 8 9 10 11 12 


PL. / 12 

60 m3/h·m 

40 m3/h·m 

20 m3/h·m 

100 

50 

5 6 7 8 9 10 11 12 



PL. / 7 

60 m3/h·m 

40 m3/h·m 

20 m3/h·m 

5 6 7 8 9 10 11 12 




Chilled Beam ACBLA (active) 


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. Installation 

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. 

Air cooler 










Connections 

The chilled beams will be supplied with 

»H« (horizontal) connection pipes only. The 

connection pipes average diameter is 






Casing 










Options 

· Available unit lengths: 12–36 dm in 6 dm 

increments 


Model ACBLA chilled beams are always 

installed directly underneath the ceiling. 





Applications 




stores, etc. 

Installation underneath a ceiling 


Z 




Z 

U 

AL 

Model ACBLA chilled beams are always installed underneath a ceiling. An additional air 

passage grill is not required. 



»Amin« Minimum distances between chilled beams arranged in parallel 


13.2 

Amin 0,7 · aL B 

Amin 1,4 · aL *) B Amin 0,7 · aL 





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. 



tW1 [°C] + tW2 [°C] 

∆m[K] = tR - 

2 

Z 

U 

U 

Z 



q˙ (spezif) [kW/m] · L(finned)[m] 

m˙ W[kg/h] = 860 · 

tW2 - tW1 [K] 

Z 

Z 

13

Chilled Beam ACBLE (active) 


14.1 

Dimensions 

14.2 

14 

135 

332,9 7,6 


14.3 

8 

7 

6 

350 

350 

439,14 

592 

1054,9 

1192 

Type L(tot) 

[mm] 

ACBLE 60 


5 

4 

3 

2 

1 

0 

kg/h 0 50 100 150 200 250 300 350 400 450 

kg/s 

0 0,05 0,10 0,13 

Water-sided pressure difference [kPa/m] Water-sided pressure difference [∆pw] 


L(finned) 

[mm] 

165 

ø98 

Weight 

[kg] 

ACBLE 1260 1193 1000 40 

ACBLE 1860 1793 1600 60 

ACBLE 2460 2393 2200 80 

ACBLE 3060 2993 2800 100 



Specif. cooling capacity [q˙ k(spez)] ACBLE __60 

800 

700 

600 

500 

400 

300 

200 

100 

50 

5 6 7 8 9 10 11 12 


700 

600 

500 

400 

300 

200 


PL. / 8 

60 m3/h·m 

40 m3/h·m 

20 m3/h·m 

100 

50 

5 6 7 8 9 10 11 12 


600 

500 

400 

300 

200 


PL. / 9 

60 m3/h·m 

40 m3/h·m 

20 m3/h·m 

100 

50 

5 6 7 8 9 10 11 12 


500 

400 

300 

200 

PL. / 12 

60 m3/h·m 

40 m3/h·m 

20 m3/h·m 

100 

50 

5 6 7 8 9 10 11 12 



PL. / 7 

60 m3/h·m 

40 m3/h·m 

20 m3/h·m 



Chilled Beam ACBLE (active) 


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 regarding 

the ventilation of a room. Installation 

of the units is in panelled ceilings. An 

additional air passage grill is not required. 



Air cooler 










Connections 

The chilled beams can be ordered with »H« 

(horizontal) or »V« (vertical) connection 

pipes only. The connection pipes average 

diameter is 






Casing 










Options 

· Available unit lengths: 12–36 dm in 6 dm 

increments 






Applications 




stores, etc. 

Installation in panelled ceiling 

U 





Z 

AL 

U 

Model ACBLE chilled beams are always installed flush in panelled ceilings. An additional 

air passage grill is not required. 



Note! 

Other installation options on request. 

Z 

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


15.2 

B B 

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





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. 


volume flow m˙ w 

q˙ k(spezif) [kW/m] · L(finned)[m] 

m˙ W[kg/h] = 860 · 

(tW2 - tW1) [K] 

Supply air channel 

Z 

15

Chilled Beam ACBLA/ACBLE (active) 

Specification | Capacity Charts for 1-sided Air Discharge 

Cooling capacity [W/m] 

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

Power level 8 

16.1 

16.2 

16 

700 

600 

500 

400 

300 

200 

100 

50 

600 

500 

400 

300 

200 


16.3 

100 

50 

500 

400 

300 

200 

100 

50 


PL. / 8 

5 6 7 8 9 10 11 12 

PL. / 9 



60 m3/h·m 

40 m3/h·m 

20 m3/h·m 

60 m3/h·m 

40 m3/h·m 

20 m3/h·m 

5 6 7 8 9 10 11 12 

PL. / 12 

60 m3/h·m 

40 m3/h·m 

20 m3/h·m 

5 6 7 8 9 10 11 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 

ACBLA 1236 

ACBLE 1260 

16.4 

ACBLA 1836 

ACBLE 1860 

16.5 

ACBLA 2436 

ACBLE 2460 

16.6 

ACBLA 3036 

ACBLE 3060 

16.7 

Air pressure drop ∆pL [Pa] 


Air resistance ∆pL [Pa] 


1000 

500 

300 

200 

150 

100 

50 

ACBLA/E 12 dm 

Level 8 

Level 9 

Level 12 

25 dB(A) 

40 dB(A) 

35 dB(A) 

30 dB(A) 

30 

20 

m3/h 20 30 40 60 80 100 

Air volume flow V 

200 

· L 

1000 

500 

300 

200 

150 

100 

50 

ACBLA/E 18 dm 

Level 8 

Level 9 

25 dB(A) 

Air volume flow V · 30 

20 

m3/h 20 30 40 60 80 100 

L 

200 

700 

500 

300 

200 

150 

100 

50 

Level 12 

ACBLA/E 24 dm 

30 dB(A) 

35 dB(A) 

40 dB(A) 

30 

20 

15 

m3/h 30 40 60 80 100 


200 

· L 

700 

500 

300 

200 

150 

100 

50 

Level 8 

Level 9 

Level 8-1 

25 dB(A) 

Level 9-1 

ACBLA/E 30 dm 

40 dB(A) 

35 dB(A) 

30 dB(A) 

Level 12-1 

30 

20 

15 

m3/h 25 30 40 60 80 100 200 

Air volume flow V · L 

Level 12 



Chilled Beam ACBLA/ACBLE (active) 

Air Resistance and Sound Pressure Level for 2-sided Air Discharge 

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

ACBLA 1236 

ACBLE 1260 

17.1 

ACBLA 1836 

ACBLE 1860 

17.2 

ACBLA 2436 

ACBLE 2460 

17.3 

ACBLA 3036 

ACBLE 3060 

17.4 



AIr pressure drop ∆pL [Pa] 


1000 

500 

300 

200 

150 

100 

50 

ACBLA/E 12 dm 

Level 7 

Level 8 

40 dB[A] 

35 dB[A] 

30 dB[A] 

25 dB[A] 

30 

20 

15 

m3/h 20 30 40 60 80 100 


200 

· L 

1000 

500 

300 

200 

150 

100 

50 

Level 9 

Level 7 

Level 12 

ACBLA/E 18 dm 

40 dB[A] 

35 dB[A] 

30 dB[A] 

25 dB[A] 

Level 8 

Air volume flow V · 30 

20 

15 

m3/h 20 30 40 60 80 100 

L 

200 

1000 

500 

200 

100 

50 

30 

20 

10 

ACBLA/E 24 dm 

Level 7 

Level 8 

Level 9 

Level 9 

Level 12 

40 dB[A] 

35 dB[A] 

Level 12 

30 dB[A] 

25 dB[A] 

5 

m3/h 20 30 40 60 80 100 


200 

· L 

1000 

500 

200 

100 

50 

30 

20 

10 

5 

ACBLA/E 30 dm 

25 dB[A] 

Level 7 

Level 8 

Level 9 

40 dB[A] 

35 dB[A] 

Level 12 

30 dB[A] 

m3/h 20 30 40 60 80 100 200 

Air volume flow V · L 

Formulas for calculation 

Formula 1 

Calculating the average temperature difference ∆m 

tW1 [°C] + tW2 [°C] 

∆m[K] = tR - 

2 

Formula 3 

Calculating the total cooling capacity Q˙ Ktot (1 unit) 

Q · K(tot)[kW] = q ˙K(specif)[W/m] · L(finned)[m] 

Formula 4 

Estimating roughly the water volume flow m˙ w 


m˙ W[kg/h] = 860 · 

tW2 - tW1 [K] 

Formula 5 

Calculating the total water-sided pressure drop (1 unit) 

∆pW(tot)[kPa] = ∆qW(specif)[W/m] · L(finned)[m] 

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. 

17

Chilled Beam ACBLO (active) 


18.1 

Dimensions 

18.2 

18 

ø15 

ø125 

405 

202 

39 

39 

296,5 


18.3 

Type 

L(tot) 

[mm] 

602 

525 

L(ges.) 

L(berippt) 

L(finned) 

[mm] 

60 x 9 

Weight 

[kg] 

20 

235 

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 



1200 

1100 

1000 

900 

800 

700 

600 

500 

400 

300 

200 

PL. / 6 

5 6 7 8 9 10 11 12 


1200 

1100 PL. / 9 

1000 

900 

800 

700 

600 

500 

400 

300 

200 

• 

5 6 7 8 9 10 11 12 



1400 

1300 

1200 

1100 

1000 

900 

800 

700 

600 

550 

500 

400 


PL. / 12 

66 m3/(h·m) 

65 m3/(h·m) 

108 m3/(h·m) 

50 m3/(h·m) 

36 m3/(h·m) 

86 m3/(h·m) 

65 m3/(h·m) 

5 6 7 8 9 10 11 12 


40 m3/(h·m) 

36 m3/(h·m) 

29 m3/(h·m) 

22 m3/(h·m) 



Chilled Beam ACBLO (active) 


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. 

Air cooler 








· Maximum operating pressure 6 bar* 

· Maximum operating temperature 90°C* 

*Other installation options on request. 

Connections 




diameter is 



The supply air connection (ø 100 mm) is located 

at the end of the unit. (see page 18). 

Casing 



The recirculating air inlet cover can be 

removed for maintenance purposes. For 

dimensions see Fig. 18.2. 





Options 

· Available unit lengths: 12–36 dm in 

6 dm increments 

· 1- and 2-sided air discharge 


The 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. 

Applications 




stores, etc. 

Installation in a panelled ceiling 

Sb 

U 


Z 

AL 

SL 




[SL] Recirculating air induced by the supply air flow 

Model ACBLO chilled beams are always installed flush in panelled ceilings. 



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. 



19.2 

Sb Sb 

Dmin 

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



[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 

Z 

Z 

U 

19

Chilled Beam AECAK (passive) 


20.1 

Dimensions 

20.2 

20 

255 

9x60 

375 

453 

525 

405 

9x60 

603 


20.3 

L(tot) 

[mm] 

L(finned) 

[mm] 

Chilled 

beam 

witdh B 

[mm] 

40 

39 

142 

Distance to 

the ceiling 

Dmin 

[mm] 

142 

39 

Mounting brackets 

Up to 2,4 m 2 off 

from 2,5 m 3 off 

Connections 


ø 15; 150 mm long 

Water 

content 

[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 

550 

500 

450 

400 

AECAK 

Unit width 60 

350 

300 

250 

200 

150 

100 

50 

0 

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


Specif. cooling capacity [W/m] Specific cooling capacity [q ˙ K(spez)] 

20.5 

8 

7 

6 

5 

4 

3 

2 

1 

0 

kg/h 

kg/s 

AECBK 45 

AECBK 60 

Specif. pressure drop [kPa/m] Specific pressure drop [∆pw] 

Unit width 45 

0 100 200 300 400 500 600 700 800 900 

0 0,05 0,10 0,15 0,20 0,25 


Water volume flow m˙ w [kg/h] 

Formula 1 


tW1 [°C] + tW2 [°C] 

∆m[K] = tR - 

2 

Formula 3 



Formula 4 



m˙ W[kg/h] = 860 · 

tW2 - tW1 [K] 

Formula 5 



∆m[K] = Average temperature difference between two different media 

tR [°C] = Room temperature 

tW1 [°C] = Water inlet temperature 

tW2 [°C] = Water outlet temperature 

m · W[kg/h] = Water volume flow 

Q · 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 



Chilled Beam AECAK (passive) 


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. 



Air cooler 








· Finned length of the chilled beam Lfinned, 

see Fig. 20.3 



Connections 




diameter is 


Casing 



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. 

Options 

· integrated lighting fixtures 

· integrated smoke detectors 







Applications 




stores, etc. 

Installation underneath a ceiling in plain view 


Z 

Model AECAK chilled beams are installed in plain view underneath a ceiling. An additional 




a 


21.2 

U 


[Z] Cooled recirculating air floating down 

Dmin 

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


[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 

Note! 

Please refer to the Order Key on page 4. 

Z 

U 

Z 

U 

21

Chilled Beam AECBK (passive) 


22.1 

Dimensions 

22.2 


22.3 

22 

L(tot) 

[mm] 

255 

9 x 60 

375 

453 

525 

605 

L(finned) 

[mm] 

405 

9 x 60 


beam 

width B 

[mm] 

40 

156 

Distance to 

the ceiling 

Dmin 

[mm] 

156 

39 




Connections 


ø 15; 150 mm long 

Water 

content 

Note! Design example for passive chilled beams page 28. 

[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 

550 

500 

450 

400 

AECBK 

350 

300 

250 

200 

150 

100 

50 

0 

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



22.5 

8 

7 

6 

5 

4 

3 

2 

1 

0 

kg/h 

kg/s 

AECBK 45 

AECBK 60 


Unit width 60 

Unit width 45 

0 100 200 300 400 500 600 700 800 900 

0 0,05 0,10 0,15 0,20 0,25 



Formula 1 


tW1 [°C] + tW2 [°C] 

∆m[K] = tR - 

2 

Formula 3 



Formula 4 



m˙ W[kg/h] = 860 · 

tW2 - tW1 [K] 

Formula 5 















Chilled Beam AECBK (passive) 


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. 



Air cooler 









see Fig. 20.3 



Connections 




diameter is 


Casing 





see Fig. 22.3. 




these rails. 

White special fins protect the interior of 

the chilled beam. 

Options 

· integrated lighting fixtures 

· integrated smoke detectors 







Applications 




stores, etc. 

Installation underneath a ceiling in plain view 


Z 

Model AECBK chilled beams are installed in plain view underneath a ceiling. An additional 





23.2 

U 


[Z] Cooled recirculating air floating down 

Dmin 

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


[Amin] Minimum distance between a chilled beam and a wall 



Note! 


Z 

U 

Z 

U 

23

Chilled Beam AECBU (passive) 


24.1 

Dimensions 

24.2 

24 

255 

9x60 

375 

455 

405 

9x60 

525 

605 


24.3 

L(tot) 

[mm] 

L(finned) 

[mm] 


beam 

width B 

[mm] 

40 

122 

Distance to 

the ceiling 

Dmin 

[mm] 

122 

39 




Connections 


ø 15; 150 mm long 

Water 

content 


[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 

550 

500 

450 

400 

350 

300 

270 

250 

200 

180 

150 

100 

50 

AECBU 


Unit width 60 

Unit width 45 

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


24.5 

8 

7 

6 

5 

4 

3 

2 

1,9 

1 

0 

• 

kg/h 0 100 200267300 400 500 600 700 800 900 

kg/s 

AECBU 


Unit width 60 

0 0,05 0,10 0,15 0,20 0,25 


• 

• 

Unit width 45 


Formula 1 


tW1 [°C] + tW2 [°C] 

∆m[K] = tR - 

2 

Formula 3 



Formula 4 



m˙ W[kg/h] = 860 · 

tW2 - tW1 [K] 

Formula 5 















Chilled Beam AECBU (passive) 


Design features for model AECBU 

Model AECBU chilled beams are preferably 

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. 



Air cooler 









see Fig. 20.3 



Connections 




diameter is 


Casing 

The casing is made of coated steel plate. 





these rails. 







Applications 




stores, etc. 

Note! 


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

Sb 

U 


Z 


[2] Air passage grill 


[Z] Cooled recirculating air leaving the ch. b. 


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. 



Other installation options on request. 


Dmin 

Sb Sb 

A ≥ 0,5 · B B A ≥ 1,4 · B 

B A ≥ 0,5 · B 

25.3 


[Amin] Minimum distance between two chilled beams or between a chilled beam and a wall 



25 

Z 

U 

[2][1] 

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

U 



[3] Air intake grill 



Z 

U 

Z 

Z 

[2] [3] [1]

Chilled Beam AECEU (passive) 


26.1 

Dimensions 

26.2 

26 

255 

9x60 

455 

405 

9x60 

605 

39 

187 

187 

39 

700 

650 

600 

550 

500 

450 

400 

350 

300 

250 

200 

150 

100 

50 

AECEU 


Unit width 60 

Unit width 45 

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


26.5 

10 

9 

8 

7 

6 

5 

4 

3 

2 

1 

0 

kg/h 

kg/s 

AECEU 

Specif. pressure drop [kPa/m] Specif. pressure drop [∆pw] 

Technical data | Weights Formulas for calculation 

26.3 

L(tot) 

[mm] 

L(finned) 

[mm] 


beam 

width B 

[mm] 

Distance to 

the ceiling 

Dmin 

[mm] 




Connections 


ø 15; 150 mm long 

Water 

content 


[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 

Unit width 60 

Unit width 45 

0 100 200 300 400 500 600 700 800 900 

0 0,05 0,10 0,15 0,20 0,25 


Formula 1 


tW1 [°C] + tW2 [°C] 

∆m[K] = tR - 

2 

Formula 3 



Formula 4 



m˙ W[kg/h] = 860 · 

tW2 - tW1 [K] 

Formula 5 















Chilled Beam AECEU (passive) 


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 cooling 

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 recommended 

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 application. 

Air cooler 










Connections 




diameter is 


Casing 

The casing is made of coated steel plate. 



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. 







Applications 




stores, etc. 

Note! 


Installation in panelled ceiling | Air intake through 1 grill 






Z 

Installation in panelled ceiling | Air intake through air gaps 



[4] Air gaps 

U 




Model AECEU chilled beams are installed preferably in a panelled ceiling [1]. An air passage 

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. 



»Amin« Mindestabstände bei parallel angeordneten Chilled Beamen 

Dmin 

Sb Sb 

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

27.3 


[Amin] Minimum distance between two chilled beams or between a chilled beam and a wall 



Z 

U 

U 

[2] [3] [1] 

Z 

Z 

U 

[2] [4] [1] 

U 

27

Design Example 

Passive Chilled Beam | Example model AECBU 

28 

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 > 

The Task 

An office with a sensible cooling load of Q · K(sen) = 1.200 W is to be cooled using two passive 

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: tW1 

= 17°C and tW2 = 19°C 

· Room temperature: tR 

= 26°C 

· Supply air temperature: tL(ZU) 

= 18°C 

· Max. 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 

(tW1 + tW2)°C 

∆m[K] = tR - = 26 - 

2 

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 } Note! For people to feel comfortable a specific cooling power of 

250 W/m should not be exceeded in rooms used as offices. 

3. Calculate the required finned length of the chilled beams 

· a) (Unit width 45) L(finned) 

= Q · K(sen)[W]: q · K(specif)[W/m] = 600 W : 180 W/m ≈ 3,33 m 

· b) (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 drop 

5. Rough calculation of the water volume flow using formula 4 

m˙ W[kg/h] = 860 · 

17°C + 19°C 

2 


tW2 - tW1 [K] 

6. Calculate the total water-sided pressure drop using formula 5 

· Fig. 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 capacity 

7. The additional cooling capacity provided through the required supply air supply at 

240 m³/h is calculated as follows: 

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 Documentation) 

= 8 K 

0,27 kW/m · 2,3 m 

= 860 · = 267 kg/h 

2 K 

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

Q 

3600 

· K(air)[kW] = = 0,64 kW 


Subject to to technical changes · · Issued Issued 10/2010 

Mollier h,x-Diagramm 

45 

40 

35 

30 

t L [°C] 

25 

20 

15 

10 

5 

0 

- 5 

-10 

-15 

1,15 density in kg/m 3 

1,20 

1,25 

1,30 

1,35 

-10 

-5 

2 

0 

3 

5 

10 

4 

0,1 

15 

5 

20 

Mollier h,x-Diagramm 

Barometer reading 1013 mb 

6 

25 

7 

0,2 

Comfort zone 

30 

8 

35 

9 

10 

40 

11 

0,3 

45 

12 

50 

0,4 

0,5 

Enthalpy in kJ/kg 

13 

0,6 

relative humidity = 0,8 

14 

55 

15 

60 

Quantity of moisture x in g/kg of dry air 

-500 

0 

in kJ/kg 

dh 

dx 

500 

4200 

1000 

0,7 

16 

4000 

3500 

1500 

0,9 

65 

17 

3000 

2500 

2000 

1 

18 

29


Dexia Bank, Luxemburg 

Architect Claude Vasconi 

For 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 escaping 

mixed air attaches itself to the ceiling, 

due to the Coanda effect, then disperses 

into the room and thus creates air circulation 

in the room. 

Altstadtpalais Munich 

In the Altstadtpalais in Munich, architects 

Auer + Weber/Munich applied ecological 

axioms in conjunction with Feng shui 

rules to install 434 active chilled beams 

with primary air connection in the ceiling, 

allowing a high level of flexibility 

with regard to how the room is used and 

furnished (Fig. 30.4–5). 

30.4 

30 

30.1 

30.2 30.3 

30.5 




In Combination with Multifunction 

Covers and LEDs 

TTC covers are an ideal combinations of 

design and function. Available in a multitude 

of shapes ans materials they can be 

integrated into any type of architectural 

design. (Fig. 31.1–4). 

Adding coloured direct or indirect illumination 

can create different moods and thus 

increase peoples sense of well-being. 

Being to set how much air will be discharged 

into the room means that a room’s 

requirements can be met exactly. All covers 

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 suitable 

for retrofitting in offices, department 

stores and showrooms. Their design 

ensures trouble-free installation in most 

commonly used standard panelled ceilings. 

Design: www.two-design.com 

Wall/Ceiling Installation 

Active chilled beams, model ACBLH, can be 

installed on the wall underneath the ceiling 

(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 penetration 

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 buildings 

Showrooms 

Cafés, Restaurants, Pubs, etc. 

31.1 Multifunctional ceiling covers with integrated illumination 

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

31.5 Model ACBLH installed on wall/ceiling 31.6 

31

TTC Timmler Technology 

Developing innovative solutions 

for new buildings and redevelopment projects 

in close co-operation with architects and planners 

Assisting 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 environments: 

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 viable 

People 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-functionality 

Use our know-how to enhance your design 

Multi-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 maintenance 

platforms to create a stunning illumination and to put your design into the »limelight«. 

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 functionality 

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 complement 

the TTC Façade Drainage systems. 

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

TTC Timmler Technology GmbH 

Christian-Schäfer-Str. 8 

D-53881 Flamersheim 

Tel +49 (0) 2255 921-0 

Fax +49 (0) 2255 921-500 

info@ttc-technology.eu 

www.ttc-technology.eu

TTC Timmler Technology TTC Active and Passive Chilled Beams ...

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