stulz – the natural choice 1 free cooling...save energy & reduce your costs

STULZ – THE NATURAL CHOICE 1

Free Cooling

...save energy & reduce your costs


Regions of the world for Free Cooling


Dynamic Free cooling

...for your data centres and switches


Free cooling Retrofit principle for Shelters

Overpressure grills

STULZ Free AirFixation on the wall

Fresh air inletFrom the bottom side

Hot air outlet

Air inlet grill


Freecooling challenge

For BTS sites equipped with split comfort

Reduction of the operating cost

Total control of existing split comfort unit

Use the full potential of Energy-saving

Reduction of the Carbone footprint


Intelligent system and control

Existing Air con /ShelterExisting Air con /Shelter

IncludingRemote control on/off and alarms Add Free cooling BoxAdd Free cooling Box


STULZ Free Air : Description

One single frame (600x640x600 mm)

Cooling capacity until 6000W

Power supply = 48VDC

Electronic control

Control and management of comfort split

Variable speed control of EC fan:

1. Low noise emission

2. Reduction of power consumption

Main technical features

* With DT=10°C

Free cooling Box


Standard Intelligence

System intelligence includes:

Take over of the whole system control

through Microprocessor controller

Remote control on/off incl. alarms

Monitoring system

probes for monitoring split comfort (with

3,5MT cable)

screw terminals for digital inputs (on/off

split unit) and outputs (up to 9 alarms)

48VDC modulating FCB-fan

Airflow and clogged filter signal


Airflow automatically adjustable with outdoor temp

Power consumptions and Sound Pressure level on DT°

0,00

10,00

20,00

30,00

40,00

50,00

60,00

70,00

80,00

90,00

100,00

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

DT° (Inside/outside difference temperature)

Po

we

r c

on

su

mp

tio

ns

W

30

32

34

36

38

40

42

44

46

48

So

un

d P

res

su

re L

ev

el-

1 m

t.

Db

(A)

Power consumptions

Sound Pressure Level


Full potential of Energy Saving-7 -5 -3 -1 1 3 5 7 9

11 13 15 17 19 21 23 25 27 29 31 33 35 37

0

50

100

150

200

250

300

350

400

kWh

Freecooling Box ONLYFCB with SplitSplit Comfort ONLY

Frankfurt Temperature profileHeat Load = 3500WUsing FCB35 and Split Comfort data 80% Energy saving


Free cooling Conclusion

Save your Money

REDUCE COSTS

Use intelligent system

With FREE COOLING

Preserve your environment


Find STULZ ...

Italy

Germany

China

USA

Headquarter

… and its qualified and professional partners – worldwide.

Production Sites

India

Germany

stulz – the natural choice 1 free cooling...save energy & reduce your costs

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