Liebert HPC-S 022 - Efficiency and Energy Saving

Features and Benefits
1--2
Liebert HPC---S 006---022---PD---273571---01.03.2012
In the ”G” version chiller, the characteristi cs of the ”EC” fans can achieve significant noise reductions
according their speed (RPM), as shown in the chart below.
84
86
88
90
92
94
96
98
100
500 550 600 650 700 750 800 850 900 950 1000
FG0 014 chiller (with CJ) PWL noise emission
EC fans RPM
dB(A)
Unequalled Efficiency and Energy Saving
The use of hermetic Scroll compressors of the latest generation; plate heat exchanger evaporators selec-
ted for R410A application; aerodynamic profiled blade fans with high efficiency nozzles; large surface
condenser coils ensure the achievement of unequalled efficiency figures.
Freecooling Module
The “Freeco o l ing” execution allows L i e b e r t H P C --- S 0 0 6 --- 0 2 2 to take advantage of low outdoor air tem-
peratures in the water cooling process in order to save energy, by avoiding co mpressors running.
A three---way valve arrangement permits the coo l ant to be diverted via the additional heat exchangers
before being fed into the cooling evaporator.
This means that even if the outside ambient temperature is not low enough to provide the completecool-
ing load, a significant contribution to the running costsof the system can be made whenever the ambient
temperatures falls below the coolant inlet temperature.
Reduced space requirements in comparison with a conventional chiller plus a dry ---cooler, are obtained
through the “Freecooling” execution’s compact design and the reduction of the compressors working
hours offers exceptional saving both in the long and short term.
The different strategies adopted by the proprietary microprocessor control in managing the various com-
ponents, fans --- compressors --- regulation valves, and operat i ng modes, mechanical and/or free cool-
ing, together with the compressors’ partialisation ensure typical energy savings greater than 30%.
8,000
7,000
6,000
5,000
4,000
3,000
2,000
1,000
0
-6-4-202468101214161820222426283032
Outdoor temperature (
o
C)
Annual Power consumption (kWh)
VENICE HAMBURG
8,000
7,000
6,000
5,000
4,000
3,000
2,000
1,000
0
Outdoor temperature (
o
C)
Annual Emergency consumption (kWh)
-18-16-14-12-10-8-6-4-202468101214161820222426283032
Annual energy consumption, Chiller.
Annual energy consumption, Chill e r plus Freecooling module.