1. BCWC
Water-cooled water chillers with centrifugal compressor/s
300 – 1250kW

2. Water-cooled water chillers with centrifugal compressor/s
Technical cooling: efficiency & reliability … and extreme solutions
Extreme solutions in terms of:
Energy savings
Noise levels
Limited available power supply
Weight
Technical
Cooling
Technological
High Perf
C.C.
Process
cooling

3. Attracting perfection.
BCWC units use "oil-free" revolutionary technology.
Optimum efficiency at all load conditions
Maximum reliability
Minimum maintenance
Reduced dimensions and weights
Ultra silent operation

4. Water cooled units with centrifugal compressors
Water cooled range
Water cooled units with centrifugal compressors
Water cooled units with screw compressors
300
500
700
900
1100
1300
[kW]
BRWC
BCWC

6. Main Features Between 1 and 4 “oil-free” centrifugal compressors
Single refrigerant circuit
Flooded evaporator
Shell & tube condenser
Electronic expansion valve
R134a refrigerant

7. BWCW0320A cooling capacity: 320kW compressor/s: 1 circuit:1 300 500
700
900
1100
1300
[kW]

8. BWCW0630A cooling capacity: 630kW compressor/s: 2 circuit:1 300 500
700
900
1100
1300
[kW]

9. BWCW0950A cooling capacity: 950kW compressor/s: 3 circuit:1 300 500
700
900
1100
1300
[kW]

10. BWCW1250A cooling capacity: 1250kW compressor/s: 4 circuit:1 300 500
700
900
1100
1300
[kW]

12. Magnetic force. BCWC units use "oil-free" revolutionary technology.
The impellers operate within a magnetic toroidal field, avoiding mechanical friction. BCWC units are the ideal choice for:
Optimum efficiency at all load conditions
Maximum reliability
Minimum maintenance
Reduced dimensions and weights
Ultra silent operation

13. Oli-free centrifugal compressor
2 stages of centrifugal compression
Speed Control with inverter
Temperature and pressure sensors
DC/DC brushless synchronised motor
IGV
Control of the motor and magnetic bearings

14. Refrigerant flow

15. Gas compression

16. Top level performance.
An “Oil-free centrifugal compressor is an inverter-driven compressor which only uses the IGV in extreme conditions.
BCWC units are able to adapt the cooling capacity to the load with extreme precision.
The T at the set-point is ±0,2°C(*)
(*)with load higher that min load
Time
Delta T
BCWC
BRWC
Traditional

17. Top level performance. 2 4 6 8 10 12
25%
50%
75%
100%
Load [%]
EER
BCWC - 630kW
BRWC - 630kW
BCWC units are able to adapt the cooling capacity of the compressor to the load extremely efficiently.
The IPLV and ESEER show that the BCWC efficiency is optimized in all operating conditions.

18. Top level performance. -39% -38% -48% 0,0 10.000,0 20.000,0 30.000,0
40.000,0
50.000,0
60.000,0
70.000,0
80.000,0
90.000,0 ,0
320
650
950
1250
Cooling capacity [kW]
Running cost [€/year]
-100%
-90%
-80%
-70%
-60%
-50%
-40%
-30%
-20%
-10% 0%
''oil-free'' compressor chillers
Screw compressor chillers
% Energy saving

19. Top level performance. BCWC units have an integrated soft start.
Current [A]
Top level performance.
BCWC units have an integrated soft start.
This means a very low starting current:
320 kW  < 2A
650 kW  < 75A
950 kW  <140A
1250 kW  < 205A
Current [A]
Time
SCR Switch-on
Time

20. “Oil-free”. "Oil-free" means less cost!
Reduced energy losses in the heat exchangers
Compressors in parallel: optimum performance at partial loads
Flooded evaporator: higher energy efficiency
No oil changes or filter replacements: low maintenance costs
No maintenance of the bearings: low maintenance costs

21. Flooded Evaporator.
"Oil-free" means using flooded evaporator technology without limits.
• Increased energy efficiency:
 exchange coefficient
 ΔT (water/refrigerant)
• Reduced energy losses
NO superheating
 decreased pressure drops
• Precise water temperature control
“accumulation” effect of refrigerant inside the evaporator

22. Cooling with style. Lack of “physical” contact means high reliability
increased energy savings.
Wear and energy losses due to friction are eradicated.

23. Reduced dimensions.
1000
2000
3000
4000
5000
6000
330
630
950
1250
Models [kW]
Weight [Kg]
BCWC
BRWC
The BCWC unit is lighter and more compact than any other compressor
with the same capacity featuring traditional technology.

24. Low noise. Extremely low noise levels Extremely flat spectrum
Absence of vibrations 40 50 60 70 80 90
100
330
630
950
1250
Frequency [Hz]
Noise power level
BCWC
BRWC
BRWC - LN

25. Low noise. 40 50 60 70 80 90 100 63Hz 125Hz 250Hz 500Hz 1000Hz 2000Hz
Frequency [Hz]
Noise power level
BCWC - 630kW
BRWC - 630kW
BRWC - LN - 630kW
Low noise.
Screw compressor
“oil-free” centrifugal

26. Competitive comparison
BCWC
Compressor/s
“oil-free” centrifugal compressor
Evaporator
flooded evaporator with external separator
Condenser
Shell & tube
Expansion Valve
EEV as standard
TECS-HF
“oil-free” centrifugal compressor
flooded evaporator with internal separator
Shell & tube
EEV as standard

27. Competitive comparison
BCWC
Compressor/s
“oil-free” centrifugal compressor
Evaporator
flooded evaporator with external separator
Condenser
Shell & tube
Expansion Valve
EEV as standard
QUANTUM
“oil-free” centrifugal compressor
flooded evaporator with internal separator
Shell & tube
EEV as standard

28. Competitive comparison
Efficiency at full load

29. Competitive comparison
Efficiency at partial load: ESEER

30. Competitive comparison
Noise levels

31. BCWC
Water-cooled water chillers with centrifugal compressor/s
300 – 1250kW