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B CWC Water-cooled water chillers with centrifugal compressor/s 300 – 1250kW

B CWC Water-cooled water chillers with centrifugal compressor/s 300 – 1250kW. Process cooling. Technological Cooling. High Perf C.C. Technical Cooling. Water-cooled water chillers with centrifugal compressor/s. Technical cooling: efficiency & reliability … and extreme solutions

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B CWC Water-cooled water chillers with centrifugal compressor/s 300 – 1250kW

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

  2. Process cooling Technological Cooling High Perf C.C. Technical Cooling 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

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

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

  6. 300 500 700 900 1100 1300 [kW] BWCW0320A • cooling capacity: 320kW • compressor/s: 1 • circuit:1

  7. 300 500 700 900 1100 1300 [kW] BWCW0630A • cooling capacity: 630kW • compressor/s: 2 • circuit:1

  8. 300 500 700 900 1100 1300 [kW] BWCW0950A • cooling capacity: 950kW • compressor/s: 3 • circuit:1

  9. 300 500 700 900 1100 1300 [kW] BWCW1250A • cooling capacity: 1250kW • compressor/s: 4 • circuit:1

  10. 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

  11. 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

  12. Refrigerant flow

  13. Gas compression

  14. Delta T BCWC BRWC Traditional Time 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

  15. 12 10 8 EER 6 4 2 0 25% 50% 75% 100% BCWC - 630kW BRWC - 630kW Load [%] Top level performance. • 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.

  16. 100.000,0 -100% 90.000,0 -90% 80.000,0 -80% 70.000,0 -70% 60.000,0 -60% -48% Running cost [€/year] 50.000,0 -50% 40.000,0 -40% -38% -38% 30.000,0 -30% -39% 20.000,0 -20% 10.000,0 -10% 0,0 0% 320 650 950 1250 ''oil-free'' compressor chillers Cooling capacity [kW] Screw compressor chillers % Energy saving Top level performance.

  17. 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 Time Current [A] SCR Switch-on Time

  18. “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

  19. 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

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

  21. 6000 5000 4000 Weight [Kg] 3000 2000 1000 330 630 950 1250 Models [kW] BCWC BRWC Reduced dimensions. The BCWC unit is lighter and more compact than any other compressor with the same capacity featuring traditional technology.

  22. 100 90 80 Noise power level 70 60 50 40 330 630 950 1250 Frequency [Hz] BCWC BRWC BRWC - LN Low noise. • Extremely low noise levels • Extremely flat spectrum • Absence of vibrations

  23. 100 90 80 Noise power level 70 60 50 40 63Hz 125Hz 250Hz 500Hz 1000Hz 2000Hz 4000Hz 8000Hz Frequency [Hz] BCWC - 630kW BRWC - 630kW BRWC - LN - 630kW Low noise. “oil-free” centrifugal Screw compressor

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

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