Screw Chiller W-SK Series


Screw Chiller W-SK Series
Water Cooled Water Chiller

Provide chilled fluid for industrial application from a central location
with the Conair Water Cooled W-SK series central chillers.

 Simple  design  of  screw  compressors  provide both full load and
part load efficiencies unmatched in the industry,and results in lower
energy costs when compared to reciprocating compressors.

  • Pressure switch protects the compressor against low and high pressure
  • Monitoring of suction and discharge refrigerant pressures
  • Helical screw design results in part load performance
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Features (click here to hide)

Rugged compressor design with only four moving parts eliminating the need for pistons, connecting road, wrist pins and valves. less moving parts means less
internal friction and greater efficiency.

Semi hermitic screw compressors with two shaft designs with suction and discharge solder connection, integrated check valve, integrated pressure relief valves,
flanged on oil separator, oil heater, oil filter, and oil sight glass.

All chilled water contact surfaces are non ferrous for protections against corrosion.All wetted surfaces are stainless steel,copper or other non ferrous material.

Small unit size, factory wired, easy lifting procedure, easy start up logic

Stainless steel shell & tube evaporator with Seamless internally finned copper tubes tor higher surface area

Strainer protects the evaporator from solid contaminations in the process water.

Flow switch is used detect flow loss as a  safety of evaporator when return water flow is low.

Electronic expansion valve is used to regulate the flow of refrigerantIn the evaporator as per the load of system to maintain the suction superheat.

Shell & Tube type water cooled condenser for Indian ambient condition with externally finned copper tube.

Removable cartridge type filter dryer to ensure moisture free system and quick change features

Sight glass indicates the status of dry or moist system.

Pressure switch protects the compressor against low and high pressure

Monitoring of suction and discharge refrigerant pressures

Antifreeze protection to safe guard the evaporator & compressor against low temperature.

Option of eco friendly refrigerant also available. { R134a )

Helical screw design results in part load performance

Only four moving parts when compared to reciprocating compressors; there are no pistons, connecting rods,suction and discharge valves or mechanical oil pump

Latest heat transfer technology results in increased condenser and evaporator tube efficiency.

Reduced rotor clearance results in reduced leakage between the high and low pressure cavities during compression.

Resistant to liquid slugging this compressor design can handle amounts of liquid refrigerant that would severely damage a reciprocating compressor.

Specifications (click here to hide)
Model W40-SK W65-SK W75-SK W90-SK W100-SK
Performance characteristics
Nominal capacity* kW {TR} 153 {43} 229 {65} 259 {73.6} 316{90} 358 {102}
Compressor quantity/kW 1/33.3 1/42.1 1/47.5 1/57.6 1/65.8
Standard process pump kW Customer Scope of Suppy
Maximum flow to process lpm 480 880 880 1380 1380
Maximum pressure bar 5.6 4.5 5.6 5.6 5.6
Water reservoir capacity liters Customer Scope of Suppy
Condenser water flow lpm 600-650 900-950 1300-1550 1550-1800 1650-1950
Dimensions mm
A - Height 1800 1800 1800 1800 1800
B - Width 1350 1350 1350 1350 1350
C - Depth 2530 2500 3000 3000 3000
Installed weight kg 1650 1850 2100 2100 2100
Process connections BSP female 3" 3" 4" 5" 5"
Condenser connections BSP female 3" 4" 4" 5" 5"
Voltage 415 V, 50 Hz, 3 Phase, with Neutral and Earhing
 Connected load kW  33.3 42.1 47.5 57.6 65.8
 Control voltage 24V DC 
 Control range in °C  +8°C to +30°C
 Colour  Golden Yellow RAL 1003 / Siemens Grey RAL 7032