Water strong cooled screw chiller

Features

1. 8 sizes available ranging from 380 kW to 1419 kW cooling capacity.

2.Semi-hermetic screw compressor for all models. Each compressor is equipped with a crankcase heater and a thermal overload cut-out; the screw compressor is also complete with a built-in electronic protection with temperature sensor located directly in the motor winding and on the discharge line.

3.External rotor type axial fans, equipped with three phase direct drive motors, low noise 8 poles, protection level IP54, provided with a protective outlet grille.

4.Evaporator built with high efficiency shell and tube type heat exchanger, factory insulated with flexible close cell material.

5.Condenser built with seamless copper tubes mechanically expanded into blue hydrophilic aluminum fins.

6.Refrigerant circuit complete with charge valves, filter drier, sight glass, gas-liquid separator, thermostatic expansion valve, high & low pressure switch. The heat pump unit is completed also with 4-way valve, liquid receiver and one way valve.

7.Hydraulic circuit built with galvanized pipe, complete with water discharge connection for shell and tube heat exchanger and flange type hydraulic connectors.

8.Electric panel consist of: compressor contactor, fan motor contactor, compressor isolating switch, fan protection breaker, phase sequence relay and microprocessor with function display.

9. Automatic operation dramatically reducing maintenance cost thanks to reliable microprocessor system.

power supply                                         380V/3PH /50Hz

compressor

compressor type

Semi- hermetic, twin screw compressor

Qty/ refrigerant circuit

Nr.

1/1

1/1

1/1

1/1

2/2

2/2

2/2

2/2








Energy adjustment

\

25%,50%,75%,100% 4-step ( 50%~100% stepless as option)


Refrigerant

R134A

Water side heat exchanger

Type

Shell-and-tube heat-exchanger

Water Volume

m3/h

65.4

86

103.2

123.8

151.4

172

206.4

244.2








Water pressure drop

kpa

39

54

56

58

70

75

71

69








Inlet/outlet pipe diameter

mm

DN125

DN125

DN125

DN150

DN150

DN150

DN200

DN200








Water side fouling factor

m2.℃/kW

0.086


Air side heat exchanger

















Type

M shape Heat exchanger, High efficient exchanger tube + aluminum fins

Fans Quantity

Nr.

6

8

10

10

14

16

16

20








Air Volume

m3/h

23000x6

23000x8

23000x10

23000x10

23000x14

23000x16

23000x16

23000x20








Motor Input

kW

2.8x6

2.8x8

2.8x10

2.8x10

2.8x14

2.8x16

2.8x16

2.8x20








Physical dimensions

Standard type (mm)

L

3810

4680

5880

5880

8800

9460

9460

11700








W

2280

2280

2280

2280

2280

2280

2280

2280








H

2370

2370

2370

2370

2430

2430

2430

2430








Shipping weight

kg

3320

4330

5000

5500

7750

8900

9100

11100








Shipping weight

kg

3520

4530

5200

5700

8050

9200

9400

11400








Sound pressure level **

dB(A)

70

70

71

71

72

74

75

75








Note:

1) Nominal cooling capacities are based on the following conditions:

Chilled water inlet/outlet temp: 12℃/7℃; Outdoor temp (DB/WB):35℃/24℃.

2) The applicable ambient temperature range of R134a air-cooled screw units is 15℃ ~ 43℃


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