Air-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.

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power supply	380V/3PH /50Hz
compressor
compressor type	Semi- hermetic, twin screw compressor
Qty/ refrigerant circuit	Nr.	1	42005	42005	42005	42037	42037	42037	42037
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℃。