WSCW series — Water cooled screw type water chiller

The condensers and evaporators of water-cooled screw type water chillers are shell and tube heat exchangers, which adopt new efficient heat exchanger structure. The heat exchanger adopts the most advanced and efficient copper tube bundle, heat exchange tube with unique geometry characteristics, enhances the vaporization core required for the boiling of the outer core of the tube, strengthens the flow disturbance in the tube, and delays the scale on the water side,and enhances the heat transfer to obtain the optimal performance. Compared with the traditional design, the current unique design improves the heat transfer efficiency by 30%. The evaporation tube adopts the technology of inner spiral groove and outer concave teeth to strengthen heat transfer, and the condensing tube adopts inner spiral groove and outer twisting teeth, which improves the heat transfer efficiency and evaporation temperature of the evaporator and condenser, and finally improves the energy efficiency ratio of the chiller.

product details

Characteristics

World-renowned twin-screw compressor, high efficiency, low noise, less wearing and long service life
SIEMENS PLC controller with Chinese/English human-computer interface
Electrical system uses Schneider and other national brands
Man-machine interface: the chiller adopts well-known brand controller and control interface, digital display, one-click operation
Perfect breakdown protection：high and low pressure protection, anti-freezing protection, water flow protection, reverse and lack phase protection
Ultra-wide variable range of chilled water temperature

Configurable options

Salt water evaporator
Stepless energy adjustment
Heat recovery
Pump control
Special requirement of power supply
LoT monitoring

Specification

SINGLE COMPRESSOR

Type		WSCW-100.1	WSCW-135.1	WSCW-180.1	WSCW-195.1	WSCW-235.1	WSCW-260.1	WSCW-305.1	WSCW-320.1	WSCW-350.1	WSCW-385.1
Nominal cooling capacity	kW	100	135	180	195	235	260	305	320	350	385
	(104Kcal/h)	8.6	11.6	15.5	16.8	20.3	22.4	26.3	27.6	30.2	33.2
Controller		PLC microcomputer control
Power supply		3Ø 380V/50Hz(customized)
Compressor	Type	5-6 asymmetric semi-closed twin-screw compressor
	Start-up mode	star-delta starting
	Energy regulation	0-33-66-100%			0-25-50-75-100%
	Refrigeration power(kW)	22.6	29.8	37.3	41	49.9	54.3	61.1	64.3	70.8	78
	Rated current(A)	39.3	51.9	64.9	71.3	86.8	94.5	106.3	111.9	123.2	135.7
Evaporator	Type	shell-tube dry evaporator
	Flow(m³/h)	17.2	23.2	31	336.6	40.6	44.8	52.6	55.2	60.4	66.4
	Connection(Inch)	DN65			DN80		DN100				DN125
	Water pressure drop(kPa)	48	48	50	50	50	52	54	55	55	58
Condenser	Type	shell-tube dry evaporator
	Flow(m³/h)	21.5	29	38.7	41.9	50.5	55.9	65.6	68.8	55	58
	Connection(Inch)	DN65			DN80		DN100				DN125
	Water pressure drop(kPa)	46	46	47	47	48	49	51	53	75.3	82.8
Refrigerant	Type	R22（optional）
Refrigerant	Refrigerant charge(kg)	20	25	30	40	45	49	51	53	53	56
Machine weight(kg)		850	1050	1270	1340	1640	1680	1720	1750	2080	2300
Operating weight(kg)		900	1150	1420	1540	1890	1940	1990	2050	2330	2550
Technical note:
1.Condition: chilled water inlet temperature 12°C and outlet temperature 7°C, cooling water inlet temperature 30°C and outlet temperature 35°C.
2.Temperature condition:chilled water outlet temperature 5°C-15°C; and cooling water inlet temperature 19°C-33°C.
3.The water side pressure of evaporator and condenser is designed to be 1.0MPa.
4.The water-side fouling factor of evaporator is 0.018m² °C/kW, water-side fouling factor of condenser is 0.044m² °C/kW.
5.Contact us for customized solutions.

DUAL COMPRESSOR

Type		WSCW-200.2	WSCW-270.2	WSCW-360.2	WSCW-390.2	WSCW-470.2	WSCW-520.2	WSCW-610.2	WSCW-640.2	700.2	WSCW-770.2
Nominal cooling capacity	kW	200	270	360	390	470	520	610	640	700	770
	(104Kcal/h)	17.2	23.3	31	34	40.5	44.8	52.6	55.2	60	66
Controller		PLC microcomputer control
Power supply		3Ø 380V/50Hz(customized)
Compressor	Type	5-6 asymmetric semi-closed twin-screw compressor
	Start-up mode	star-delta starting
	Energy regulation	0-16.5-33-50-66-83.5-100%			0-12.5-25-37.5-50-62.5-75-87.5-100%
	Refrigeration power(kW)	45.2	60	75	82	99.8	108.6	122.2	128.6	141.6	156
	Rated current(A)	78.6	103.7	129.8	142.7	173.7	189	212.6	223.8	246.4	271.4
Evaporator	Type	shell-tube dry evaporator
	Flow(m³/h)	34.4	46.6	62	68	81	89.6	105.2	110.4	120	132
	Connection(Inch)	DN80	DN100			DN125					DN150
	Water pressure drop(kPa)	50	52	52	53	54	55	55	55	60	68
Condenser	Type	shell-tube dry evaporator
	Flow(m³/h)	43	58.1	77.4	83.9	101.1	111.8	131.2	137.6	150.5	165.6
	Connection(Inch)	DN65*2		DN80*2		DN100*2				DN125*2
	Water pressure drop(kPa)	45	45	45	47	50	52	53	55	58	60
Refrigerant	Type	R22
Refrigerant	Refrigerant charge(kg)	40	50	60	80	90	95	100	110	130	150
Machine weight(kg)		1650	1850	2300	2400	2800	3000	3100	3200	4000	4500
Operating weight(kg)		1900	2150	2550	2750	3350	2550	3600	3750	4450	4950
Technical note:
1.Condition: chilled water inlet temperature 12°C and outlet temperature 7°C, cooling water inlet temperature 30°C and outlet temperature 35°C.
2.Temperature condition:chilled water outlet temperature 5°C-15°C; and cooling water inlet temperature 19°C-33°C.
3.The water side pressure of evaporator and condenser is designed to be 1.0MPa.
4.The water-side fouling factor of evaporator is 0.018m² °C/kW, water-side fouling factor of condenser is 0.044m² °C/kW.
5.Contact us for customized solutions.