Water Cooled Chiller With Screw Compressor(Double Systems)

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Features
Technical Data
Application
Certification
Part List
Reference

Products features

1. Twin screw compressor brand is employed, with high efficiency, low noise level, less wearing and long operation time.

2. Four stage volume control or 0%-100% automatic regulation.

3. Use PLC microcomputer control from Germany SIEMENS. LCD touch screen, both English and Chinese human-machine interface.

4. Complete breakdown protection: high and low pressure protection, air discharge protection, oil level protection, water flow protection, reverse and lack phase protection, chilled water anti-freezing protection, cooling water overheat protection.

5. Wider range of variable chilled water temperature to meet the low temperature industrial requirements.

Product options

1. Salt water evaporator

2. Stepless energy regulation

3. Whole heat recovery/partial heat recovery

4. Pump/Cooling tower control

5. Special power supply

6. Remote communication connector

7. Frequency conversion

Product specification

Refrigerant: R22/R407C/R134A/R410A

Evaporator/condenser max water pressure drop: 1.0Mpa

Evaporator: fouling factor 0.018m2.℃/KW

Condenser: fouling factor 0.044m2.℃/KW

Power supply: 380V/3P/50Hz

Allowable voltage fluctuate: ±5%

Allowable frequency fluctuate: ±2%

Compressor

Select semi-closed 5:6 asymmetric twin-screw compressor from world-renowned brand. The possibility of shaft seal leakage is zero. Using a rotating exhaust design, the latest development of the fourth generation line, optimize the circumference speed, excellent design of gear so that the unit has higher compression efficiency. Motor chamber compression chamber integrally cast, high precision. Double pressure compensated rotor housing, very strong, no expansion even in the state of high pressure, and it effectively reduces the noise.

Heat exchanger

The condenser and evaporator of this series unit adopts shell and tube heat exchanger, using new high efficient heat exchanger structure. Heat exchanger adopts the most advanced and efficient heat exchanger tube bundle with unique geometric characteristics and enhanced tube nucleate boiling required vaporization core, strengthened the flow disturbance inside the pipe, while delaying the scaling on the water side. The inner and outer walls are enhanced for heat transfer to achieve optimal performance. Compared to previous designs, the current unique design improves heat transfer efficiency by 30%.

Evaporator evaporation tube with inner grooved on outer concave tooth enhanced heat transfer technology, condenser tube with inner grooved cutter teeth technology, improves the evaporator and condenser heat transfer efficiency and the evaporation temperature, and improve the energy efficiency ratio for the unit.

PLC

A good Chinese-English interactive interface is to achieve automatic control function before the LCD display real-time statues of the machine work, precise monitoring unit operating at optimum state, the touch panel sealed, waterproof, dustproof, corrosion-resistant, long-key life. Equipped with cooling pumps, cooling water pumps and cooling tower fan interlock control function.

Low temperature chillers

SW series of low temperature chillers based on well-known brands as the host semi-hermetic screw compressor, built-in suction filter, oil filter, oil separators, safety valve and protection module, with no leakage, low noise, stable operation.

Water cooled screw chiller(double compressor) technical parameter

VW-
Type		200D	270D	350D	380D	470D	520D	600D	640D	700D	760D
Nominal cooling capacity	kw	196.0	270.0	351.1	382.2	466.7	511.1	602.2	635.6	695.6	760.0
Nominal cooling capacity	104 kcal/h	16.9	23.2	30.2	32.9	40.1	43.9	51.8	54.6	59.8	65.3
Operating control method	Use PLC microcomputer control
Power Supply	380V/3N/50HZ
Startup type	Y-△
Compressor	Type	Semi-closed 5:6 asymmetric twin-screw compressor
	Input power(kw)	46.0	60.0	78.0	84.0	102.0	112.0	126.0	132.0	146.0	160.0
	Rated current(A)	78.4	103.2	129.4	142.0	172.8	188.2	211.8	222.8	245.4	267.6
	Energy regulation	0-16.5%-33%-100%			0-12.5%-25%-37.5%-100%
Evaporator	Type	High efficiency dry type shell and tube heat exchanger
	Flow(m3/h)	33.7	46.4	60.4	65.7	80.3	87.9	103.6	109.3	119.6	130.7
	Water pressure drop(kPa)	50.0	50.0	52.0	52.0	54.0	54.0	55.0	55.0	58.0	60.0
	Interface size	DN100		DN125		DN150
Condenser	Type	High efficiency shell and tube heat exchanger
	Flow(m3/h)	41.6	56.9	74.2	80.5	98.4	107.5	126.2	133.4	145.8	159.0
	Water pressure drop(kPa)	45.0	45.0	48.0	48.0	50.0	52.0	52.0	54.0	55.0	55.0
	Interface size	DN100		DN125	DN80*2	DN100*2				DN125*2
Refrigerant	Type	R22
Refrigerant	Refrigerant volume(kg)	40.0	50.0	64.0	70.0	80.0	92.0	106.0	110.0	120.0	130.0
Overall dimensions	Length(mm)	2950	2950	3250	3285	3285	3555	3540	3540	3800	3800
	Width(mm)	1060	1085	950	1000	1050	1100	1100	1200	1260	1310
	Height(mm)	1545	1620	1630	1785	1900	1915	1920	1920	2020	2050
Weight	Machine weight(kg)	1650	1850	2100	2300	2400	2600	3000	3050	3300	3750
Weight	Operating weight(kG)	1900	2150	2550	2650	2750	3100	3550	3600	3950	4200

VW-
Type		830D	990D	1040D	1140D	1240D	1280D	1480D	1640D	1740D	1960D
Nominal cooling capacity	kw	830.0	990.0	1042.2	1142.2	1235.6	1284.4	1483.6	1642.2	1743.3	1963.6
Nominal cooling capacity	104 kcal/h	71.4	85.1	89.6	98.2	106.2	110.4	127.6	141.2	149.9	168.8
Operating control method	Use PLC microcomputer control
Power Supply	380V/3N/50HZ
Startup type	Y-△
Compressor	Type	Semi-closed 5:6 asymmetric twin-screw compressor
	Input power(kw)	176.0	206.0	216.0	236.0	252.0	260.0	300.0	334.0	354.0	398.0
	Rated current(A)	297.6	345.6	365.0	395.4	425.6	439.2	506.0	561.4	596.2	670.4
	Energy regulation	0-12.5%-25%-37.5%-…100%
Evaporator	Type	High efficiency dry type shell and tube heat exchanger
	Flow(m3/h)	142.8	170.3	179.3	196.5	212.5	220.9	257.2	282.5	301.6	339.8
	Water pressure drop(kPa)	65.0	68.0	68.0	70.0	70.0	72.0	72.0	73.0	73.0	75.0
	Interface size	DN150	DN200						DN250
Condenser	Type	High efficiency shell and tube heat exchanger
	Flow(m3/h)	173.9	207.5	218.5	239.4	259.0	269.2	313.5	344.4	367.6	408.4
	Water pressure drop(kPa)	62.0	65.0	65.0	67.0	68.0	68.0	70.0	70.0	72.0	72.0
	Interface size	DN125*2		DN150*2					DN200*2
Refrigerant	Type	R22
Refrigerant	Refrigerant volume(kg)	140.0	170.0	180.0	200.0	220.0	240.0	280.0	330.0	340.0	370.0
Overall dimensions	Length(mm)	3800	3830	3830	4100	4100	4370	4620	4700	4700	4850
	Width(mm)	1310	1360	1360	1390	1430	1500	1520	1630	1630	1720
	Height(mm)	2100	2250	2250	2270	2100	2290	2510	2640	2640	2640
Weight	Machine weight(kg)	4000	4500	5300	6000	6300	7000	7300	8300	8450	8800
Weight	Operating weight(kG)	4450	4950	6050	6600	6800	7550	7850	8900	9100	9300

Cooling condition: Chilled water inlet/outlet temperature 12/7 ℃, cooling water inlet/outlet temperature 30℃/35℃
Temperature term: Chilled water outlet temperature 5℃~15℃; cooling water inlet temperature 19℃~33℃.

Application: Large scale air-conditioning systems pump this chilled water to coils in specific areas of, lets say, a high rise building. The air handling systems for each area open and close the water flow through it specific area keeping the air of the rooms at a desired temperature.

Country: Bolivia
Chiller type: water cooled
Cooling capacity: 130kW
Cooling medium: R407C
Supply power: 3P-380V-50Hz
Compressor brand: COPELAND
Compressor type: scroll
Water outlet tem.: 7℃

Country: Philippines
Chiller type: air cooled
Cooling capacity: 130kW
Cooling medium: R22
Supply power: 3P-380V-60Hz
Compressor brand: COPELAND
Compressor type: scroll
Water outlet tem.: 7℃

Country: Malaysia
Chiller type: water cooled
Cooling capacity: 175kW
Cooling medium: R22
Supply power: 3P-380V-50Hz
Compressor brand: HANBELL
Compressor type: screw
Water outlet tem.: 7℃

Country: UAE
Chiller type: air cooled
Cooling capacity: 41kW
Cooling medium: R22
Supply power: 3P-380V-50Hz
Compressor brand: COPELAND
Compressor type: scroll
Water outlet tem.: 7℃