Water Cooled Industrial Chiller

Test ability, technical level

1.GRAD has the National Laboratory of Air Conditioning Products recognized by CNAS, which is used for the design, development and experimental research of water-cooled chiller and the factory test of products.

2.Strict factory product quality control, so that users can buy at ease, with satisfaction.

3.GRAD screw type water cooled chiller series products ware tested by the national air conditioning quality testing center, the technical performance indicators are higher than GB/T184330.1-2007"Vapor compression cycle cold water (heat pump) unit Part 1: Industrial or commercial and similar uses of cold water (heat pump) units "standard, product quality is stable, reliable operation, has been praised by the majority of users at home and abroad.

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Product Details

The water-cooled screw chiller adopts the semi-closed double-screw compressor, and uses the single circuit or multi-circuit design. The protection and control facilities are placed in the control cabinet and the running state of the host is displayed on the computer monitor. All units are assembled in the factory and leave the factory after being operated and debugged. The application scope of this series of the units includes various commercial and civilian building facilities, such as shopping malls, office buildings,commercial buildings, factory workshops, hotels, hospitals and so on.

Water Cooled Industrial Chiller

Core technology

Through four core technologies - real-time flow control, efficient falling film evaporation, efficient oil separation and return technology, and Internet of Things remote intelligent services - the unit's energy efficiency has been increased by 10%, and its operation and maintenance are worry-free and cost-effective. The unit is more efficient, reliable and stable. The remote intelligent service center can monitor in real time and handle faults quickly online, providing customers with a more considerate and prompt product experience and after-sales service.

Save energy efficiency

The national patented falling film evaporation technology uses high-efficiency falling film heat exchange tubes. The refrigerant is evenly drizzled onto the heat exchange tube array through the liquid distributor and forms a film on the surface of the heat exchange tubes, allowing the refrigerant to fully contact the heat exchange tubes. The heat exchange efficiency is increased by more than 10% compared with the traditional flooded evaporator, the refrigerant charge is reduced by 27%, and the oil return effect is improved. It can effectively reduce the volume of the unit by more than 20%, providing a larger space for the layout of the machine room. This technology has been successfully patented: Falling film Evaporator for Refrigeration and Air Conditioning, patent number: ZL201520313780.5

Water Cooled Industrial Chiller

Stable and reliable

The Grede national patent external high-efficiency oil separation technology, through the high-efficiency external secondary oil separator composed of the shell, end head, intake pipe assembly, baffle, oil and gas filter screen assembly, outlet assembly, return oil port and sight glass, adopts the three-stage separation principle of oil and gas collision deflection separation, gravity sedimentation separation and filtration separation to separate the refrigerant gas and the lubricating oil in the gas Its structure is simple, easy to manufacture, with high separation efficiency, stable and reliable operation of the unit, and no risk of liquid carrying in the suction.

A partial parameter table of water-cooled screw chiller R22
Unit Model			LSW055	LSW110	LSW180	LSW250	LSW300	LSWD110	LSWD180	LSWD240	LSWD320	LSWD380	LSWD540	LSWF560	LSWF600	LSWF720	LSWF920	LSWF1000
Refrigeration capacity		KW	193	387	630	880	1055	386	634	844	1126	774	1899	1960	2110	253	3240	3517
power supply			3N-50HZ 380V
Starting mode			Y-∆ or shunt winding
Energy control			25%-100%					12.5%-100%						6.25%-100%
Compressor	Type		Semi-closed screw type
	Quantity		1					2						4
	Power input for refrigeration	KW	40.8	82.3	131.3	104.5	215.5	71.6	134	179.6	234.6	278	398.6	418	448	527.1	675	732.7
Condenser	Type		Shell and tube heat exchanger
	Waterside resistance	KPa	40-80
	Connecting pipe specification	DN	80	100	125	150	150	100	150	150	200	200	200	150	150	200	200	200
	Water flow	m3/h	36.8	80.7	130.9	183.7	218.5	78.7	132.1	176.1	234	277.6	395.2	409	440	525.8	673.4	730.9
Evaporator	Type		Shell and tube heat exchanger
	Waterside resistance	KPa	40-80
	Connecting pipe specification	DN	80	100	125	150	150	100	150	150	200	200	200	150	150	200	150	150
	Water flow	m3/h	29.6	66.6	108.4	151.4	181.5	66.4	109	145.2	193.7	229.8	326.7	337	363	168.6	216.7	229.8
Partial heat recovery	Quantity	KW	42	94	152	214	254.1	91.52	153.6	204.7	272.1	322.8	459.5	475.6	511.6	237.8	304.5	322.8
	Waterside resistance	Unit	40-80
	Connecting pipe specification	KW	50	65	80	80	100	65	80	80	100	100	125	100X2	100X2	100X2	125X2	125X2
	Water flow	m3/h	7.1	16.1	26.2	36.7	43.7	15.7	26.4	35.2	46.8	55.5	79	81.8	88	105.2	134.7	146.2

About us

GRAD sales network covers over 100 countries and regions like America, Australia Indonesia, Malaysia, UAE, Thailand, Nigeria etc and has established branch company in USA, and set up offices in Cambodia and Thailand to make overall layout of global market.

Water Cooled Industrial Chiller