Water Cooled Water 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

Water Cooled Water Chiller

Water Cooled Water 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 Water Chiller Advanced Control System

Equipped with a cutting-edge PLC control system, the water-cooled water chiller ensures precise temperature regulation and energy management. The intelligent interface allows users to monitor operating parameters—such as cooling capacity, power consumption, and refrigerant pressure—in real time via touchscreen or remote devices. With adaptive load adjustment, the unit dynamically optimizes performance to match demand, further reducing energy consumption by up to 15%.

Environmental Sustainability

Aligned with global green initiatives, the chiller utilizes eco-friendly refrigerants (R134a or R513A) with low GWP (Global Warming Potential), complying with international environmental standards like EPA and EU F-Gas regulations. The compact design and reduced refrigerant charge minimize carbon footprint while maintaining high efficiency. Additionally, the unit’s noise levels are optimized to below 75dB, ensuring minimal disturbance in urban installations.
Customization & Scalability

To cater to diverse project needs, GRAD offers tailored solutions including modular designs for large-scale applications. Clients can choose between single-circuit units (for consistent loads) or multi-circuit systems (for zoned cooling), with optional heat recovery modules to repurpose waste heat for domestic hot water or industrial processes.

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

Application scope

Comfort air conditioning systems: large supermarkets or commercial complexes, hotels, shopping malls, office buildings, exhibition halls, airports, stadiums, etc.

Process air conditioning systems: electronics, biology, light textile, chemical engineering, metallurgy, pharmaceuticals, power, machinery, etc.

Water Cooled Water Chiller

About us

GRAD Group founded in 1993 in Dezhou, shandong province,that is an enterprise group focusing on the artificial environment,and spanning five strategic new industries of new energy, new materials, equipment manufacturing, energy conservation and environmental protection, and information technology.GRAD products and services spread around the China and world with 100 countries and regions. They are widely used in infrastructure projects, commercial real estate, industrial manufacturing, agricultural development, electronic information, automobile engineering, medicine, environmental protection treatment, ocean engineering, rail transportation and other fields. With more than 10,000 employees, GRAD Group owned the production bases in Shandong, Guizhou, Sichuan, Xinjiang ,Inner Mongolia and so on.And GRAD Group has established r&d centers in Shanghai, Beijing, Jinan, Lanzhou and Los Angeles.

Water Cooled Water Chiller