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

High-Efficiency Water-Cooled Screw Chiller – Patented HVAC Technology with IoT Smart Services

The GRAD Water-cooled Screw Chiller is engineered for superior cooling performance in large-scale commercial and industrial facilities. Powered by a semi-closed twin-screw compressor, our chillers feature a flexible single or multi-circuit design to ensure maximum reliability. Every unit is fully assembled, factory-tested, and debugged to guarantee seamless integration into your HVAC system.

Water Cooled Industrial Chiller

4 Core Technologies for Worry-Free Operation

By integrating four breakthrough innovations, we have increased overall energy efficiency by 10% while significantly lowering maintenance costs:

Real-Time Flow Control: Precise regulation for varying load conditions.
High-Efficiency Falling Film Evaporation: Patented thermal technology.
Advanced Oil Separation & Return: Ensures compressor longevity.
IoT Remote Intelligent Service: 24/7 real-time monitoring and rapid online fault diagnostics.

Patented Energy-Saving: Falling Film Evaporation Technology (Patent No.: ZL201520313780.5)

Our national patented falling film evaporation technology redefines cooling efficiency. By evenly drizzling refrigerant onto high-efficiency heat exchange tubes, we create a thin film that maximizes contact and thermal transfer.

10% Higher Efficiency: Compared to traditional flooded evaporators.
27% Less Refrigerant: Reduces environmental impact and recharging costs.
20% Smaller Footprint: Compact design saves valuable space in the machine room.
Enhanced Oil Return: Minimizes oil buildup for stable, long-term performance.

Water Cooled Industrial Chiller

Unmatched Reliability: 3-Stage External Oil Separation

GRAD’s patented external secondary oil separator utilizes a unique three-stage separation principle—collision deflection, gravity sedimentation, and filtration.

Zero Liquid Carry-over: Protects the suction line from liquid slugging.
High Separation Efficiency: Separates lubricating oil from refrigerant gas with extreme precision.
Stable Operation: Simple, durable structure ensures the unit runs reliably under all load conditions.

Versatile Applications

GRAD water-cooled screw chillers are the preferred choice for a wide range of facilities requiring stable and cost-effective cooling:

Commercial: Shopping malls, luxury hotels, and office complexes.
Industrial: Factory workshops and large-scale commercial buildings.
Institutional: Hospitals and healthcare facilities.

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