Water Cooled 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.
Water Cooled Chiller
Water cooled 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, hopitals and so on.
Product Features
★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
★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.
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.
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.
Establised in 1993, GRAD Group covers an area of 1.15 million square meters and has more than 2,000 employees, with an annual output value of nearly 4 billion yuan. GRAD Group's main business: central air conditioning chiller and terminal products, FRP water tank, FRP winding pipe, FRP storage tank, wind turbine cabin cover, environmental protection equipment, and other more than 130 varieties. GRAD Group is the pillar enterprise of the “Dezhou Central Air-Conditioning City” named by the China Refrigeration and Air-Conditioning Industry Association. It ranks the top 10 among central air-conditioning enterprises in the country, The top 3 composite material enterprises，and gets the first-class qualification for the installation of national electromechanical equipment and the second-class qualification for air purification engineering. GRAD Group can undertake central air conditioning engineering, purification engineering construction.
FAQ
Q1. Where is your loading port?
A: Qingdao/Shanghai/Tianjin, China or else port as for your request.
Q2. What's your company's main products?
A: Our company is specialized in central air-conditioning,ventilation and GRP Composite material products.
Q3. What’s your payment term.
A:T/T,30% deposit,70% before delivery or 100% Irrevocable L/C at sight.
Q4. What’s your Warranty.
A:Warranty for 12 months from the date of shipment from the factory.
