Air Cooled Screw Chiller
1.Free of machine room, less initial investment.
Installed outdoors, no need to build a separate room, no need cooling towers, no need to drill Wells or bury pipes, thus reducing the initial investment of the user.
2. High efficiency, energy saving, environmental protection and safety
Air-cooled screw cold (hot) water unit compared with electric heating can save electricity 75%. Compared with traditional boiler equipment, no combustion,Burning, no exhaust emissions, no flammable and explosive safety hazards.
3. Wide range of operation, strong applicability
According to different needs, a variety of models are available, it can be stable heating operation at -35 ° C ambient temperature, at -30 ° C ~ 48 ° C Stable cooling operation at ambient temperature
4. Intelligent control, no need for special duty
Intelligent control system monitors the operation status of the unit in real time, and automatically adjusts the energy of the unit according to the actual load demand, without the need for special duty, saving labor cost.
5. Multiple protection functions to ensure reliable operation of the unit
With multiple protection function, when failure, real-time automatic alarm
Product introduction
Air-cooled screw type cold (hot) water unit is based on air as a cold (hot) source, water as a refrigerant, it can be cooling and heating, and can run all year round, with environmental protection, energy saving, comfortable, stable characteristics.
GRAD air-cooled screw cold (hot) water unit embodies the essence of design, manufacture and application, the unit has low temperature, strong heat, multiple protection Freezing, intelligent defrosting, intelligent control and other core technologies, high operational reliability, wide range of operation, product diversity, widely used in hotels, shopping malls, office buildings,exhibition halls, airports, stadiums and other public places, and can meet the electronic,pharmaceutical, biological, textile,Chemical industry, metallurgy, electric power, machinery and other industries.
Working Principle
When the air-cooled water chiller is working, the refrigerant absorbs the heat from the cooled object in the evaporator and vaporizes. The compressor continuously draws the gas generated in the evaporator and compresses it into high-temperature and high-pressure vapor. The refrigerant vapor is then sent to the condenser to exchange heat with the air. After releasing heat, it condenses into liquid. The liquid refrigerant is decompressed after passing through the expansion valve. Then it enters the evaporator to absorb the heat of the cooled object and vaporizes again. This heat exchange process is repeated until the industrial water is cooled to the required temperature.
● Large diameter heat exchanger, low temperature operation effectively reduce refrigerant flow resistance, increase evaporation pressure, inhibit frost;
● Large distance aluminum foil design, low temperature operation effectively reduce air flow resistance, increase evaporation pressure, inhibit frost;
● Fin flow independent control, accurate control, more thorough defrosting;
● Concentrated a variety of innovative technologies, distributed defrosting system and piston type four-way directional valve effectively avoid the suction of traditional air-cooled heat pump units With liquid, defrosting incomplete, four way directional valve stuck and so on.
We provide professional air-cooled central air conditioning system customized services, dedicated to creating efficient, energy-saving, and comfortable air conditioning solutions for our clients. Our services include preliminary system design, matching air-cooled main units, air conditioners, and fan coil units, ensuring the integrity and efficient operation of the entire air-cooled system.
Choose our customized central air conditioning air-cooled system service and enjoy professional, efficient, and energy-saving air conditioning solutions to provide the best air conditioning experience for your project.
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About us
Shandong GRAD Group – Your Trusted Partner in HVAC & Composite Solutions
With over 20 years of industry expertise since 1993, GRAD Group has grown into a leading manufacturer of central air conditioning systems and GRP composite materials. Our workforce of 2,200+ professionals ensures excellence in R&D, production, sales, installation, and maintenance, delivering one-stop solutions for global clients.
HVAC Solutions – Complete System Expertise
450,000 m² production base for chillers, heat pumps, cooling towers, AHUs, FCUs, and ventilation equipment.
International certifications (CTI, CE, AHRI) ensure compliance with global standards.
Customized solutions for commercial, industrial, and institutional projects.
GRP Composite Materials – Superior Alternative to Steel
700,000 m² production facility specializing in lightweight, high-strength, corrosion-resistant GRP products.
Advanced manufacturing processes:
Vacuum injection
GRP filament winding
SMC mould pressing
Pultrusion & hand lay-up
Custom-engineered solutions for diverse industrial applications.
Global Reach & Commitment
Since entering the international market in 2009, GRAD products have been exported to 100+ countries. As a flagship enterprise in HVAC and composite materials, we strive to be the preferred one-stop supplier for procurement partners worldwide.
GRAD Group – Innovation, Quality, Global Excellence.
