A screw chiller is a type of chiller (either air-cooled or water-cooled) that uses twin rotary screw compressors instead of reciprocating or centrifugal compressors. It's commonly used in large-scale HVAC systems, process cooling in manufacturing, and other applications requiring steady, reliable cooling.
Uses fans to reject heat into ambient air; easier to install, no cooling towers required.
Uses water to absorb heat, typically more energy-efficient but requires cooling towers and more maintenance.
1. Evaporation: Warm water from the system enters the evaporator and transfers its heat to the refrigerant, which evaporates.
2. Compression: The vaporized refrigerant enters the screw compressor, which compresses it to a high-pressure, high-temperature gas.
3. Condensation:
In air-cooled chillers: heat is released to the air via fans.
In water-cooled chillers: heat is released to cooling tower water.
4. Expansion: The refrigerant is expanded through an expansion valve and becomes cold again.
5. Repeat: The cycle continues to maintain chilled water/coolant temperature.
Jul. 21, 2025
The manufacturing industry continually seeks innovations that enhance efficiency, and High-Capaci...Jul. 21, 2025
This comprehensive guide is for facility managers and mechanical engineers seeking effective soluti...✔ High efficiency Suitable for large cooling loads
✔ Quiet operation Low vibration, minimal noise
✔ Continuous operation Ideal for 24/7 industrial use
✔ Long service life Fewer moving parts vs. piston type
✔ Compact design Space-saving for large capacity
![]() | Commercial buildings (large HVAC systems) |
![]() | Industrial cooling (plastic, textile, food processing) |
![]() | Chemical and pharmaceutical processes |
![]() | Cold storage and refrigeration plants |
![]() | Data centers (when paired with chilled water systems) |
If you’re choosing a chiller or comparing types (e.g., screw vs. centrifugal vs. scroll), I can help you recommend or customize a chiller solution based on your load profile, application and energy efficiency goals.
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