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what is a screw chiller?

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.


Types of Screw Chillers

● Air-Cooled

Uses fans to reject heat into ambient air; easier to install, no cooling towers required.

● Water-Cooled

Uses water to absorb heat, typically more energy-efficient but requires cooling towers and more maintenance.


How a Screw Chiller Works (Basic Process)

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.


Modular Type Air Cooled Machine

Modular Type Air Cooled Machine

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Air Cooled Screw Chiller

Air Cooled Screw Chiller

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Air Cooled Screw Chiller

Air Cooled Screw Chiller

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Micro Computer Controllers Air Cooled Chiller

Micro Computer Controllers Air Cooled Chiller

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Industrial Air Cooled Chiller

Industrial Air Cooled Chiller

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Air Cooled Scroll Chiller

Air Cooled Scroll Chiller

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Air Cooled Chiller for Sale

Air Cooled Chiller for Sale

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Air Cooled Scroll Chiller

Air Cooled Scroll Chiller

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Air Cooled Scroll Chiller

Air Cooled Scroll Chiller

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Module Air Cooled Heat Pump

Module Air Cooled Heat Pump

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Air Cooled Scroll Chiller

Air Cooled Scroll Chiller

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Air Cooled Scroll Compressor Chiller

Air Cooled Scroll Compressor Chiller

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what is a screw chiller?

Advantages of Screw Chillers

✔ 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


Common Applications


what is a screw chiller?Commercial buildings (large HVAC systems)
what is a screw chiller?Industrial cooling (plastic, textile, food processing)
what is a screw chiller?Chemical and pharmaceutical processes
what is a screw chiller?Cold storage and refrigeration plants
what is a screw chiller?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.


Click here for other articles about screw chillers


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