What is a Natural Cooling Air-Cooled Screw Chiller?

What is a Natural Cooling Air-Cooled Screw Chiller?

What is a Natural Cooling Air-Cooled Screw Chiller?
A Natural Cooling Air-Cooled Screw Chiller is an advanced refrigeration system that integrates both mechanical compression and natural cooling (also known as “free cooling”) to achieve efficient temperature control and energy savings. Unlike traditional air-cooled chillers that rely solely on compressors for cooling, this system intelligently utilizes ambient low temperatures—especially during cooler seasons—to partially or completely replace compressor operation, significantly reducing power consumption.

The unit features high-efficiency screw compressors, air-cooled condensers, and a built-in free cooling module equipped with finned coil heat exchangers and intelligent three-way control valves. When the outdoor temperature drops below a certain threshold, the system automatically switches to natural cooling mode. In this mode, cold ambient air directly cools the process water or glycol solution through the heat exchanger, minimizing compressor load while maintaining stable outlet water temperature.

Aurashu’s Natural Cooling Air-Cooled Screw Chiller adopts intelligent dual-mode control, seamlessly switching between mechanical and natural cooling modes based on real-time ambient conditions and system demand. This enables energy savings of up to 30–50% annually, especially in regions with long cold seasons. Additionally, it features modular configuration, low noise operation, eco-friendly refrigerants (R134a/R1234ze), and a fully digital monitoring system for precision management.

These chillers are widely used in data centers, pharmaceuticals, electronics manufacturing, industrial processing, and other facilities requiring reliable year-round cooling. By reducing compressor runtime and energy usage, they also extend equipment life and lower carbon emissions, helping users meet both economic and environmental sustainability goals.

Aurashu provides tailored natural cooling solutions according to customer needs, ambient temperature ranges, and process requirements—ensuring optimal system performance, energy efficiency, and reliability in all operating conditions.