Why are water-cooled chillers more energy-efficient?

In Aurashu water-cooled screw chillers, heat generated during the refrigeration process is transferred to cooling water through high-efficiency shell-and-tube or falling-film evaporators and condensers. This cooling water is then circulated to a cooling tower, where heat is dissipated efficiently. Because the cooling water temperature is more stable than outdoor air temperature, the chiller operates under consistent conditions, maintaining high efficiency even during peak summer loads. In contrast, air-cooled chillers must rely on ambient air, which can be extremely hot in summer, forcing compressors to work harder and consume more energy.

Another key factor is part-load efficiency. Large buildings such as data centers, hospitals, industrial plants, and commercial complexes rarely operate at full load all the time. Aurashu water-cooled screw chillers are designed with excellent part-load performance, supported by advanced screw compressors, intelligent capacity control, and optimized heat exchanger design. This allows the system to precisely match cooling demand, minimizing energy waste during off-peak operation. When combined with variable frequency drives (VFDs) and smart control algorithms, energy savings can be further enhanced.

System integration also plays a crucial role. Water-cooled chillers are typically part of a centralized cooling system that includes cooling towers, chilled water pumps, and building automation systems (BAS). Aurashu designs its water-cooled chiller solutions to seamlessly integrate with intelligent control platforms, enabling real-time monitoring, load optimization, and energy management. By optimizing the operation of the entire system—not just the chiller—Aurashu helps clients achieve lower total energy consumption and reduced operating costs.

Additionally, water-cooled chillers generally have a longer service life and more stable performance. Lower operating pressures and temperatures reduce mechanical stress on compressors and key components, maintaining high efficiency over many years of operation. This long-term stability means that efficiency does not degrade as quickly as in air-cooled systems, resulting in better lifecycle energy performance.

In summary, water-cooled chillers are more energy-efficient due to superior heat transfer, stable operating conditions, excellent part-load efficiency, and system-level optimization. Aurashu leverages these advantages through advanced engineering, high-quality components, and customized solutions, delivering reliable, energy-saving cooling for demanding commercial and industrial applications.