Water cooler WZY Series

While energy consumption is a common disadvantage of water-cooled screw chillers, the WZY Series breaks the mold. Using R134a refrigerant and offering cooling capacities ranging from 102-520RT (358kW-1,830kW), this series boasts high-efficiency cooling operation with a COP of up to 5.79. By reducing electricity consumption, the WZY Series not only minimizes its environmental impact but also helps keep energy bills low. Upgrade to the WZY Series for a more sustainable and cost-effective cooling solution. Hitachi proprietary G-Type Semi-Hermetic Twin-Screw Compressor New rotor design decreases internal leakage of refrigerant during the compression process, and is manufactured by the most advanced abrasive process equipment offering the least friction and high plot ratio under the film seal, which means low vibration and noise. This unique design offers several benefits: • Precise capacity modulation, enabling unit capacity scaling down from 100% to 20% (300 ton with twin comp. unit) • Frequency modulation from 0 to 50 Hz, with combining slide valve and VFD driver • Double-casing design reduces operating noise • Capacity adjusting valve automatically resets to the minimum load decreasing the starting current • Internal motor without couplings prevents discharge of refrigerant, while lowering fault rate and prolonging the service life Cyclone Oil Separator The adoption of centrifugal oil separator compared with a traditional filter type oil separator, ensures there is no resistance produced by the oil filter net, therefore reducing energy consumption of the compressor.