Development status and trend of centrifugal chillers in China
Liu Hua1,2, Zhang Zhiping1,2, Wang Sheng1,2, Zhou Yu1,2
This paper reviews the development process of the centrifugal chiller market, especially the domestic brands in China. The developments of main energy efficiency improvement technologies of centrifugal chillers over the past 20 years are summarized, including permanent magnet motor and frequency conversion drive, magnetic or air suspension bearing, aerodynamic efficiency enhancement of compressors, etc. The application trends of environmentally friendly refrigerants are analysed from different paths, such as medium pressure refrigerant, negative pressure refrigerant and natural refrigerant. Under the background of double-carbon strategy, the application prospects of centrifugal chillers in photovoltaic direct drive air conditioning systems and high temperature heat pumps are prospected.