Application of high-efficient centrifugal heat pump to centralized heat supply system

Applying centrifugal heat pumps to recycle the industrial waste heat for the centralized heating has a great significance to meet the growing heating demand and realize energy saving. The permanent-magnetic synchronous frequency-convertible (PSF) centrifugal heat pump applies many key technologies, and its COP is much higher than that of traditional centrifugal heat pumps. The application results of a centralized heating project show that the COP of the 1 759 kW PSF centrifugal heat pump reaches 7.0, and the total COP of the heat pump system reaches 4.8, which is higher than that of a large-scale heat and power cogeneration system.