Running performance of low-temperature air-source heat pump applied in winter of Beijing

Tests an air-source heat pump with a compensating scroll compressor of quasi two-stage compression in an office building of Beijing during nearly the whole heating season of 2013. By analysing the heating capacity, energy consumption and other performance parameters, concludes that the air-source heat pump has been running steadily during the testing period, and the average temperature of supply water is 42.0 ℃, and heating seasonal performance factor (HSPF) is about 3.20 kWh/kWh. The coefficient of performance can remain more than 2.8 kWh/kWh when outdoor temperature is -8 ℃, which proves that the air-source heat pump with scroll compressor of quasi two-stage compression shows good running performance as heating device in Beijing.