RESEARCH ON HEATING PERFORMANCE OF AIR SOURCE HEAT PUMP SYSTEM UTILIZED IN SMALL RESIDENTIAL BUILDINGS

摘要

In order to estimate the heating performance of air source heat pump system utilized in small residentialbuildings, experimental tests were taken to explore the variation of condensing pressure, condensingtemperature, evaporating pressure, evaporating temperature, power consumption, heating capacity and COPwith changing the indoor dry-ball temperature and outdoor dry-ball temperature. .The results showed that,under the same outdoor dry-ball temperature, with the indoor dry-ball temperature increase, the condensingpressure, condensing temperature and power consumption increased, but the heating capacity and COPdecreased，if dry-bulb temperature of indoor air increases by 1°C, following is a decrease of 1.62% in heatingcapacity and 1.27% in COP. Under the same indoor dry-ball temperature, the evaporating pressure,evaporating temperature, heating capacity and COP increased, but the power consumption decreased, ifdry-bulb temperature of outdoor air increases by 1°C, following is an increase of 1.75% in heating capacityand 2.23% in COP.