Air source heat pump(ASHP)has been widely used in Northern China for central heating.However,there is few research on its regulating modes till now.To im-prove the energy-saving effect of AHSP,a simulation model considering the energy loss caused by frosting/defrosting and on-off,is developed.Based on this model,three regula-ting modes suitable for ASHP are proposed.Then the central heating systems in Beijing and six other cities are investigated using this model.The results show that both the ener-gy loss corrections of frosting/defrosting and on-off have evident impacts on the power consumption and seasonal coefficient of performance(SCOP);the power consumption of unit is increased by 3.85％-17.41％,and SCOP of unit is decreased by 3.72％-14.83％caused by frosting/defrosting correction.The influence of the energy loss caused by on-off decreases gradually with the increase of heating area.Using different regulating modes,power consumption of ASHP unit changes slightly,while the energy-saving rate of water pump could reach 80.97％-86.46％,and the energy-saving rate of system could reach 8.47％-11.87％.
air source heat pumpcentral heatingenergy loss correction of frosting/defrostingenergy loss correction of on-offregulating
NETL
NSTL
万方数据
