寒冷地区热风机与空气源热泵采暖效果分析

Analysis of Heating Effect for Air Heater and Air Source Heat Pump in Cold Region

“双碳”目标下,清洁能源替代化石能源采暖具有重要意义,消耗少量高品位电能的热泵从环境中吸取低品位热能并传输给高温热源,无疑是一种极佳的清洁采暖方式。热泵产品品类繁杂,进行寒冷地区住宅经济高效热泵设计方案对比研究十分必要。对分体热风机与户式空气源热泵采暖进行实验和仿真分析,得出:随着环境温度的降低,热风机、空气源热泵采暖-20℃较2℃外环COP同比下降29.67%、41.06%,低温运行时热风机较二次换热的户式水机更具节能优势;仿真分析表明:0℃工况房间最大得热量下热风机室温较暖气片散热高3.92℃;0℃工况维持室温20℃时热风机室内温度场较暖气片更均匀,仿真与实测结果吻合度较高。

Under the goal of"double carbon"。it is of great significance to replace fossil energy heating with clean energy.Heat pumps that consume a small amount of high-grade electric energy absorb low grade beat from the enviroment and transmit it to high-temperature heat sources,which is undoubtedly an excellent clean heating mode.The categories of heat pump are complex。it is necessary to conduct a comparative study on the design schemes of cost-effective heat pumps in cold regions.In this paper,the air heater(ATAHP)and air source heat pump(ATWHP)are tested and simulated.It is concluded that with the decrease of ambient temperature,the COP at-20℃is 29.67%and 41.06%lower than that at 2℃,and the air heater has more energy saving advantages than the household pump with secondary heat exchange at low temperature;The simulation analysis shows that the room temperature of the air heater is 3.92℃higher than that of the radiator;The indoor tenperature field of air heater is more uniform than that of the radiator,and simulation results agree well with measured results.