蓄热型空气源热泵直凝式地暖系统除霜模式研究

Study on Defrosting Mode of Thermal Storage Air Source Heat Pump for Direct Floor Radiant Heating System

文章介绍了一种蓄热型空气源热泵直凝式地暖系统,并对其除霜模式进行了实验研究。通过实验测试,分别对两种除霜模式下压缩机的吸气压力,排气压力,地暖填充层表面平均温度和室内环境平均温度进行对比分析。实验结果表明在蓄热除霜模式下压缩机的吸气压力和排气压力高于常规逆循环除霜模式,有利于稳定除霜过程,提高冷凝温度,缩短除霜时间,并且填充层表面温度和室内环境平均温度高,更有利于采暖房间的热舒适性。

This paper introduces a kind of heat storage air source heat pump for direct floor radiant heating system, and its defrosting mode was studied. Through the experimental test, the suction pressure, the exhaust pressure, the average temperature of the filling layer of the floor heating and the average temperature of the indoor environment were compared and analyzed respectively under the two defrosting modes. The experimental results show that the suction pressure and exhaust pressure of the compressor in the thermal storage defrosting mode are higher than those of the conventional reverse defrosting mode, and conductive to stabilize the defrosting process, improve the condensation temperature, and shorten the defrosting time. Furthermore, the higher temperature of the filling layer surface and the indoor environment is benefit to the room heat comfort.