可实现快速制热和除霜的蓄能型空气源热泵系统的实验研究

提出一种可快速制热和除霜的蓄能型空气源热泵系统,并在室外温度约-0.7℃,相对湿度约95％的雨雪天气条件下进行实验测试,结果表明,结霜过程中蓄热器可有效阻止室内机出风温度的下降,除霜过程中新系统的压缩机出力大,效率高.除霜用时比常规除霜缩短68％,除霜能耗比常规除霜减少51.4％,除霜末期室内机出风温度为28℃,比常规...

EXPERIMENTAL STUDY ON ENERGY STORAGE AIR SOURCE HEAT PUMP SYSTEM WITH QUICK HEATING AND DEFROSTING

This paper presented an energy storage air source heat pump system which can heat and defrost quickly. The experimental test was carried out in the outdoor conditions of-0.7 ℃ and 95% relative humidity. The results show that in the process of frosting,the heat accumulator can effectively prevent the air temperature falling of the indoor unit. In the process of defrosting,the compressor of the new system has great output and high efficiency. When using the new system,defrosting duration was shortened by 68%,and defrosting energy consumption reduced by 51.4%. The indoor air temperature is 28 ℃ at the end of the defrosting,which is 22℃ higher than that of the conventional system,bringing about no cold feeling during the defrosting. The effect of the quick heating after turning on the unit is very considerable,the heating amount of 6 minutes for the new system is about equivalent to that of 10 minutes for conventional system. Therefore,the new system proposed greatly improves the heating effect of air source heat pumps.