摘要
空气源热泵因其供热效率高而得到广泛应用,但是室外换热器的结霜问题导致了其供热效率的下降。针对空气源热泵室外换热器单管的融霜过程,搭建了单翅片管融霜实验台,使该单根翅片管分别以结霜和融霜2种模式运行。融霜过程分别选择40,30,20,10,5℃的循环溶液,同时对融霜过程进行理论分析。试验以及理论分析结果表明:在不同的循环溶液温度下,随着循环溶液温度的升高,融霜速率逐渐增加且变化趋势加快;循环溶液温度的高低对融霜过程产生程度不同的影响,存在最佳循环溶液温度,可以使得除霜效率达到最高。
Air source heat pump has a very wide range of applications,but the frost accumulation of outdoor heat exchanger in winter restricts the use of it.For the defrosting process of single-tube of air source heat pump outdoor heat exchanger,an experi-ment table is built.The single tube is transformed into the frosting and defrosting model respectively by controlling the switch of the three-way valve.In defrosting process,the temperature of circulating solution is changed to 40℃、30℃、20℃,10℃、5℃,at the same time,theoretical analysis is carried out for the defrosting process.The experiment results and theoretical analysis show that the higher the temperature of the circulating solution,the better the defrosting rate;the temperature of the circulating solution has effect on the defrosting process,and the defrosting efficiency is highest at the best circulating solution temperature.
出处
《流体机械》
CSCD
北大核心
2016年第6期66-71,共6页
Fluid Machinery
基金
上海市自然科学基金项目(13ZR1401500)
关键词
空气源热泵
单管
融霜
试验
air source heat pump
single tube
defrosting
experiment
