低温空气源热泵采暖机两种流路性能和除霜效果对比分析

A Comparative Study of the Performance and Defrosting Effects of Two Different Circuits of Low Temperature Air Source Heat Pump Heat Exchanger

对低温空气源热泵翅片换热器重力流路和混合流路两种典型流路分布在名义制热、低温制热、制冷方面,特别是在非稳态化霜方面的表现做了实验对比分析,两种流路在名义制热、低温制热、制冷方面的性能表现差异不大,但在除霜效果方面差异较大,重力流路分布方式明显好于混合流路。

A comparative experimental study of gravity flow and mixed flow path of low temperature air source heat pump fin heat exchanger are carried out,and the two flow paths were distributed in nominal heat,low temperature heat,and refrigeration,especially in non-steady state frosting.The performance of the two flow paths in nominal heat,low temperature and cooling were not of many differences.However,in view of defrosting effect,the distribution of gravity flow path is obviously better than that of mixed flow path.