摘要
利用闭式热泵干燥系统研究了50℃下海棠果的干燥曲线,并对干燥过程中热泵系统进行了能量分析和?分析。新鲜海棠果干燥300min后其含水率由672%下降至194%,同时,系统的单位能耗除湿量也由1.99kg/kW下降至0.11kg/kW,且其趋势几乎与干燥速率的变化一致。通过对系统各部件进行?损失和?效率计算,发现压缩机和干燥箱处的损失比例较大。
We investigated the drying curve of plum-leaf crab at 50 in a closed-loop heat pump dryer, and analyzed the energyand exergy efficiencies of the system. The fresh plum-leaf crab with initial moisture content of 672% was dried down to 194% drybasis after 300 minutes. And the SMER decreased from 1.99kg/kW to 0.11kg/kW, which was accordance with the drying rate ofplum-leaf crab. By the analysis of exergy destruction and efficiency, we found that the compressor and drying chamber were thekey point to improve the whole efficiency of system.
出处
《制冷与空调（四川）》
2018年第1期86-90,共5页
Refrigeration and Air Conditioning
关键词
能量分析
㶲分析
闭式热泵干燥系统
海棠果
energy analysis
exergy analysis
closed-loop heat pump dryer
plum-leaf crab
