电压缩式制冷循环与吸收式制冷循环的热力学比较分析

采用效率与损失分析方法,计算比较了电压缩式制冷循环与单效吸收式制冷循环的效率及两种制冷循环在典型工况下各环节的损失。结果表明,当采用合适的发生器温度和热源温度时,两种制冷循环的效率基本相同;电压缩式制冷循环的主要损失发生在压缩机环节,吸收式制冷循环的主要损失发生在吸收器和发生器。讨论了两种制冷循环的改进途径。

Thermodynamical comparison and analysis of electric compression refrigeration cycle and absorption refrigeration cycle

Applying the exergy efficiency and exergy loss analysis method,calculates and compares the exergy efficiency between the electric compression refrigeration cycle and the single-effect absorption refrigeration cycle and the exergy losses of each part of the two cycles under the typical condition.The results show that the exergy efficiency of the two cycles is basically the same when the generator temperature and the heat source temperature are appropriately selected;most part of exercy losses of the electric compression refrigeration cycle occur in the compressor,and most part of exercy losses of the single-effect absorption refrigeration cycle occur in the absorber and generator.Discusses the improving methods for the two cycles.