带蒸汽压缩的并联型三效溴化锂吸收式制冷循环的分析

Analysis on a Triple-effect Lithium Bromide Absorption Cycle in Parallel Solution Flow with a Vapor Compressor

为缓解基本的并联三效溴化锂吸收式制冷循环中的高温溶液腐蚀问题 ,提出了一种新型的并联型三效溴化锂吸收式制冷循环 ,即在基本的并联三效循环的中压和低压发生器之间加一个压缩装置 ,对该循环进行优化计算 ,并和基本的三效并联循环进行了对比分析。计算结果表明 ,这种新型的循环可以将循环的最高溶液温度由 2 2 2℃降至 184℃ ,循环的COP随着高发出口溶液温度的增加而增加 。

The conventional triple effect absorption chiller using the lithium bromide based working fluid has been greatly hindered by the corrosion problem caused by the high temperature. To solve the problem, a new triple effect lithium bromide absorption cycle in parallel solution flow, which is combined with an additional vapor compression device,has been carried out. The analysis based on optimization shows that it can notably reduce the highest temperature of solution from 222℃ to 184℃. The COP of the new cycle increases with increasing GH temperature, and decreases with increasing compression ratio.