Performance analysis of ammonia-water absorption/compression combined refrigeration cycle  

氨水吸收/压缩复合制冷循环性能分析(英文)

作　　者：鲍帅阳[1] 杜垲[1] 蔡星辰[1] 牛晓峰[2] 武云龙[1] 

机构地区：[1]东南大学能源与环境学院,南京210096 [2]南京工业大学城市建设与安全工程学院,南京211816

出　　处：《Journal of Southeast University(English Edition)》2014年第1期60-67,共8页东南大学学报（英文版）

基　　金：The National Natural Science Foundation of China(No.51176029)

摘　　要：In view of different compressor adding ways in the ammonia-water absorption/compression combined refrigeration AWA /CCR cycle combining the Schulz state equation of the ammonia-water solution the theoretical analysis and calculations on two combination ways by adding the compressor in the high-pressure area and in the low-pressure area are conducted respectively.The effects of several factors including the evaporation temperature Te heat-source temperature Th as well as the cooling water temperature Tw on the equivalent heat consumption in compression qCW heat consumption in absorption qG and the system coefficient of performance COP are analyzed under the two combination configurations.The results show that the effect of the equivalent heat consumption in compression on the COP is less than that of the heat consumption in absorption.Besides the compressor set in the high-pressure area uses more energy than that in the low-pressure area. Moreover the compressor in the low-pressure area is superior to that in the high-pressure area with respect to the COP. Under the given intermediate pressure there is an optimum heat-source temperature corresponding to the maximum COP of the AWA/CCR cycle.针对氨水吸收/压缩复合制冷循环的方式不同,结合Schulz氨水溶液状态方程,分别对压缩机处于系统高压区和低压区2种不同的组合方式进行了理论分析计算.分析了在给定中间压力下,蒸发温度Te、热源温度Th和冷却水温度Tw对2种组合方式下压缩机当量热耗量qCW、热源耗热量qG和循环性能系数COP的影响.结果表明:压缩机当量热耗量对循环性能系数的影响要低于热源耗热量的影响;压缩机处于系统高压区时循环的一次用能量要明显高于压缩机处于系统的低压区;压缩机处于系统低压区时循环性能要优于压缩机处于系统的高压区.当中间压力给定时,存在一个最佳热源温度,使得氨水吸收/压缩复合制冷循环的性能系数取得最大值.

关 键 词：AMMONIA-WATER ABSORPTION compression refrigeration combined refrigeration cycle coefficient of performance COP 

分 类 号：TB616[一般工业技术—制冷工程]