增压双效氨水吸收制冷循环中分流比的确定与分析  

Determination and analysis of diversion ratio in boosting double-effect ammonia-water absorption refrigeration cycle

作　　者：蔡星辰[1] 杜垲[1] 李彦军[1] 

机构地区：[1]东南大学能源与环境学院,南京210096

出　　处：《东南大学学报（自然科学版）》2012年第6期1127-1131,共5页Journal of Southeast University：Natural Science Edition

基　　金：国家自然科学基金资助项目(51176029)

摘　　要：提出了一种可以降低驱动双效氨水吸收制冷循环热源温度的增压双效氨水吸收制冷循环,对该循环进行了理论分析,阐明该循环高温级回路与低温级回路之间存在一最佳的分流比.计算分析了增压比、制冷温度、热源温度、冷却水温度等因素变化对该循环分流比的影响规律.结果表明:该循环最佳的分流比随着增压比和制冷温度的升高而降低,随着冷却水温度的升高而增大,而热源温度对其影响存在一个临界温度,热源温度小于此临界温度时,分流比随热源温度的升高而增大,热源温度大于此临界温度时,循环分流比基本不变.所得结论可为增压双效循环的设计、运行调节等提供参考依据.A boosting double-effect ammonia-water absorption refrigeration cycle is proposed that can lower the heat source temperature of double-effect ammonia-water absorption refrigeration cycle.Theoretical analysis of this cycle is made to demonstrate that an optimal diversion ratio exists between high temperature stage and low temperature stage.Influences of changes in pressurization ratio,refrigeration temperature,heat source temperature and cooling water temperature on the determination of diversion ratio are calculated and analyzed.The results show that the optimal diversion ratio in the cycle decreases with the increase of pressurization ratio and refrigeration temperature,and increases with the increase of cooling water temperature,while heat source temperature has a critical temperature value.When the heat source temperature is lower than the critical value,the optimal diversion ratio increases with the increase of heat source temperature,otherwise,the optimal diversion ratio is almost unchanged.The results provide a reference for the design and operation of the boosting double-effect ammonia-water absorption refrigeration cycle.

关 键 词：氨水吸收 增压 双效 分流比 

分 类 号：TB61[一般工业技术—制冷工程]