有机朗肯循环与吸附制冷串级连接的可行性研究  

The Feasibility Research About Cascaded Connection Between ORC with Adsorption Refrigeration

作　　者：高鹏[1] 宋分平 王丽伟[1] 江龙[1] 王如竹[1] 

机构地区：[1]上海交通大学制冷与低温工程研究所,动力机械与工程教育部重点实验室,上海200240

出　　处：《工程热物理学报》2015年第1期11-16,共6页Journal of Engineering Thermophysics

基　　金：国家优秀青年科学基金项目(No.51222601);上海市浦江人才计划;上海市科委国际合作项目(No.11160706000)

摘　　要：提出了一种新型串级连接,即将有机朗肯循环(ORC)与氯化钙/氯化钡两级吸附式制冷机组串联起来。ORC系统工质选为R245fa,假设等熵效率与功电转化效率乘积为0.4,当膨胀机进口压力从0.6 MPa变化到1.1 MPa,能量效率、效率、发电量变化范围分别是3.9%~5.5%、34%~31.5%、392~600 W,如果增加回热器后,能量效率从4.2%变化到6.0%;利用压缩空气模拟工质R245fa推动膨胀机,当进口压力为1 MPa时,膨胀机的等熵效率与功电转化效率乘积是0.53,发电量为300 W;两级吸附式制冷系统,当热源温度从75℃变化到95℃,制冷量、能量效率及媚效率变化范围分别是1.42~2.2 kW、13.4%~16.8%、18.1%~16.6%;有机朗肯循环与两级吸附制冷串连起来,热源温度为98℃时,系统总的能量效率为11.8%,媚效率为23.7%,发电量为560 W,制冷量是2.2 kW.A novel cascaded connection that Organic Rankine Cycle(ORC) with working fluid R245 fa is connected to CaCl_2/BaCl_2 two stage adsorption refrigeration is proposed.Assumed that the product between isentropic efficiency and work-power efficiency is 0.4,the performance of ORC system is analyzed.When the inlet pressure of the expander change from 0.6 MPa to 1.1 MPa,energy efficiency,exergy efficiency and power generation are 3.9%~5.5%,34%~31.5%,392~600 W.If the internal heat exchanger is added,energy efficiency is from 4.2%to 6.0%.Compressed air that simulates the R245 fa is used to drive the expander,when the inlet pressure of expander is 1 MPa,the product between isentropic efficiency and work-power efficiency is 0.53,and the power generation is 300 W.When the heat source temperature changes from 75℃ to 95℃,cooling power,energy efficiency and exergy efficiency of CaCl_2/BaCl_2 two stage adsorption refrigeration are 1.42~2.2 kW,13.4%~16.8%and 18.1%~16.6%.When ORC is connected to two stage adsorption refrigeration and the temperature of heat source is 98℃,the energy efficiency,exergy efficiency,power generation and cooling capacity of the total system are 11.8%,23.7%,560 W and 2.2 kW.

关 键 词：有机朗肯循环 氯化钙/氯化钡两级吸附式制冷 串级连接 

分 类 号：TB65[一般工业技术—制冷工程]