一种低温余热驱动的新型功冷联供系统  

A Novel Power/Cooling Cogeneration System Driven by Low-grade Waste Heat

作　　者：殷纪强 于泽庭[1] 张承刚[2] 田民丽 赵红霞[1] 韩吉田[1] YIN Jiqiang;YU Zeting;ZHANG Chenggang;TIAN Minli;ZHAO Hongxia;HAN Jitian(School of Energy and Power Engineering, Shandong University, Jinan 250061, Shandong Province, China;Energy Saving Office, Shandong Youth University of Political Science, Jinan 250103, Shandong Province, China)

机构地区：[1]山东大学能源与动力工程学院,山东省济南市250061 [2]山东青年政治学院节能办公室,山东省济南市250103

出　　处：《中国电机工程学报》2018年第9期2679-2686,共8页Proceedings of the CSEE

基　　金：国家自然科学基金项目(51541604,51376110);国家自然科学基金重大国际(地区)合作研究项目(61320106011)~~

摘　　要：为了充分利用低温余热,提出了一种以氨水为工质的新型功冷联供复合循环系统,该系统以Goswami循环为基础,耦合了氨吸收/喷射式制冷方式。该新型功冷联供系统可显著提高Goswami循环的制冷能力,在改变分流比时,还能实现系统输出冷功比连续可调。通过热力学建模对系统进行模拟计算,结果表明,在给定工况下该新型功冷联供系统的联供热效率为12.16%,联供？效率为19.05%,系统？损失主要集中在换热器、精馏器、锅炉这3个部件。分析了吸收器温度、循环压力、锅炉出口氨蒸气温度、分流比这些关键参数对联供系统输出功、制冷量、联供热效率以及联供？效率的影响。In order to recovery low temperature waste heat in a more useful way, a novel ammonia-water power and cooling cogeneration system was proposed and investigated. The system which was based on Goswami power/cooling cogeneration system can improve the refrigerating capacity by coupling the ammonia absorption-ejector refrigeration, and it can also continuously adjust the cooling-to-power ratio only by changing the split ratio. A mathematical model was developed to simulate the system performance and the results show that the combined thermal efficiency is 12.16% and the combined exergy efficiency is 19.05%, under the given condition, respectively. The exergy destruction mainly occurs in the recovery heat exchanger, rectifier and boiler. Parametric study shows that the absorber temperature, cycle highest pressure, ammonia vapor temperature at boiler outlet, cycle lowest pressure and separate ratio have significant effects on the net work output, total refrigeration output, combined thermal efficiency and combined exergy efficiency.

关 键 词：氨水溶液 Goswami循环 热力学 功冷联供 循环耦合 

分 类 号：TQ021[化学工程]