Experimental studies on a combined refrigeration/power generation system activated by low-grade heat
An experimental rig of a combined refrigeration/power generation system was built and investigated.This rig uses an ammonia–water binary working fluid,is driven by low-grade heat,and can function under the absorption refrigeration model and absorption power generation model.When the system was operated under the refrigeration model,the temperatures of the ethylene glycol solution that entered and exited the evaporator were –5.28 oC and –9.07 oC,respectively.The cooling output was 11.67 kW,and the corresponding coefficient of performance was 0.465.When the system was operated under the power generation model,the temperature and pressure of the turbine inlet were 94.7 oC and 8.55 bar,respectively.The turbine outlet pressure was 1.79 bar,the net power output was 1.02 kW(after 1 kW of power consumed by the solution pump was reduced),and the corresponding heat-to-power conversion efficiency was 3.98%.
Ammonia-water binary mixture Absorption refrigeration system Absorption power generation system Low-grade heat
Wei Han Chen Qiang Liuli Sun Sijun Ma Ting Zhao Danxing Zheng Hongguang Jin
Institute of Engineering Thermophysics,Chinese Academy of Sciences,P.O.Box 2706,Beijing 100190,PR Ch Institute of Engineering Thermophysics,Chinese Academy of Sciences,P.O.Box 2706,Beijing 100190,PR Ch School of Chemical Engineering,Beijing University of Chemical Technology,P.O.Box 100,Beijing 100029,
国际会议
桂林
英文
1-13
2013-07-16（万方平台首次上网日期，不代表论文的发表时间）