中文摘要：

有机朗肯循环低温热力循环性能优越，易于小型化和自动运行，非常适合于分布式热电联供系统。依托已有的ORC-CHP实验平台，对热源温度101℃，膨胀机乏汽余热利用温度21．6～48．7℃时系统的热力性能进行了实验研究。在该温度范围内，ORC-CHP系统的综合能量效率96％～97％，其中热功转换效率4．4％～5．1％，乏汽余热利用效率91％～92％；从可用能角度出发，系统综合可用能效率50．0％～75．3％，其中热功可用能效率24．4％～19．2％，乏汽余热可用能效率25．7％～56．2％。实验表明该系统可以高效利用膨胀机乏汽余热，明显提高了有机朗肯循环的综合利用效率。

英文摘要：

Organic Rankine cycle （ORC） has excellent low temperature performance, which is very suitable for combined heat and power （CHP） system. An experimental study is carried out to test the performance of an ORC-CHP system, with the temperature of heat source at 100℃ and that of turbine waste heat in the range of 21.6--48.7℃. The overall energy efficiency of ORC-CHP 96%--97%, power efficiency 4.4%--5.1%, and hot water heat gain efficiency 91%--92% are obtained. Overall exergy efficiency is 50. 0%--75.3%, with power output exergy efficiency 5.1%--4.4% and hot water gain exergy efficiency 25.7%--56.2%. ORC-CHP system can utilize waste heat efficiently, so that both energy and exergy usage are greatly improved.