小型热电站热电联产分析及节能评价

The evaluation of energy─saved operation and the exergy analysis of the united thermal power system of producing heating energy and electric power in small power stations

采用平衡分析法，分别对小型热电联产系统和分散锅炉房供热系统进行了流分析，把两者计算所得效率作一对比，从而得出热电联产系统是取代分散锅炉房供热的节能措施之一。同时还对热电联产系统内各环节中的流损失进行计算，得出各热力设备的效率，找出系统用能不合理的主要薄弱环节，为今后设备的工艺过程改进指出了方向。

This paper calculates the exergy of the whole thermal power system in small power station, and gets the conclusion of energy saving by comparing the exergy efficience of the united thermal system of producing heating energy and electric power with that under the sperate conditions. At last we point out that the exergy analysis is the accurate way to find out the exergy lose of the thermal power system,and it also provides the direction to optimize the device of the thermal power system.