低沸点工质在余热利用中的应用分析  

Application analysis of low boiling point working medium in waste heat utilization

作　　者：赵云凯[1] 娄晓静[2] 李晓刚 

机构地区：[1]中北大学机械与动力工程学院,太原030051 [2]中北大学朔州校区,山西朔州036000 [3]重庆长安汽车股份有限公司,重庆400023

出　　处：《黑龙江电力》2015年第1期79-81,85,共4页Heilongjiang Electric Power

摘　　要：针对火力发电厂烟气排放带走大量余热的问题,阐述了低沸点工质选择依据及利用特性,提出了利用低沸点工质对烟气余热进行回收使之发电的方案,通过计算确定了系统相关参数,分析了低沸点工质发电系统的经济性、节能性及环保效益。分析结果表明,利用低沸点工质进行发电利用了烟气余热,可以有效节约煤炭消耗量,提高锅炉热效率。Aiming at the lm-ge amount of lost of waste heat due to flue gas emission in thermal power plant, this pa- per expounds the selection basis and utilization characteristics of low boiling point working medium, proposes to generate by the recovered flue gas waste heat through low boiling point working medium, determines the relevant parameters of system through calculation, and analyzes the economy, energy saving capability and environmental protection benefit of the low boiling point working medium power system. The result of analysis shows that genera- ting by low boiling point working medium can not long take the advantage of flue gas waste heat, but effectively save coal and enhance boiler thermal efficiency as well.

关 键 词：低沸点工质 余热利用 发电 效益分析 

分 类 号：TK115[动力工程及工程热物理—热能工程]