铝电解烟气余热发电系统工质选择  

The selection of working fluid for power generation system using waste heat from aluminium reduction cells

作　　者：周乃君[1] 罗亮[1] 王志奇[1] 

机构地区：[1]中南大学能源科学与工程学院,湖南长沙410083

出　　处：《轻金属》2010年第4期61-64,共4页Light Metals

基　　金：湖南省科技计划重点项目(2009GK2009)

摘　　要：介绍了基于有机朗肯循环的铝电解槽烟气余热发电系统,并对系统工质进行了选择。结果表明:系统工质需具备良好的循环效率、换热性能、化学稳定性、环保性、适中的工作温度和压力、价格低廉以及低的毒性,且宜采用"干流体"或"等熵流体"作为循环工质;经热力计算表明:R123、R134 a和异戊烷三种备选工质中,以R123作为工质时,汽轮机内效率和系统总效率最高,故应优先考虑采用R123作为系统工质。Based on Organic Rankine Cycle,power generation system using low temperature waste heat from aluminum reduction cells was introduced and its working fluid was selected.The results indicate that a desirable working fluid for the system should be able to fulfill the following characteristics: high cycle efficiency,high thermal conductivity,chemical stability,environment-friendly,moderate working temperature and pressure,low cost and non-toxic.Dry fluid and isentropic fluid are better choice for the system.The...

关 键 词：铝电解槽 余热发电 有机朗肯循环 工质 

分 类 号：TM617[电气工程—电力系统及自动化]