摘要
结合Kalina循环系统的工作原理,采用EES软件平台编制计算软件,并完成了系统循环过程的模拟计算,计算结果与实际运行参数吻合较好。在此基础上,对Kalina地热发电循环进行分析,从冷凝水温度、汽轮机入口压力以及氨的质量浓度等方面研究对循环效率的影响。结果表明,系统循环效率随着汽轮机入口压力存在峰值,随基本溶液中氨的质量浓度的升高而升高,但氨的质量浓度过高就要求发生器换热面积过大,造成系统整体经济性下降。此外,还对汽轮机的安全运行进行了分析。
Based on the principle of Kalina cycle system, a computing program simulating the cycle process was eompiled by EES software, and the results have a good agreement with the actual operating parameters. The influence factors such as condensate temperature, turbine inlet pressure, ammonia mass friction, etc were analyzed using the software. The results showed that the cycle efficiency increases with the turbine inlet pressure at first, and then decrease, which indicates that there exists a peak value, and the cycle efficiency increases with the increasing of mass fraction of ammonia, however, excessively high mass fraction will results in large heat exchanger area which decline the economy. In addition, the safe operation of turbine was analyzed.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2014年第2期326-331,共6页
Acta Energiae Solaris Sinica
基金
天津市自然科学基金面上项目(13JCYBJC19200)
国家高技术研究发展(863)计划(2012AA053001)
作者简介
通信作者：张伟（1976～），男，博士、副教授，主要从事低焓地热资源的工程应用方面的研究。zhang_wei@tin．edu．cn
