摘要
为提高余热发电的经济性,提出余热热水发电的两级能量转换系统,并建立了该系统的两级闪蒸和两级双工质循环的热力计算的数学模型;对电站的功率和效率进行了计算,以此对单级及两级能量转换系统进行了比较。结果表明:在计算所给的热水温度(100～200℃)和冷凝温度下,两级闪蒸比单级闪蒸的发电量多24.8%～31.2%;两级双工质循环比单级双工质循环的发电量多14.5%～24.0%;两级闪蒸比两级双工质循环的发电量多7.2%～67.5%。
In order to improve the economy of waste heat power generation, this paper suggests twostage energy conversion systems for power generation from waste hot water, and set up the mathematic model of thermodynamic calculation for two-stage flash system and two-stage binary cycle. With these mathematic models, capacity and efficiency of the power plants are calculation, by which, the comparison between single stage and two stage energy conversion system is carried out. The comparison result indicates that, the hot water temperature of 100-200 ~C and at condensation temperature, two-stage flash system is higher than single-stage flash system by 24.8%-31.2% in power generation, two-stage binary cycle is higher than single-stage binary cycle by 14.5%-24.0% in power generation, while two-stage flash system is higher than two-stage binary cycle by 7.2%-67.5% in power generation.
出处
《可再生能源》
CAS
北大核心
2010年第5期91-95,共5页
Renewable Energy Resources
基金
国家高技术发展计划"863"项目(2007AA05Z442)
关键词
余热热水发电
两级能量转换系统
闪蒸系统
双工质循环
waste hot water power generation
two-stage energy conversion system
flash system
binary cycle
作者简介
吴志坚（1928-），男，研究员，主要从事地热发电技术的研究开发工作。
通讯作者：龚宇烈（1978-），男，博士，主要从事中低温地热发电技术的研究。E-mail：gongyl@ms．giec．ac．cn
