摘要
将闪蒸系统发电与双工质循环发电联合,形成一种特殊的能量转换系统,对其进行详细分析,并建立该联合地热电站热力计算的数学模型,以此对电站的功率及效率进行了计算与分析,从中确定该系统的最佳闪蒸温度和由此温度导出的最佳设计参数。计算结果还表明,对给定温度为110℃的地热水资源,当环境冷却水平均温度为28℃时,闪蒸-双工质循环联合发电的最大总功率比闪蒸系统或双工质循环单独发电时的最大功率要大20%以上。此外,电站还生产约60℃的热水以供直接利用。
A Special energy conversion system of geothermal power generation by flash system combined with binary cycle and suggests a mathematic model of thermodynamic calculation for such combined geothermal power plants has been analyzed detailedly. With such mathematic model, capacity and efficiency of the power plants were calculated, and the result was plotted into a diagram, by which the optimum flash temperature for combined power generation system and the optimum design parameters derived from such temperature were determined. As also shown by the calculation result, for a geothermal water resource of 110℃, when the average temperature of cooling water from the environment is 28℃, the maximum total capacity of flash system combined with binary cycle is by at least 20% higher than that of the maximum capacity of sole flash system or binary cycle. Moreover,the power plants also produce hot water of about 60℃ for direct use.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2009年第3期316-321,共6页
Acta Energiae Solaris Sinica
基金
国家高技术研究发展计划(863)项目(2007AA05Z442)
关键词
闪蒸系统
双工质循环
地热发电
最佳闪蒸温度
flash system
binary cycle
geothermal power generation
optimum flash temperature
