Thermodynamic Comparison among Double-Flash, Flash-Kalina and Flash-ORC Geothermal Power Plants

被引：5
作者：
Cao, Liyan [1 ]
Wang, Jiangfeng [1 ]
Zhao, Pan [1 ]
Dai, Yiping [1 ]
机构：
[1] Xi An Jiao Tong Univ, Sch Energy & Power Engn, Xian 710049, Peoples R China
来源：
INTERNATIONAL JOURNAL OF THERMODYNAMICS | 2016年 / 19卷 / 01期
基金：
高等学校博士学科点专项科研基金;
关键词：
Double-flash; flash-Kalina; flash-ORC; geothermal energy; thermodynamic analysis;
D O I：
10.5541/ijot.5000156088
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The geothermal energy is renewable energy, which is viewed as a promising alternative to fossil energy. This paper conducts a comparative study among double-flash, flash-Kalina and flash-ORC geothermal power plants. The mathematical models of three different geothermal power plants are established. And parametric analyses are performed to examine the effect of some key parameters on system performance. The performance of each cycle has been discussed in terms of the net power output, thermal efficiency and exergy efficiency. Moreover, genetic algorithm ( GA) is used to conduct optimization to obtain the best performance of three different geothermal power plants. Flash-ORC geothermal power plant yields the highest exergy efficiency of 46.121%. Exergy efficiency of Flash-Kalina geothermal power plant is 36.747%, but the inlet pressure of ammonia-water turbine is much higher than that of organic turbine and steam turbine. Double-flash has the lowest exergy efficiency of 31.922%.
引用
收藏
页码：53 / 60
页数：8
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