摘要
用热力学方法研究了塔式太阳能热发电中冷回热再热三级不可逆闭式燃气轮机循环的功率和效率.通过数值分析方法,计算了中冷度、回热度对循环最优功率、最优效率及其中间压比分配的关系.与闭式中冷回热燃气轮机循环的功率和效率比较,最大平均功率、最优功率和最优功率效率都有很大的提高.
Finite - time er output, the efficiency thermodynamics was applied to analyze the characteristics of the ycle dimensionless pow- and the optimal intercooling pressure ratio of an irreversible closed intercooling and re- generated Brayton cycle coupler to constant - temperature heat source. The analytic expressions of the dimension- less power output and the efficiency were deduced. The effects of the intercooling exchanger and the regenerator on the optimal cycle power output, the optimal cycle efficiency and the corresponding intercooling pressure ratio of the Brayton cycle were calculated. Compared with the power and efficiency of the closed intereooled regenera- ted gas turbine cycle with a maximum average power from 0.58 to 4.78, the efficiency increased from 0.26 to 0. 66, with the optimal power and the optimum power efficiency greatly improved.
出处
《绍兴文理学院学报》
2012年第9期21-24,共4页
Journal of Shaoxing University
关键词
有限时间热力学
不可逆
燃气轮机循环
中冷
回热
再热
finite - time thermodynamics
irreversible
Brayton cycle
intercooled
reheating
regenerated
