太阳能驱动闭式简单燃气轮机循环热力学优化

THERMODYNAMIC OPTIMIZATION OF CLOSED GASTURBINE CYCLE POWERED BY SOLAR ENERGY

研究太阳能通过换热器驱动的闭式简单燃气轮机循环有限时间热力学性能，导出内可逆循环的最佳功率与效率间的关系，并得到最大功率输出及其相应的效率界限。用压气机和涡轮内效率表征循环内不可逆性，可得实际不可逆循环的最优性能。所得结果对闭式简单燃气轮机装置热力参数的选择有一定指导意义。

inite-time thermodynamic performance of a Brayton gas-turbine plant with a heat exchanger powered by the sun is studied in this paper. The optimal relation between power output and efficiency of the endoreversible cycle is denyed and is used to obtain the efficiency bound at maximum power output point. The optimal performance of a real plant is obtained in terms of the internal efficiency of the compressor and that of the turbine. which represent the internal irreversibility of the plant. The results provide some theoretical guidance for the design of solar gas-turbine plants.