【摘要】 对太阳能热气流发电系统的热力学性能进行了分析,建立了系统的热力学循环,进一步分析了系统的实际循环效率和理想循环效率,对不同规模的太阳能热气流发电系统的热力学特性进行了计算比较。结果表明:大规模太阳能热气流发电系统相应的标准布雷顿循环效率、理想循环效率以及实际循环效率分别为35%,10%～25%和0.9%～2.0%。分析结果为太阳能热气流发电技术的设计与商业应用提供了理论参考。更多还原

【Abstract】 Theoretical analysis was made on the air flow through various parts of a solar chimney power generation system and a thermodynamic cycle starting from the collector inlet,passing through collector and chimney outlet,and finally back to the collector inlet from the environment was established.Later,numerical models for ideal and actual cycle efficiencies were also established.The research results showed that the Brayton cycle efficiency,ideal cycle efficiency and actual efficiency of standard Brayton cycle corresponding to the large scale solar chimney power generation systems are 35%,10%-25%and 0.9%-2.0%.The results give a theoretical guidance to the commercial application of solar chimney power generation systems.更多还原