论文部分内容阅读
以Sunpower公司设计的先进斯特林转换器为研究对象,建立斯特林循环理论模型,运用有限时间热力学理论分析系统性能。在空间核动力装置的工况基础上,研究吸热温度对循环的影响,讨论熵理论和理论在系统优化方面的适用性,比较生态学优化准则和输出功率优化准则的优化结果。研究结果表明,提高循环吸热温度可以有效增大循环效率和输出功率,可采用熵产率和损失率进行输出功率优化,输出功率优化准则在放热温度较低时适用,当放热温度较高时,生态学优化准则更为合理。
Taking the advanced Stirling converter designed by Sunpower as the research object, a theoretical model of Stirling cycle is established, and the system performance is analyzed by the finite-time thermodynamics theory. On the basis of the working conditions of space nuclear power plant, the influence of endothermic temperature on circulation is studied. The applicability of entropy theory and theory in system optimization is discussed. The optimization results of ecological optimization criterion and output power optimization criterion are compared. The results show that increasing the circulating endothermic temperature can effectively increase the cycle efficiency and output power, and the entropy yield and loss rate can be used to optimize the output power. The output power optimization criterion applies when the exothermic temperature is lower. When the exothermic temperature is lower High, ecological optimization guidelines more reasonable.