空间核动力装置斯特林转换系统的热力学性能优化分析  

Optimizing Analysis of Thermodynamic Performance Optimizing Analysis of Stirling Conversion System for Space Nuclear Power Installation

作　　者：张昊春[1] 冯致远[1] 蔡书宜 吉宇[1] 张亦宁[1] 赵广播[1] 

机构地区：[1]哈尔滨工业大学能源科学与工程学院,哈尔滨150001

出　　处：《核动力工程》2016年第3期146-151,共6页Nuclear Power Engineering

基　　金：国家自然科学基金委创新研究群体(51421063);国家自然科学基金(51536001)

摘　　要：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。Advanced Stirling convertor designed by Sunpower was investigated as the object of the study, and a theoretical model of a Stirling cycle was established. Based on the operation condition of the nuclear power plant in the space, the theory of finite time thermodynamics was adopted to investigate the system performance, considering the effect of variable heat absorption temperature on the cycle. Moreover, applicability of the system optimization based on the entropy theory and the entransy theory was discussed. In addition, results between the ecological optimization criterion and the output power optimization criteria were compared. It was found that cycle efficiency and output power could be effectively improved through increasing the cycle endothermic temperature. In addition, the output power could be optimized by using entropy production rate and entransy loss rate. The output power optimization criterion can be applicable at lower exothermic temperature condition, while the ecological optimization criterion is more reasonable at higher exothermic temperature condition.

关 键 词：空间核动力装置 先进斯特林转换器 系统优化 有限时间热力学 

分 类 号：TL331[核科学技术—核技术及应用]