摘要
实际的塔式太阳能热动力系统中,塔接收器的对流与辐射损失以及系统各换热器的传热热阻等不可逆过程总是存在的,在考虑这些因素条件下,建立塔式太阳能热动力系统的理论模型。以单位投资成本的产功量最大值为目标函数,分析系统的投资构成对系统经济性的影响。分析接收器工作温度、聚光比、内可逆热机的效率以及聚光器成本比例等参数对系统经济参数的影响,给出系统最经济工作条件。结果表明,合理选择接收器工作温度和内可逆热机效率都可让目标函数取最大值。在给定接收器表面温度和内可逆热机效率的情况下,聚光比和聚光器成本比例增加有利于提高系统的经济性。
A theoretical model of the solar tower power system was described to analyze the system economic effectiveness by taking the power-to-cost ratio as the objective function, evaluating the influence of cost ratio, receiver temperature, concentration ratio, endoreversible heat engine efficiency and solar concentrator et al. on the system economic parameters; and finally giving the optimum thermoeconomic working condition. The results showed that rational choice of receiver temperature and endoreversible heat engine efficiency can make the objective function maximum. For a given receiver surface temperature and endoreversible heat engine efficiency, increasing cost proportion of concentration ratio and concentrator is beneficial to the system economic performance.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2014年第4期641-648,共8页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(U1261119)
关键词
热经济优化
塔式太阳能电站
内可逆热机
聚光比
thermoeconomic optimization
solar tower power plant
endoreversible engine
concentration ratio
