太阳能热发电站中固体储热模块的优化设计  

DESIGN OPTIMIZATION OF SOLID HEAT STORAGE MODULE FOR SOLAR THERMAL POWER PLANT

作　　者：菅泳仿[1] 白凤武[1] 王志峰[1] 王艳[1] 

机构地区：[1]中国科学院太阳能热利用及光伏系统重点实验室,中国科学院电工研究所,北京100190

出　　处：《太阳能学报》2017年第2期438-443,共6页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(E060701);国家科技支撑计划(2014BAA01B01)

摘　　要：以修正集总热容方法建立固体储热单元的1D非稳态模型,并利用模型的解析解推导发电量与传热流体温度的关系式;提出以流体出口温度和发电量为约束条件及单位发电成本为目标函数的优化设计方法。该文以混凝土和铸铁2种固体储热材料为例对储热模块进行优化设计,并对比分析上述2种储热材料的储热成本。Solid sensible heat storage is an attractive option for high-temperature heat storage application in terms of investment and maintenance costs. The modified lumped heat capacity method was used to set up 1D transient model of solid heat storage unit. The analytical solution of the model was used to derive the relational expression between the generating electricity quantity and the temperature of heat transferring fluid. An optimization design method was developed using generating electricity quantity and outlet fluid temperature as the constraint conditions and the cost of unit generating electricity quantity as the objective function. The optimization design for heat storage module was carried out using both concrete and cast iron as the examples of solid heat storage material, and the heat storage cost of two heat storage materials were analyzed and compared.

关 键 词：太阳能热发电 固体储热 优化设计 混凝土 修正集总热容法 

分 类 号：TK513.5[动力工程及工程热物理—热能工程]