AA-CAES中蓄热系统模型改进与分析  

MODEL MODIFICATION AND ANALYSIS OF HEAT STORAGE SYSTEM IN AA-CAES

作　　者：韩中合[1] 庞永超[1] Han Zhonghe;Pang Yongchao(Key Lab of Condition Monitoring and Control for Power Plant Equipment （North China Electric Power University）, Ministry of Education, Banding 071003, China)

机构地区：[1]华北电力大学电站设备状态监测与控制教育部重点实验室

出　　处：《太阳能学报》2018年第6期1566-1573,共8页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51076044)

摘　　要：为了更精确地研究蓄热系统对AA-CAES的影响,对传统蓄热系统热力学模型进行改进,并以3种蓄热介质为例,分析蓄热介质对换热器效能的影响。考虑蓄热介质热物性的限制,研究不同蓄热介质构成的储能系统在储能效率、储能密度等方面的特点。结果表明：换热器效能在储能和释能阶段存在差异,改进蓄热系统模型后储能效率降低1.04%;当换热器结构和空气流量均相同时,以水为蓄热介质的换热器效能最高;蓄热介质的热物性会影响储气室最高压力,导致系统在储能效率、储热效率、储能密度、蓄热系统运行压力等方面存在差异。In order to study the effect of heat storage system on AA-CAES more accurately,the traditionalthermodynamic model of the heat storage system has been modified,and the effect of heat storage medium on efficiencyof heat exchanger has been analyzed based on three kinds of heat storage mediums. Considering the limitation of thethermal properties of heat storage medium,the characteristics of energy storage system consisting of different heat storagemediums are studied in terms of energy storage efficiency and energy storage density. The results show that theefficiencies of heat exchanger are different in energy storage stage and energy release stage,and the efficiency of energystorage is reduced by 1.04% after modifying the model of the heat storage system. The efficiency of heat exchanger usingwater as the heat storage medium is the highest when the structure and air flow rate of heat exchanger are same. Themaximum pressure of the gas storage chamber is affected by the thermal properties of the heat storage medium,causesexisting differences of system in energy storage efficiency,heat storage efficiency,energy storage density,operatingpressure of the heat storage system,etc.

关 键 词：压缩空气储能 蓄热系统 模型改进 蓄热介质 

分 类 号：TK82[动力工程及工程热物理—流体机械及工程]