压缩空气储能系统单耗分析模型及其应用  

Analysis Model for Fuel Specific Consumption of Compressed Air Energy Storage and Its Application

作　　者：何青[1] 刘辉[1] 张军良[1] 蔡悠然 刘文毅[1] 

机构地区：[1]华北电力大学能源动力与机械工程学院,北京102206

出　　处：《华北电力大学学报（自然科学版）》2015年第5期74-79,共6页Journal of North China Electric Power University：Natural Science Edition

基　　金：国家自然科学基金资助项目(51276059);中央高校基本科研业务专项资金资助项目(2014XS27)

摘　　要：根据单耗分析理论,将压缩空气储能系统储能过程中产生的高压空气以及释能过程中产生的电能视为产品,分析储能系统运行过程中的不可逆热力学过程的效率和损失及其附加燃料单耗,建立了一套完整的压缩空气储能系统单耗分析模型;并针对基于美国Mc Intosh电站改进的压缩空气储能系统及其热力参数,在热力计算的基础上,进行了压缩空气储能单耗分析。结果表明:在整个储能阶段压缩过程损失最大,效率最低,其附加单耗最高;在释能阶段虽然回热过程的效率最低,但是其附加单耗最低,燃烧过程和膨胀过程的效率较高但是其单耗也较高;从理论上证明了回热器是提高压缩空气储能系统效率的重要因素。Based on the theory of fuel specific consumption analysis,which takes the compressed air and electricity produced in the energy-storing and energy-releasing processes as products respectively,a complete fuel specific consumption analysis model has been set up by following the exergy efficiency and exergy destruction of the irreversible thermodynamic processes and their additional unit consumption of fuel.The model,on the basis of thermal calculation,has been applied to the fuel specific consumption analysis for a developed compressed air energy storage system of the American McIntosh Power Station.The results show that in the energy storage process,the exergy destruction of compressed process is the largest;its exergy efficiency is accordingly the lowest;and the additional specific consumption of fuel is the highest.In the expansion and combustion processes,both the exergy efficiency and the fuel specific consumption are the highest;the exergy efficiency of regenerator is the lowest;and its additional specific consumption of fuel is also the lowest.All these theoretically prove that the renegerator is the key factor to increase the compressed air energy storage efficiency.

关 键 词：单耗分析 (火用)效率 (火用)损失 压缩空气储能 

分 类 号：TK02[动力工程及工程热物理]