摘要
本文基于德国Huntorf压缩空气储能(CAES)工厂的运行参数,利用Aspen Plus软件建模对CAES系统参数进行热力学分析。从研究结果知,降低级间冷却温度可以减少压缩机组电耗,降低储气室温度可以增加储气量,提高周期内发电量。通过高压透平机进口压力的梯级利用可以提高系统的循环效率RTE,提高低压透平机入口温度可以提高压缩空气的焓值及发电能力。通过回收低压透平机排气余热预热高压透平机压缩空气入口温度可以提高储能系统RTE,与Huntorf工厂的运行数据相比,最多可节约燃料40%。
In this study,the thermodynamic characteristics of the compressed air energy storage system (CAES)are investigated based on the operation parameters of the Huntorf CAES plant with Aspen Plus.We can get know from the simulation results that power consumption of the compressor train can be reduced with lower cooling temperature between the compressors.More power is generated with the same CAES with lower temperature of the compressed air storage cavern because of more enthalpy of compressed air are storage in the cavern with low temperature.Round trip efficiency (RTE)of the system can be improved with gradient utilization of the entrance pressure of the high pressure (HP)turbine.The enthalpy of the compressed air is raised with high HP turbine entrance temperature.More power is generated with the compressed air with much more enthalpy. The RTE of the system can be improved obviously by means of recovering the waste heat from the exhaust air from the low pressure (LP)turbine to preheat the compressed air before entering the HP turbine for generating power.More than 30% of the fuel can be saved with the Huntorf plant with the same capacity if the waste heat is recovered effectively.
作者
张建军
周盛妮
李帅旗
宋文吉
冯自平
ZHANG Jian-Jun;ZHOU Shen-Gni;LI Shuai-Qi;SONG Wen-Ji;FENG Zi-Ping(Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,Guangzhou 510640,China;University of Chinese Academy of Sciences,Beijing 100049,China;CAS Key Laboratory of Renewable Energy,Guangzhou 510640,China;Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development,Guangzhou 510640,China)
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2019年第1期118-124,共7页
Journal of Engineering Thermophysics
基金
国家重点研发计划资助(No.2017YFB0903605)
广东省科技计划项目(No.2013B091300018
No.2014B0505014)
