摘要
为了研究工质和运行方式对压气储能系统的影响,针对2种工质和不同运行方式,提出4种组合工作方案,以热力学第二定律为基础,采用仿真计算的方法,比较系统在4种组合工作方案下的性能差异,并开展关键参数敏感性分析。结果表明:在给定的系统基本运行参数下,采用CO2和滑压方式时效率最高,流密度也最大;对于4种组合工作方案,储气室的损均最大,是系统改进的首要对象;工质初温对效率和流密度的影响相反;4种组合工作方案的2种指标随对流换热系数增加均存在最小值;储能功率的影响与工质初温相反。
To investigate the influence of working medium and operation mode on compressed gas energy storage system,four operation scenarios are proposed based on air and carbon dioxide,and constant pressure and sliding pressure operation modes.On the basis of the second law of thermodynamics,system performance differences of four scenarios are compared with each other,and sensitivity analyses of key parameters are conducted by simulation calculation.The results show that under the same operation parameters,exergy efficiency is the highest and exergy density is simultaneously the largest when carbon dioxide and sliding pressure mode are employed.For four scenarios,gas storage chamber has the largest exergy destruction and is the primary improvement object.The effects of initial temperature of working medium on exergy efficiency and exergy density are different.Two performance indexes of four scenarios all exist the minimum with convective heat transfer coefficient.The influences of charge power are opposite to initial temperature of working medium.
作者
韩中合
郭森闯
Han Zhonghe;Guo Senchuang(Key Lab of Condition Monitoring and Control for Power Plant Equipmen(tNorth China Electric Power University),Ministry of Education,Baoding 071003,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2020年第11期11-16,共6页
Acta Energiae Solaris Sinica
基金
河北省自然科学基金(E2018502059)。
关键词
热力学过程
仿真计算
二氧化碳
压气储能系统
性能差异
thermodynamic process
simulation calculation
carbon dioxide
compressed gas energy storage system
performance difference
