摘要
本文针对蓄热式压缩空气储能系统建立数学模型,利用MATLAB调用REFPROP软件获取不同状态下空气物性参数,进行总体计算程序开发,在储能系统输出功率为100 MW、膨胀机进口前压力及膨胀级数被固定的前提下,分析了压缩机不同总压比和级数对系统性能的影响。结果表明:对于固定压缩机级数,随着总压比的增加,储能系统效率降低,系统热能利用率降低,节流损失增加,系统热力学性能下降,而储释能工质质量流量降低,储气密度增加,体积减小;对于固定压缩机总压比,随着级数增加,储能系统效率降低,系统热能利用率降低,节流损失基本保持不变。
In this paper,the mathematical model of regenerative compressed air energy storage system was established and the system performance calculation program was developed by using the software of MATLAB and REFPROP. With constant rated output power of 100 MW,expander inlet pressure and stages,the impact of different total pressure ratios and stages of compressor on system performance was also analyzed. The results showed that with constant compressor stage,the increase in the total pressure ratio leads to the decrease in the efficiency and heat energy utilization of energy storage system,and the throttling loss increases. Thus the thermodynamic performance of the system becomes worse. But the decrease in mass flow can reduce the gas volume in storing. With constant total pressure ratio of the compressor,the increase in compressor stage results in the reduction in the efficiency and heat energy utilization of energy storage system,but the throttling loss essentially remains unchanged.
出处
《热能动力工程》
CAS
CSCD
北大核心
2017年第3期40-46,共7页
Journal of Engineering for Thermal Energy and Power
基金
国家自然科学基金资助项目(51206159)
内蒙古自治区自然科学基金资助项目(2014MS0504)
关键词
CAES
总压比
系统效率
热能利用率
节流损失
CAES
total pressure
system efficiency
heat energy utilization
throttling loss
