摘要
针对传统CAES(压缩空气储能)系统存在依赖化石燃料、滑压运行的AA-CAES(绝热压缩空气储能)系统变工况范围大和效率低等问题,全面分析了定压运行的AACAES系统的热力性能,建立AA-CAES系统各单元模块和系统的热力学模型,利用MATLAB软件进行数值模拟,揭示了换热器效能、压缩机总压比、级数和压比分配对系统效率的影响特性。分析得出当换热器效能等于0.7、0.8和0.9时,系统效率随总压比和级数变化具有不同的趋势;当总压比一定时,系统效率随换热器效能和级数变化趋势也不同;当换热器效能、总压比、级数一定时,压比分配对系统效率基本没有影响;系统各参数间存在效率最佳的匹配关系。
In the light of such problems as the dependence of the traditional CAES( compressed air energy storage) systems on fossil fuels and a large off-design operation range and a low efficiency of the AA-CAES( advanced adiabatic compressed air energy storage) systems when they are operating at sliding pressures,analyzed in a comprehensive way was the thermal performance of an AA-CAES system operating at a constant pressure and established were each unit modules of and a thermodynamic model for the system. By making use of the software MATLAB,a numerical simulation was performed with the characteristics governing the influence of the efficiency of the heat exchangers,total pressure ratio,number of stages and pressure ratio distribution of the compressor on the efficiency of the system being revealed. The authors have arrived at a conclusion from an analysis that when the efficiency of the heat exchangers equals to 0. 7,0. 8 and 0. 9 respectively,the efficiency of the system assumes a different variation tendency with the total pressure and number of stages. When the total pressure ratio is constant,the efficiency of the system exhibits a different variation tendency with the efficiency of the heat exchangers and number of stages. When the efficiency of the heat exchangers,total pressure ratio and number of stages are constant,the pressure ratio distribution basically has no influence on the efficiency of the system and there exists on optimum efficiency matching relationship among various parameters of the system.
出处
《热能动力工程》
CAS
CSCD
北大核心
2013年第5期540-546,558,共7页
Journal of Engineering for Thermal Energy and Power
基金
国家高技术研究发展计划(863计划)项目(2013AA050801)
北京市自然科学基金项目(3122033)
关键词
压缩空气储能
绝热压缩空气储能
系统建模
定压运行
效率分析
compressed air energy storage,adiabatic compressed air energy storage,system modeling,constant pressure operation,efficiency analysis
作者简介
作者简介：郭欢（1988－），男，陕西渭南人，现就读于中国科学院大学硕士研究生．
