超临界H_(2)O/CO_(2)混合工质的物性计算  

Calculation of Thermodynamic Properties of Supercritical H_(2)O/CO_(2) Mixed Substance Turbine

作　　者：徐阳 徐宝鹏[1] XU Yang;XU Bao-peng(School of Energy and Power Engineering,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]大连理工大学能源与动力学院,大连116024

出　　处：《汽轮机技术》2021年第5期325-329,共5页Turbine Technology

基　　金：国家重点研究发展计划项目(2016YFB0600104)。

摘　　要：准确计算H_(2)O/CO_(2)混合工质的热力特性是新型混合工质汽轮机设计及变工况计算的前提。介绍了EOS-CG模型的数学模型及热力特性的计算方法,并利用该模型、PR、GERG-2008模型对混合工质的物性进行了对比分析。对比分析结果表明,EOS-CG、GERG-2008模型对H_(2)O/CO_(2)混合工质的物性计算具有较高精度,可以满足混合工质汽轮机热力计算精度要求。Accurate calculation of the thermodynamic properties of H_(2)O/CO_(2) mixture in a mixed substance turbine is a prerequisite condition for the design and varied condition thermal calculation.The EOS-CG model and its computational method of thermodynamic properties are introduced in this paper.The comparison among EOS-CS,PR and GERG-2008 models are conducted and the results show that the models of EOS-CG and GERG-2008 deliver acceptable accuracies for the thermal calculation of mixed substance turbine.

关 键 词：汽轮机 H_(2)O/CO_(2)混合工质 EOS-CG模型 热力特性 

分 类 号：TK262[动力工程及工程热物理—动力机械及工程]