不同状态方程对于氢热物性预测的对比研究  

A comparative study of different equations of state for prediction of hydrogen thermal properties

作　　者：吴奇 杨少柒[1,2] 谢秀娟 李正宇[1,2] 龚领会 Wu Qi;Yang Shaoqi;Xie Xiujuan;Li Zhengyu;Gong Linghui(Chinese Academy of Sciences Key Laboratory of Cryogenics,Technical Institute of Physics and Chemistry,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China;State Key Laboratory of Technologies in Space Cryogenics Propellants,Beijing 100190,China)

机构地区：[1]中国科学院低温工程学重点实验室(理化技术研究所),北京100190 [2]中国科学院大学,北京100049 [3]航天低温推进剂技术国家重点实验室,北京100190

出　　处：《低温工程》2024年第3期8-13,共6页Cryogenics

基　　金：国家重点研发计划(项目号:2022YFB4002801);广东省重点研发计划(项目号:2021B0101240001)资助。

摘　　要：从状态方程的角度出发,针对不同状态方程在低温高压范围内对于氢热力学性质的预测展开研究,利用目前使用较多的立方型以及多参数状态方程对于氢的PVT数据、等容热容、等压热容、焓、熵等热力学性质进行计算。将计算结果与NIST数据库给出的标准值进行比较,并对方程参数进行修正,进一步探讨了各个压力段不同状态方程的优劣以及误差产生的原因,为之后状态方程的使用、改进以及液氢相关设备的设计提出了建议。From the perspective of the equation of state,the thermodynamic properties of hy-drogen are predicted by different equations of state in low temperature and high pressure ranges.The thermodynamic properties of hydrogen such as PVT data,isovolumetric heat capacity,isobar-ic heat capacity,enthalpy and entropy are calculated by using the cubic and multiparameter equa-tions of state,which are more commonly used nowadays.The results are compared with the stand-ard values given by the NIST database,and the parameters of the equations are corrected to fur-ther explore the advantages and disadvantages of different equations of state for different pressure ranges as well as the reasons for the errors,so that some suggestions are made for the use and im-provement of the equations of state in the future and for the design of the liquid hydrogen related equipment.

关 键 词：液氢 状态方程 热力性质 饱和 超临界 

分 类 号：TK91[动力工程及工程热物理]