Determination of the second virial coefficient for working fluid using a cylindrical resonator

doi:10.3969/j.issn.0438-1157.2013.08.001

CIESC Journal ›› 2013, Vol. 64 ›› Issue (8): 2711-2717.DOI: 10.3969/j.issn.0438-1157.2013.08.001

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Determination of the second virial coefficient for working fluid using a cylindrical resonator

LIU Qiang¹, FENG Xiaojuan², DUAN Yuanyuan¹

1. Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Beijing Key Laboratory for CO₂ Utilization and Reduction Technology, Tsinghua University, Beijing 100084, China;
2. Heat Division, National Institute of Metrology, Beijing 100013, China

Received:2012-12-19 Revised:2013-01-10 Online:2013-08-05 Published:2013-08-05
Supported by:
supported by the National Natural Science Foundation of China(51076074,51106143).

圆柱定程干涉法确定工质的第二维里系数

刘强¹, 冯晓娟², 段远源¹

1. 清华大学热科学与动力工程教育部重点实验室, 二氧化碳资源化利用与减排技术北京市重点实验室, 北京 100084;
2. 中国计量科学研究院热工所, 北京 100013

通讯作者: 段远源
作者简介:刘强(1981- ),男,博士研究生。
基金资助:
国家自然科学基金项目(51076074,51106143)。

Abstract

Abstract: The acoustic resonance frequencies were measured for argon from 270 to 333.15 K and pressures up to 1000 kPa using a cylindrical resonator.The perturbations in frequency measurements from thermal and viscous boundary layers,the fill duct and shell motions were corrected.The second acoustic virial coefficients were obtained by fitting the measured acoustic data.The results agree well with the experimental results by using spherical resonators.The second virial coefficients were determined by fitting the second acoustic virial coefficient and the square-well intermolecular model.The deviation of this work from the calculated value using the equation of state developed by Tegeler et al.is lower than 0.4 cm³·mol^-1.The results show that the second virial coefficient can be determined using cylindrical resonators with low uncertainties.

Key words: second virial coefficient, cylindrical resonator, gaseous speed of sound, argon

摘要： 通过圆柱定程干涉法测量了Ar在270~333.15 K,压力至1000 kPa的声学共振频率,修正了热边界层、黏性边界层、声波导管、壳体振动等非理想因素对共振频率测量的影响。通过拟合声学共振频率获得了Ar的第二声速维里系数,实验结果与文献中圆球定程干涉法的测量结果具有较好的一致性。通过第二声速维里系数回归了方阱势能模型的参数,根据回归结果计算了Ar的第二维里系数,在150~450 K范围与标准状态方程的计算偏差小于0.4 cm³·mol^-1。通过圆柱定程干涉法确定的第二维里系数与圆球定程干涉法的精度相当。

关键词: 第二维里系数, 圆柱定程干涉法, 气相声速, Ar

CLC Number:

TK123

LIU Qiang, FENG Xiaojuan, DUAN Yuanyuan. Determination of the second virial coefficient for working fluid using a cylindrical resonator[J]. CIESC Journal, 2013, 64(8): 2711-2717.

刘强, 冯晓娟, 段远源. 圆柱定程干涉法确定工质的第二维里系数[J]. 化工学报, 2013, 64(8): 2711-2717.

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Determination of the second virial coefficient for working fluid using a cylindrical resonator

圆柱定程干涉法确定工质的第二维里系数

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