University Chemistry ›› 2022, Vol. 37 ›› Issue (7): 2109096.doi: 10.3866/PKU.DXHX202109096

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Joule-Thomson Coefficient of van der Waals Gas Based on p, Vm and 3D μJ-T-p-T Profile

Xiangming Feng(), Jinyun Zheng, Weihua Chen, Xinxin Guan, Jianmin Zhang   

  • Received:2021-09-28 Accepted:2021-10-26 Published:2021-11-19
  • Contact: Xiangming Feng E-mail:fengxm@zzu.edu.cn

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Abstract:

The effect of state parameters on Throttling Expansion is less investigated in the current tutorials of physical chemistry. Therefore, Joule-Thomson coefficient containing p, Vm was rudimentarily discussed based on van der Waals gas. Taking Nitrogen gas as an example, 3D μJ-T-p-T profile and 2D contour map were further plotted by converting independent variables p, Vm into p, T by means of van der Waals equation to reflect the dependence of μJ-T on p, T more intuitively.

Key words: Throttling expansion, Joule-Thomson coefficient, van der Waals gas