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Vapor-Liquid Equilibria of HFC-32/n-Butane Mixtures

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Abstract

The vapor-liquid equilibria of HFC-32 and n-butane mixtures were measured in a temperature range of 283.15 to 313.15 K using a circulation method. The experimental standard uncertainties of temperature, pressure, and composition measurements were estimated to be within 10 mK, 2 kPa, and 0.2% in mole fraction, respectively. The measured data were correlated with the Peng–Robinson (PR) equation of state using Wong and Sandler mixing rules. The relative deviations of the measured bubble-point pressure from the calculated bubble-point pressure as a function of the measured bubble-point pressure were found to be less than 2.5%.

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Authors and Affiliations

  1. Fluid Properties Section, Material Properties and Metrological Statistics Division, National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, 1-1-1 Umezono, Tsukuba, Ibaraki, 305-8563, Japan

    S. Shimawaki & K. Fujii

  2. Department of Energy and Environmental Science, Graduate School of Engineering, Utsunomiya University, 7-1-2 Yoto, Utsunomiya, Tochigi, 321-8585, Japan

    S. Shimawaki

Authors
  1. S. Shimawaki
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  2. K. Fujii
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Correspondence to K. Fujii.

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Shimawaki, S., Fujii, K. Vapor-Liquid Equilibria of HFC-32/n-Butane Mixtures. International Journal of Thermophysics 24, 1033–1042 (2003). https://doi.org/10.1023/A:1025052901472

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  • DOI: https://doi.org/10.1023/A:1025052901472

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