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Study on Isochoric Specific Heat Capacity of Liquid R-410A and HFE-347pcf2

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Abstract

The isochoric heat capacity (c v ) of R-410A [a mixture of 49.81 mass% difluoromethane (HFC-32) + 50.19 mass% pentafluoroethane (HFC-125)] and 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethylether (HFE-347pcf2) was measured at temperatures from 277 K to 400 K and at pressures up to 30 MPa. The reported density measurements for R-410A and HFE-347pcf2 are in the single-phase region and cover a density range above 0.92 g·cm−3 and 1.33 g·cm−3, respectively. The measured data of R-410A are compared with data reported by other researchers. Also, the measured data of R-410A are examined with an available equation of state. As a result, it is found that the present c v data for R-410A agree well with those by other researchers and the calculated values with the equation of state in the measurement range except near the critical isochore.

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Authors and Affiliations

  1. Department of Mechanical Systems Engineering, National Defense Academy, Yokosuka, 239-8686, Japan

    A. Matsuguchi & N. Kagawa

  2. Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoka, 816-8580, Japan

    S. Koyama

Authors
  1. A. Matsuguchi
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  2. N. Kagawa
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  3. S. Koyama
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Correspondence to A. Matsuguchi.

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Matsuguchi, A., Kagawa, N. & Koyama, S. Study on Isochoric Specific Heat Capacity of Liquid R-410A and HFE-347pcf2. Int J Thermophys 31, 727–739 (2010). https://doi.org/10.1007/s10765-010-0766-0

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  • DOI: https://doi.org/10.1007/s10765-010-0766-0

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