Thermal conductivity of mixtures of HFC-32 and HFC-125 in the liquid phase

Xianfeng Gao; Kazuyoshi Nomura; Yuji Nagasaka; Akira Nagashima

doi:10.1068/htec201

Thermal conductivity of mixtures of HFC-32 and HFC-125 in the liquid phase

Xianfeng Gao, Kazuyoshi Nomura, Yuji Nagasaka, Akira Nagashima

Department of System Design Engineering

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

The mixtures of HFC-32 (difluoromethane, CH₂F₂) and HFC-125 (pentafluoroethane, CHF₂-CF₃) are supposed to be the most promising alternatives to the refrigerant HCFC-22 in refrigeration, heat pump, and air-conditioning systems. Transport properties of the refrigerant are indispensable in the optimisation of the heat transfer coefficient when designing evaporators and condensers. The thermal conductivity of the mixtures of HFC-32 and HFC-125 in the liquid phase in the temperature range 213-293 K and in the pressure range 2-30 MPa with HFC-32 mass fractions of 0.249, 0.500, and 0.750, respectively, have been measured.

Original language	English
Pages (from-to)	39-44
Number of pages	6
Journal	High Temperatures - High Pressures
Volume	29
Issue number	1
DOIs	https://doi.org/10.1068/htec201
Publication status	Published - 1997 Jan 1

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Physical and Theoretical Chemistry

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abstract = "The mixtures of HFC-32 (difluoromethane, CH2F2) and HFC-125 (pentafluoroethane, CHF2-CF3) are supposed to be the most promising alternatives to the refrigerant HCFC-22 in refrigeration, heat pump, and air-conditioning systems. Transport properties of the refrigerant are indispensable in the optimisation of the heat transfer coefficient when designing evaporators and condensers. The thermal conductivity of the mixtures of HFC-32 and HFC-125 in the liquid phase in the temperature range 213-293 K and in the pressure range 2-30 MPa with HFC-32 mass fractions of 0.249, 0.500, and 0.750, respectively, have been measured.",

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AU - Gao, Xianfeng

AU - Nomura, Kazuyoshi

AU - Nagasaka, Yuji

AU - Nagashima, Akira

PY - 1997/1/1

Y1 - 1997/1/1

N2 - The mixtures of HFC-32 (difluoromethane, CH2F2) and HFC-125 (pentafluoroethane, CHF2-CF3) are supposed to be the most promising alternatives to the refrigerant HCFC-22 in refrigeration, heat pump, and air-conditioning systems. Transport properties of the refrigerant are indispensable in the optimisation of the heat transfer coefficient when designing evaporators and condensers. The thermal conductivity of the mixtures of HFC-32 and HFC-125 in the liquid phase in the temperature range 213-293 K and in the pressure range 2-30 MPa with HFC-32 mass fractions of 0.249, 0.500, and 0.750, respectively, have been measured.

AB - The mixtures of HFC-32 (difluoromethane, CH2F2) and HFC-125 (pentafluoroethane, CHF2-CF3) are supposed to be the most promising alternatives to the refrigerant HCFC-22 in refrigeration, heat pump, and air-conditioning systems. Transport properties of the refrigerant are indispensable in the optimisation of the heat transfer coefficient when designing evaporators and condensers. The thermal conductivity of the mixtures of HFC-32 and HFC-125 in the liquid phase in the temperature range 213-293 K and in the pressure range 2-30 MPa with HFC-32 mass fractions of 0.249, 0.500, and 0.750, respectively, have been measured.

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Thermal conductivity of mixtures of HFC-32 and HFC-125 in the liquid phase

Abstract

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