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Title: Thermal conductivity of ternary refrigerant mixtures of HFC-32/125/134a in the liquid phase

Abstract

The liquid thermal conductivity of two ternary mixtures of HFC-32/125/134a (23.0/25.0/52.0 and 19.0/43.8/37.2 wt%) was measured using a transient hotwire instrument in the temperature ranges from 193 to 293 K and from 213 to 293, respectively, and in the pressure range from 2 to 30 MPa. The thermal conductivity has an estimated uncertainty of {+-}7.0%. For engineering purposes, the thermal conductivity data were correlated using a polynomial in temperature and pressure for each mixture with a standard deviation of 0.6%.

Authors:
; ;
Publication Date:
Research Org.:
Keio Univ., Yokohama (JP)
OSTI Identifier:
20020842
Resource Type:
Journal Article
Journal Name:
International Journal of Thermophysics
Additional Journal Information:
Journal Volume: 20; Journal Issue: 5; Other Information: PBD: Sep 1999; Journal ID: ISSN 0195-928X
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; REFRIGERANTS; MATERIAL SUBSTITUTION; MIXTURES; FLUORINATED ALIPHATIC HYDROCARBONS; THERMAL CONDUCTIVITY; TEMPERATURE RANGE 0065-0273 K; TEMPERATURE RANGE 0273-0400 K; DATA COVARIANCES

Citation Formats

Gao, X., Nagasaka, Y., and Nagashima, A. Thermal conductivity of ternary refrigerant mixtures of HFC-32/125/134a in the liquid phase. United States: N. p., 1999. Web. doi:10.1023/A:1021484904269.
Gao, X., Nagasaka, Y., & Nagashima, A. Thermal conductivity of ternary refrigerant mixtures of HFC-32/125/134a in the liquid phase. United States. doi:10.1023/A:1021484904269.
Gao, X., Nagasaka, Y., and Nagashima, A. Wed . "Thermal conductivity of ternary refrigerant mixtures of HFC-32/125/134a in the liquid phase". United States. doi:10.1023/A:1021484904269.
@article{osti_20020842,
title = {Thermal conductivity of ternary refrigerant mixtures of HFC-32/125/134a in the liquid phase},
author = {Gao, X. and Nagasaka, Y. and Nagashima, A.},
abstractNote = {The liquid thermal conductivity of two ternary mixtures of HFC-32/125/134a (23.0/25.0/52.0 and 19.0/43.8/37.2 wt%) was measured using a transient hotwire instrument in the temperature ranges from 193 to 293 K and from 213 to 293, respectively, and in the pressure range from 2 to 30 MPa. The thermal conductivity has an estimated uncertainty of {+-}7.0%. For engineering purposes, the thermal conductivity data were correlated using a polynomial in temperature and pressure for each mixture with a standard deviation of 0.6%.},
doi = {10.1023/A:1021484904269},
journal = {International Journal of Thermophysics},
issn = {0195-928X},
number = 5,
volume = 20,
place = {United States},
year = {1999},
month = {9}
}