Equation of state for hydrofluorocarbon refrigerant mixtures of HFC-125/143a, HFC-125/134a, HFC-134a/143a and HFC-125/134a/143a

J. Li; R. Tillner-Roth; H. Sato; K. Watanabe

doi:10.1016/S0378-3812(99)00187-9

Equation of state for hydrofluorocarbon refrigerant mixtures of HFC-125/143a, HFC-125/134a, HFC-134a/143a and HFC-125/134a/143a

J. Li, R. Tillner-Roth, H. Sato, K. Watanabe

Department of System Design Engineering

Research output: Contribution to journal › Conference article › peer-review

9 Citations (Scopus)

Abstract

Equations of state (EOSs) in the form of dimensionless Helmholtz free energy have been developed for the binary hydrofluorocarbon (HFC) refrigerant mixtures HFC-125/143a, HFC-125/134a, HFC-134a/143a and for the ternary refrigerant mixture HFC-125/134a/143a in the present work. These EOSs are effective in the temperature and pressure ranges where the experimental measurements covered, i.e., 200 K ≤ T ≤ 413 K, P ≤ 35 MPa for HFC-125/143a and HFC-125/134a; 243 K ≤ T ≤ 413 K, P ≤ 17 MPa for HFC-134a/143a and HFC-125/134a/143a. Experimental measurements in both single-phase and two-phase regions are represented by the present EOSs within their estimated uncertainties.

Original language	English
Pages (from-to)	225-239
Number of pages	15
Journal	Fluid Phase Equilibria
Volume	161
Issue number	2
DOIs	https://doi.org/10.1016/S0378-3812(99)00187-9
Publication status	Published - 1999 Jul 24
Event	Proceedings of the 1998 5th Asian Thermophysical Properties Conference - Seoul, S Kor Duration: 1998 Aug 3 → 1998 Sep 2

Keywords

Equation of state
HFC-125
HFC-134a
HFC-143a
Helmholtz free energy
Hydrofluorocarbon
Mixture

ASJC Scopus subject areas

Chemical Engineering(all)
Physics and Astronomy(all)
Physical and Theoretical Chemistry

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10.1016/S0378-3812(99)00187-9

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title = "Equation of state for hydrofluorocarbon refrigerant mixtures of HFC-125/143a, HFC-125/134a, HFC-134a/143a and HFC-125/134a/143a",

abstract = "Equations of state (EOSs) in the form of dimensionless Helmholtz free energy have been developed for the binary hydrofluorocarbon (HFC) refrigerant mixtures HFC-125/143a, HFC-125/134a, HFC-134a/143a and for the ternary refrigerant mixture HFC-125/134a/143a in the present work. These EOSs are effective in the temperature and pressure ranges where the experimental measurements covered, i.e., 200 K ≤ T ≤ 413 K, P ≤ 35 MPa for HFC-125/143a and HFC-125/134a; 243 K ≤ T ≤ 413 K, P ≤ 17 MPa for HFC-134a/143a and HFC-125/134a/143a. Experimental measurements in both single-phase and two-phase regions are represented by the present EOSs within their estimated uncertainties.",

keywords = "Equation of state, HFC-125, HFC-134a, HFC-143a, Helmholtz free energy, Hydrofluorocarbon, Mixture",

author = "J. Li and R. Tillner-Roth and H. Sato and K. Watanabe",

year = "1999",

month = jul,

day = "24",

doi = "10.1016/S0378-3812(99)00187-9",

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pages = "225--239",

journal = "Fluid Phase Equilibria",

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note = "Proceedings of the 1998 5th Asian Thermophysical Properties Conference ; Conference date: 03-08-1998 Through 02-09-1998",

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TY - JOUR

T1 - Equation of state for hydrofluorocarbon refrigerant mixtures of HFC-125/143a, HFC-125/134a, HFC-134a/143a and HFC-125/134a/143a

AU - Li, J.

AU - Tillner-Roth, R.

AU - Sato, H.

AU - Watanabe, K.

PY - 1999/7/24

Y1 - 1999/7/24

N2 - Equations of state (EOSs) in the form of dimensionless Helmholtz free energy have been developed for the binary hydrofluorocarbon (HFC) refrigerant mixtures HFC-125/143a, HFC-125/134a, HFC-134a/143a and for the ternary refrigerant mixture HFC-125/134a/143a in the present work. These EOSs are effective in the temperature and pressure ranges where the experimental measurements covered, i.e., 200 K ≤ T ≤ 413 K, P ≤ 35 MPa for HFC-125/143a and HFC-125/134a; 243 K ≤ T ≤ 413 K, P ≤ 17 MPa for HFC-134a/143a and HFC-125/134a/143a. Experimental measurements in both single-phase and two-phase regions are represented by the present EOSs within their estimated uncertainties.

AB - Equations of state (EOSs) in the form of dimensionless Helmholtz free energy have been developed for the binary hydrofluorocarbon (HFC) refrigerant mixtures HFC-125/143a, HFC-125/134a, HFC-134a/143a and for the ternary refrigerant mixture HFC-125/134a/143a in the present work. These EOSs are effective in the temperature and pressure ranges where the experimental measurements covered, i.e., 200 K ≤ T ≤ 413 K, P ≤ 35 MPa for HFC-125/143a and HFC-125/134a; 243 K ≤ T ≤ 413 K, P ≤ 17 MPa for HFC-134a/143a and HFC-125/134a/143a. Experimental measurements in both single-phase and two-phase regions are represented by the present EOSs within their estimated uncertainties.

KW - Equation of state

KW - HFC-125

KW - HFC-134a

KW - HFC-143a

KW - Helmholtz free energy

KW - Hydrofluorocarbon

KW - Mixture

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DO - 10.1016/S0378-3812(99)00187-9

M3 - Conference article

AN - SCOPUS:0033600386

VL - 161

SP - 225

EP - 239

JO - Fluid Phase Equilibria

JF - Fluid Phase Equilibria

SN - 0378-3812

IS - 2

T2 - Proceedings of the 1998 5th Asian Thermophysical Properties Conference

Y2 - 3 August 1998 through 2 September 1998

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