An equation of state for 1,1-difluroethane (HFC 152a)

Takeshi Tamatsu, Haruki Sato, Koichi Watanabe

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

An equation of state for 1,1-difluoroethane (HFC 152a, CH3CHF2) has been developed on the basis of reliable experimental data including PVT, liquid Cp, and saturated-liquid-density data measured by our group. It is a non-dimensionalized virial equation whose functional form is the same as that originally developed for 1,1,1,2-tetrafluoroethane (HFC 134a) in our group. The effective range is for pressures up to 15 MPa, temperatures from 230 to 450 K, and densities to 1000 kg m-3. The equation represents reliable PVT measurements within ± 1% in pressure for the superheated vapour and supercritical fluid, while within ±0.5% in density for the compressed liquid. In addition, it should be noted that the equation represents the other essential thermodynamic properties including vapour pressures, saturated-liquid/ vapour densities, isobaric/isochoric specific heats and sound velocity in both the liquid and gaseous phase of HFC 152a.

Original languageEnglish
Pages (from-to)347-352
Number of pages6
JournalInternational Journal of Refrigeration
Volume16
Issue number5
DOIs
Publication statusPublished - 1993

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norflurane
Vapor Pressure
Equations of state
liquids
Liquids
Thermodynamics
vapor pressure
Hot Temperature
Pressure
Density of liquids
Density of gases
Temperature
Supercritical fluids
Acoustic wave velocity
specific heat
Vapor pressure
Specific heat
Thermodynamic properties
vapors
thermodynamics

Keywords

  • calculation
  • equation of state
  • measurement
  • R152a
  • refrigerant

ASJC Scopus subject areas

  • Food Science
  • Mechanical Engineering

Cite this

An equation of state for 1,1-difluroethane (HFC 152a). / Tamatsu, Takeshi; Sato, Haruki; Watanabe, Koichi.

In: International Journal of Refrigeration, Vol. 16, No. 5, 1993, p. 347-352.

Research output: Contribution to journalArticle

Tamatsu, Takeshi ; Sato, Haruki ; Watanabe, Koichi. / An equation of state for 1,1-difluroethane (HFC 152a). In: International Journal of Refrigeration. 1993 ; Vol. 16, No. 5. pp. 347-352.
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