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 language | English |
|---|---|
| Pages (from-to) | 347-352 |
| Number of pages | 6 |
| Journal | International Journal of Refrigeration |
| Volume | 16 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 1993 |
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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 journal › Article
}
TY - JOUR
T1 - An equation of state for 1,1-difluroethane (HFC 152a)
AU - Tamatsu, Takeshi
AU - Sato, Haruki
AU - Watanabe, Koichi
PY - 1993
Y1 - 1993
N2 - 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.
AB - 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.
KW - calculation
KW - equation of state
KW - measurement
KW - R152a
KW - refrigerant
UR - http://www.scopus.com/inward/record.url?scp=1942427726&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=1942427726&partnerID=8YFLogxK
U2 - 10.1016/0140-7007(93)90007-U
DO - 10.1016/0140-7007(93)90007-U
M3 - Article
AN - SCOPUS:1942427726
VL - 16
SP - 347
EP - 352
JO - International Journal of Refrigeration
JF - International Journal of Refrigeration
SN - 0140-7007
IS - 5
ER -