Abstract
An 18-coefficient, modified Benedict-Webb-Rubin equation of state for R-134a (1,1,1,2-tetrafluoroethane) has been developed. New correlations of vapor pressure and saturated liquid density are also presented. The temperature scale in this paper is given in the new International Temperature Scale of 1990 (ITS-90). This equation of state has been developed based on the experimental data of PVT properties, saturation properties, and isochoric heat capacities by using a least-squares fitting. The experimental data of isobaric heat capacities, speed of sound, and second virial coefficients were also taken into consideration as secondary data. This equation of state is effective both in the super-heated gaseous phase and the compressed liquid phase at pressures up to 70 MPa, densities to 1,600 kg/m3, and temperatures from 180 K to 500 K.
| Original language | English |
|---|---|
| Pages (from-to) | 358-366 |
| Number of pages | 9 |
| Journal | ASHRAE Transactions |
| Volume | 100 |
| Issue number | 1 |
| Publication status | Published - 1994 Dec 1 |
| Event | Proceedings of the ASHRAE Winter Meeting - New Orleans, LA, USA Duration: 1994 Jan 23 → 1994 Jan 26 |
ASJC Scopus subject areas
- Building and Construction
- Mechanical Engineering