| Autor: |
Kitajima, H., Kagawa, N., Tsuruno, S., Watanabe, K. |
| Zdroj: |
International Journal of Thermophysics; November 2005, Vol. 26 Issue: 6 p1733-1742, 10p |
| Abstrakt: |
The isochoric heat capacity (cv) and pressure–volume–temperature-composition (pvTx) properties were measured for propane + isobutane mixtures in the liquid phase and in the supercritical region. The expanded uncertainty (k = 2) of temperature measurements is estimated to be ±13 mK, and that of pressure measurements is ±8 kPa. The expanded relative uncertainty for cv is ±3.2% for the liquid phase, increasing to ±4.8% for near-critical densities. The expanded uncertainty for density is estimated to be ±0.16%. The present measurements for {xC3H8 +(1−x)i-C4H10} with x = 0.0, 0.498, 0.756, and 1.0, were obtained at 659 state points at temperatures from 270 to 420 K and at pressures up to 30 MPa. The experimental data were compared with a published equation of state. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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