We have measured the isochoric heat capacity \(C_{V}\) of carbon dioxide in both the one-phase and two-phase regions near the critical point. Temperatures varied from \(280 \mathrm{~K}\) to \(355 \mathrm{~K}\), and densities varied from \(461.2 \mathrm{~kg} \cdot \mathrm{m}^{-3}\) to \(519.2 \mathrm
Isochoric heat capacity cvof carbon dioxide and sulfur hexafluoride in the critical region
✍ Scribed by L. Beck; G. Ernst; J. Gürtner
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 232 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0021-9614
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✦ Synopsis
For a c v -calorimeter of small dimensions, the procedure of measurement was changed from discontinuous to continuous to avoid heat loss and to increase the output of c v data. Values of c v were measured in the vicinity of the critical point. The critical exponent α was fitted to the values of c v measured at nearly critical density. Results for c v and α of CO 2 and SF 6 are presented.
📜 SIMILAR VOLUMES
We have determined the p, T, , x phase boundaries in three mixtures of 1 y x CO q 2 4 Ž . x C H , with x s 0.2516 , 0.4924 , and 0.7397 , in the vicinity of the critical locus from 2 6 6 5 8 measurements of the relative dielectric permittivity . We combined accurate measurements r of with the Clausi
Flow calorimetric measurements of the excess molar enthalpy H E m for {xCO 2 + (1 -x) C 2 H 4 } are described. The measurements cover the range T = 260.95 K to T = 315.75 K at pressures from 3.5 MPa to 12.6 MPa. Liquid phase measurements were made at the pressure 11.0 MPa over the range T = 260.95 t