Publication
Prediction of the vapor pressure of environmentally acceptable halocarbons.
| dc.contributor.author | Fialho, Paulo | |
| dc.contributor.author | Nieto de Castro, Carlos A. | |
| dc.date.accessioned | 2013-09-16T12:05:17Z | |
| dc.date.available | 2013-09-16T12:05:17Z | |
| dc.date.issued | 2000-03 | |
| dc.date.updated | 2013-08-09T12:08:57Z | |
| dc.description | Copyright © 2000 Plenum Publishing Corporation. | en |
| dc.description.abstract | The vapor pressure and its dependence on temperature of halocarbons for 0.002< p R<1 have been analyzed in terms of universal behavior. Results for CFC-114, HCFC-123, HCFC-141b, HCFC-142b, HCFC-143a, HFC-23, HFC-32, HFC-134, HFC-125, HFC-134a, and HFC-152a for reduced temperatures between 0.55 and 1.0 show that the reduced vapor pressure can be expressed as a function of 1−T R by a Padé approximant. Deviations of the correlated data from the universal function do not amount to more than ±0.06 MPa, with an average deviation of 0.025 MPa. Predictions of the saturation vapor pressures of HCFC-124, HCFC-225ca, and HCFC-225cb, which are the systems used to test the capability of this scheme, agree within 0.025 MPa, that is, within the accuracy of the corresponding states correlation. However, for HFC-236ea, the deviations are as large as -0.07 MPa. The present scheme can be used to calculate the Pitzer acentric factor, and an average value of ω=0.269±0.015 is obtained for all the fluids. | en |
| dc.identifier.citation | Fialho, Paulo; Nieto de C. C. A. (2000). "Prediction of the vapor pressure of environmentally acceptable halocarbons", «International Journal of Thermophysics», 21(2): 385-392. http://dx.doi.org/10.1023/A:1006631512597. | en |
| dc.identifier.issn | 0195-928X (Print) | |
| dc.identifier.issn | 1572-9567 (Online) | |
| dc.identifier.uri | http://hdl.handle.net/10400.3/2253 | |
| dc.language.iso | eng | por |
| dc.peerreviewed | yes | por |
| dc.publisher | Springer Verlag (Germany) | por |
| dc.relation.publisherversion | http://dx.doi.org/10.1023/A:1006631512597 | por |
| dc.subject | Halocarbons | en |
| dc.subject | Prediction | en |
| dc.subject | Vapor Pressure | en |
| dc.subject | Universal Correlation | en |
| dc.title | Prediction of the vapor pressure of environmentally acceptable halocarbons. | en |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.citation.endPage | 392 | por |
| oaire.citation.issue | (2) | por |
| oaire.citation.startPage | 385 | por |
| oaire.citation.title | International Journal of Thermophysics | en |
| oaire.citation.volume | 21 | por |
| rcaap.rights | openAccess | por |
| rcaap.type | article | por |