BIBLIOS

Document type
Journal articles

Document subtype
Full paper

Title
Thermal conductivity of R134a

Participants in the publication
A. Laesecke (Author)
R.A. Perkins (Author)
C.A. Nieto de Castro (Author)
Dep. Química e Bioquímica
CQE

Summary
Thermal conductivity measurements are reported for the alternative refrigerant 1,1,1,2-tetrafluoroethane (R134a). These measurements were made over the temperature range from 200 to 390 K at pressures to 70 MPa. Data are reported for the liquid, vapor, and supercritical fluid phases. A significant critical enhancement is observed for R134a. A thermal conductivity surface, which fits our data to ±3.8% at 95% confidence, is provided for R134a. Correlations are also provided for the saturated vapor and saturated liquid thermal conductivity of R134a. Comparisons are made with other available thermal conductivity data for the dilute gas, saturated vapor, and saturated liquid.


Institution
FACULDADE DE CIÊNCIAS DA UNIVERSIDADE DE LISBOA

Where published
Fluid Phase Equilibria

Publication Identifiers

Publisher
Elsevier BV



Document Identifiers
DOI - https://doi.org/10.1016/0378-3812(92)87073-v
URL - http://dx.doi.org/10.1016/0378-3812(92)87073-v

Keywords
1 2-tetrafluoroethane (R134a) refrigerant thermal conductivity low temperatures high pressures liquid vapor supercritical fluid critical enhancement surface fit

Download