Main Title |
Thermal Conductivity of R134a. |
Author |
Laesecke, A. ;
Perkins, R. A. ;
Nieto de Castro, C. A. ;
|
CORP Author |
National Inst. of Standards and Technology (CSTL), Boulder, CO. Thermophysics Div.;Environmental Protection Agency, Washington, DC. |
Publisher |
1992 |
Year Published |
1992 |
Stock Number |
PB94-213063 |
Additional Subjects |
Fluorohydrocarbons ;
Thermal conductivity ;
Supercritical fluids ;
Refrigerants ;
Substitutes ;
Temperature dependence ;
Reprints ;
R134a ;
Ethane/tetrafluoro
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB94-213063 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
12p |
Abstract |
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 + or - 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. |
Supplementary Notes |
Sponsored by Environmental Protection Agency, Washington, DC. |
Availability Notes |
Pub. in Fluid Phase Equilibria 80, p263-274 1992. |
NTIS Title Notes |
Final rept. |
Title Annotations |
Reprint: Thermal Conductivity of R134a. |
Category Codes |
46; 99F |
NTIS Prices |
Not available NTIS |
Primary Description |
NBS-370 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
430125045 |
Origin |
NTIS |
Type |
CAT |