Vorläufige Zustandsgleichungen für das ozonunschädliche Kältemittel R 134a

authored by

H. D. Baehr, S. Kabelac

Abstract

The stratospherically safe refrigerant tetrafluoroethane (R 134a) is a possible substitute for R 12. Following the publication of the first measurements of R 134a's vapor pressure, saturated liquid density, and pressure on five isochores in the gas range, in this work fairly simple equations are formulated by which the following properties in the region important to refrigeration can be calculated: vapor pressure, specific volume, specific enthalpy and specific entropy. These new equations fit the experimental values very well. They must be regarded, however, as preliminary because they rely only on relatively few measurements. For the liquid range, only a few measurements for the saturated liquid are available.

Organisation(s)

Institute of Thermodynamics

Type

Article

Journal

KI - Klima, Kälte, Heizung : Fachzeitschrift für technische Gebäudeausrüstungen

Volume

17

Pages

69-71

No. of pages

3

ISSN

0172-1984

Publication date

1989

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

General Medicine