Vorläufige Zustandsgleichungen für das ozonunschädliche Kältemittel R 134a

verfasst von

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.

Organisationseinheit(en)

Institut für Thermodynamik

Typ

Artikel

Journal

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

Band

17

Seiten

69-71

Anzahl der Seiten

3

ISSN

0172-1984

Publikationsdatum

1989

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Allgemeine Medizin