Details
| Translated title of the contribution | Preliminary equations of state for the ozone-friendly refrigerant R 134a |
|---|---|
| Original language | German |
| Pages (from-to) | 69-71 |
| Number of pages | 3 |
| Journal | KI - Klima, Kälte, Heizung |
| Volume | 17 |
| Issue number | 2 |
| Publication status | Published - 1989 |
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.
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In: KI - Klima, Kälte, Heizung, Vol. 17, No. 2, 1989, p. 69-71.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Vorläufige Zustandsgleichungen für das ozonunschädliche Kältemittel R 134a
AU - Baehr, H. D.
AU - Kabelac, S.
N1 - Copyright: Copyright 2017 Elsevier B.V., All rights reserved.
PY - 1989
Y1 - 1989
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0024586294&partnerID=8YFLogxK
M3 - Artikel
AN - SCOPUS:0024586294
VL - 17
SP - 69
EP - 71
JO - KI - Klima, Kälte, Heizung
JF - KI - Klima, Kälte, Heizung
SN - 0172-1984
IS - 2
ER -