THERMAL-CONDUCTIVITY OF THE NEW REFRIGERANTS R134A, R152A, AND R123 MEASURED BY THE TRANSIENT HOT-WIRE METHOD

被引：55

作者：

GROSS, U

SONG, YW

HAHNE, E

机构：

[1] Institut für Thermodynamik und Wärmetechnik, Universität Stuttgart, Stuttgart 80, 7000

来源：

INTERNATIONAL JOURNAL OF THERMOPHYSICS | 1992年 / 13卷 / 06期

关键词：

REFRIGERANTS; R134A; R152A; R123; THERMAL CONDUCTIVITY; TRANSIENT HOT-WIRE METHOD;

D O I：

10.1007/BF01141209

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Thermal-conductivity measurements are reported for the new refrigerants R134a, R152a und R123. Transient hot-wire experiments were performed which cover both the liquid and vapor states at temperatures and pressures ranging from theta = -20-degrees-C to 90-degrees-C and from p = 0.1 bar to 60 bar respectively. The results are correlated with density and temperature. In addition temperature dependent correlations are presented for (i) saturated liquid, (ii) saturated vapor, (iii) ideal gas (which equals approximately vapor state at ambient pressure). Finally the results are compared with data from the literature and also with the thermal conductivities of R12 and R11.

引用

页码：957 / 983

页数：27

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