TRANSPORT-PROPERTIES OF 1,1,1,2-TETRAFLUOROETHANE (R134A)

被引:76
作者
KRAUSS, R
LUETTMERSTRATHMANN, J
SENGERS, JV
STEPHAN, K
机构
[1] UNIV MARYLAND,INST PHYS SCI & TECHNOL,COLL PK,MD 20742
[2] NATL INST STAND & TECHNOL,DIV THERMOPHYS,GAITHERSBURG,MD 20899
关键词
1,1,1,2-TETRAFLUOROETHANE; CORRELATION; CRITICAL REGION; EQUATION OF STATE; HFC-134A; R134A; THERMAL CONDUCTIVITY; TRANSPORT PROPERTIES; VISCOSITY;
D O I
10.1007/BF00502117
中图分类号
O414.1 [热力学];
学科分类号
摘要
New equations for the thermal conductivity and the viscosity of R134a that are valid in a wide range of pressures and temperatures are presented. They were obtained through a theoretically based, critical evaluation of the available experimental data, which showed considerable inconsistencies between data sets, in particular in the vapor phase. In the critical region the observed enhancement in the thermal conductivity is well represented by a crossover model for the transport properties of fluids. Since thermodynamic properties enter into the calculation of the critical enhancement of the transport properties, a new fundamental equation for the critical region was developed also.
引用
收藏
页码:951 / 988
页数:38
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