Prediction of saturated liquid viscosity for some halocarbon refrigerants based on the van der Waals model

Kumagai, A.; Miura-Mochida, H.; Yokoyama, Chiaki

doi:10.1007/bf01563714

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“…Consequently, this has been a topic of investigation for refrigerants [1][2][3]. Although traditionally fluidity correlations as a function of the molar volume are more representative [4,5], designers continue to seek temperature dependence of viscosity coefficient.…”

Section: Introductionmentioning

confidence: 99%

Saturated liquid viscosity correlations for alternative refrigerants

Khan

Srinivasan

1996

Int J Thermophys

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This article presents dimensionless equations for the temperature dependence of the saturated liquid viscosity of R32, R123, R124, R125, R134a, R141b, and R152a valid over a temperature range of engineering interest. The correlation has the form m" -A ~D-+BTD where ~D is the dimensionless fluidity (l/r/D) and TD is a dimensionless temperature, n, A, and B are evaluated for each of the above refrigerants based on a least-squares fit to experimental data. This equation is found to provide an improved fit over those existing in the literature up to To = 0.8.

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Section: Introductionmentioning

confidence: 99%