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Temperature-dependent and pressure-dependent correlations for liquid dynamic viscosity of low-GWP refrigerants.

Number: 1954

Author(s) : DI NICOLA G., TOMASSETTI S., PIERANTOZZI M., MUCIACCIA P. F.

Summary

This work presents semi-empirical correlations to describe the temperature dependence and the pressure dependence of the dynamic viscosity of low global warming potential (GWP) refrigerants, namely HydroFluoroOlefins (HFOs) and HydroChloroFluoroOlefins (HCFOs), in the liquid phase. As first step, the experimental liquid dynamic viscosity data available in scientific literature and databases were collected and statistically analysed. From the data collected for low pressures, the Latini et al. (2002, 1996, 1990) correlation for the dynamic viscosity of liquid refrigerants in saturated conditions was re-fitted and constants expressly dedicated to low GWP refrigerants were obtained. Then, the proposed temperature-dependent correlation was modified to model the liquid dynamic viscosity dependence on pressure. The capability of the presented temperature and pressure dependent correlation to describe the liquid viscosity of the studied fluids was compared with REFPROP 10.0.

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Pages: 8

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Details

  • Original title: Temperature-dependent and pressure-dependent correlations for liquid dynamic viscosity of low-GWP refrigerants.
  • Record ID : 30028904
  • Languages: English
  • Subject: HFCs alternatives
  • Source: 6th IIR Conference on Thermophysical Properties and Transfer Processes of Refrigerants
  • Publication date: 2021/09/01
  • DOI: http://dx.doi.org/10.18462/iir.TPTPR.2021.1954
  • Document available for consultation in the library of the IIR headquarters only.

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