Measurements of transport properties of low GWP refrigerant HCFO-1224yd(Z) (CIS-1-CHLORO-2,3,3,3-tetrafluoropropene; CF3CF=CHCI).

HCFO-1224yd(Z) has been getting attention as a refrigerant of high temperature heat pump and as a working fluid of organic Rankin cycle. For the design of a system and heat exchangers, transport properties, which are thermal conductivity and viscosity, are required. In this study, experimentally measured viscosity of HCFO-1224yd(Z) are reported. The viscosity was measured by tandem capillary tubes method. Test fluid flows through in long and short capillary tubes in series. Pressures at inlet and outlet are measured and viscosity can be calculated by using the relation between viscosity and pressure loss. The experimental data on viscosity of HCFO-1224yd(Z) are reported over the temperature range from 303 to 405 K at 3.0 MPa for liquid and in vapor phase from 414 to 475 K at 2.0 MPa.