MEASUREMENTS OF TRANSPORT PROPERTIES OF LOW GWP REFRIGERANT HCFO-1224yd(Z) (CIS-1-CHLORO-2,3,3,3- TETRAFLUOROPROPENE; CF_3CF=CHCl)

摘要

HCFO-1224yd(Z) has been getting attention as a refrigerant of high temperature heat pump and as a workingrnfluid of organic Rankin cycle. For the design of a system and heat exchangers, transport properties, which arernthermal conductivity and viscosity, are required. In this study, experimentally measured viscosity of HCFO-rn1224yd(Z) are reported. The viscosity was measured by tandem capillary tubes method. Test fluid flowsrnthrough in long and short capillary tubes in series. Pressures at inlet and outlet are measured and viscosity canrnbe calculated by using the relation between viscosity and pressure loss. The experimental data on viscosity ofrnHCFO-1224yd(Z) are reported over the temperature range from 303 to 405 K at 3.0 MPa for liquid and inrnvapor phase from 414 to 475 K at 2.0 MPa.