This paper provides 84 two-phase and 66 vapor phase PvTx measurements for binary blends comprising difluoromethane (R32) and cis-1,3,3,3-tetrafluoroprop-1-ene (R1234ze(Z)). The data are for seven isochores (0.013352, 0.016365, 0.023746, 0.026769, 0.035001, 0.070089, 0.071713) m3·kg-1 for the temperature range from (263 to 373) K for seven R32 mole fractions (0.0871, 0.2980, 0.3620, 0.5232, 0.7128, 0.8015, 0.8973). The flash method coupled with the Peng-Robinson equation of state and a two-parameter cubic equation of state proposed by Stryjek was used to derive the vapor-liquid equilibrium of the R32 (1) + R1234ze(Z) (2) binary pair from the two-phase measurements. The measured properties in the superheated vapor region were correlated through the aforementioned equations of state and a truncated virial equation of state. The PvTx data display good agreement with both the values calculated from the equations of state and from REFPROP 10.0 predictions.
Two-Phase and Vapor Phase PvTx Properties of the Difluoromethane + cis-1,3,3,3-Tetrafluoroprop-1-ene Binary System
Tomassetti S.;Di Nicola G.;Pierantozzi M.;
2020-01-01
Abstract
This paper provides 84 two-phase and 66 vapor phase PvTx measurements for binary blends comprising difluoromethane (R32) and cis-1,3,3,3-tetrafluoroprop-1-ene (R1234ze(Z)). The data are for seven isochores (0.013352, 0.016365, 0.023746, 0.026769, 0.035001, 0.070089, 0.071713) m3·kg-1 for the temperature range from (263 to 373) K for seven R32 mole fractions (0.0871, 0.2980, 0.3620, 0.5232, 0.7128, 0.8015, 0.8973). The flash method coupled with the Peng-Robinson equation of state and a two-parameter cubic equation of state proposed by Stryjek was used to derive the vapor-liquid equilibrium of the R32 (1) + R1234ze(Z) (2) binary pair from the two-phase measurements. The measured properties in the superheated vapor region were correlated through the aforementioned equations of state and a truncated virial equation of state. The PvTx data display good agreement with both the values calculated from the equations of state and from REFPROP 10.0 predictions.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
