Isochoric Specific Heat Capacity of Difluoromethane (R32) and a Mixture of 51.11 mass% Difluoromethane (R32) +48.89 mass% Pentafluoroethane (R125)

摘要

The isochoric heat capacity (c{sub}v) of difluoromethane (R32) and a mixture of 51.11 mass% R32+48.89 mass% pentafluoroethane (R125) was measured at temperatures from 268 K to 328 K and at pressures up to 30MPa. The reported density measurements are in the single-phase region and cover a range of ρ > 800 kg · m{sup}(-3). The measured data are compared with results measured by other researchers. Also, the measured data are examined with available equations of state. As a result, it is found that the measured c{sub}v 's agree well with those of other researchers in the measurement range of the present study.