BURNETT MEASUREMENTS AND VIRIAL COEFFICIENTS FORTHE R32 + N2O SYSTEM

摘要

The experimental results for the difluoromethane (R32) + nitrous oxide (N2O) system will be presented.rnThe Burnett apparatus was calibrated using helium, and its performance was confirmed by measurements forrnpure N2O. The values of the virial coefficients for R32 were adopted from our previous measurements as thernsame sample was used in the present study.rnPVTx measurements were performed for the binary R32 + N2O system for four isotherms (303, 323, 343 andrn363 K). Twenty Burnett expansions were performed in a pressure range from 5000 to 150 kPa. The secondrnand third virial coefficients along with the second and third cross virial coefficients were derived fromrnexperimental results.