A111 3成分系R-1234ze(E)+R-32+CO_2混合冷媒の熱力学性質の測定(OS-7:次世代ヒートポンプ・冷凍システム(1))

抄録

Measurements or PvTx (pressure-volume-temperature-composition) properties and saturated densities near the critical point for ternary 54 mass% R-1234ze(E) + 43 mass% R-32 + 3 mass% CO_2 refrigerant mixture were made by the isochoric method and by the direct observation of meniscus disappearance. One hundred and two PvTx property data for this ternary systems were obtained in the temperature range from 310 K to 385 K, and pressure up to 6.9MPa along six isochores. Moreover thirteen saturated vapor and liquid densities near the critical point for ternary 54 mass% R-1234ze(E) + 43 mass% R-32 + 3 mass% CO_2 refrigerant mixture were obtained in the temperature range from 345.9 K to 363.2 K, and densities from 240.6 kg/m^3 to 807.5 kg/m^3. The critical temperature T_c and critical density p_c were directly determined by the visual observation of meniscus disappearance.