A constant volume apparatus for vapour pressure and gas phase P-ν-T measurements: validation with data for R22 and R134a

Vapor Phase PνTx Measurements of Binary Blends of 2,3,3,3-Tetrafluoroprop-1-ene + Isobutane and trans-1,3,3,3-Tetrafluoroprop-1-ene + Isobutane

“…The core of the experimental setup consisted of a constant-volume sphere and two temperature baths: one of which operated over a temperature range of (210 to 290) K while the other operated over a temperature range of (290 to 380) K. Since details of the experimental apparatus, − experimental procedure, − and experimental uncertainties − have been previously reported, only a brief summary is provided here.…”

PVTx measurements for N2O+CH3F, N2O+CH2F2, and N2O+CHF3 binary systems

“…As in earlier work [7,8], temperature is controlled by a PID device and measured with a calibrated resistance thermometer; the temperature's total uncertainty was found to be lower than ±0.02 K. The uncertainty in the pressure measurements is due to the uncertainty of the transducer, the null indicator system, and the pressure gauges. The digital pressure indicator (Ruska, mod.…”

Climate Change and Refrigerants: Thermodynamic Properties of Low-GWP Fluids for Domestic Applications and Binary Systems for Low-Temperature Options

“…A schematic view of the experimental setup is shown in Figure 1. For details of the setup, the measurement procedure and the uncertainties are given in previous works [16,17] and only a summary of the information is reported in this section. The spherical cell (1) containing the refrigerant sample is connected to a differential diaphragm pressure transducer (4) coupled to an electronic null indicator (5).…”