Thermodynamic properties of HFC-32 (difluoromethane)

Piao C-C, Noguchi M, Sato H, Watanabe K. An improved equation of state for R-134a ASHRAE Transacs. 1994, 100(1). Piao C-C, Noguchi M, Sato H, Watanabe K. Equation of State of HCFC-123. Final Report to the IEA-Annex 18, 1993. Piao, 1998, An international standard equation of state for the thermodynamic properties of HFC-125 (pentafluoroethane), J. Phys. Chem. Ref. Data, 27, 775, 10.1063/1.556021 Malbrunot, 1968, Pressure–volume–temperature behavior of difluoromethane, J. Chem. Eng. Data, 13, 16, 10.1021/je60036a006 Holste JC, Duarte-Garza HA. Thermodynamic properties measurements. ASME Winter Annual Meeting, New Orleans, LA, 28 November–3 December 1993. Qian, 1993, Compressibility factor and virial coefficients of difluoromethane (HFC-32) determined by Burnett method, JSME Int. J., 36, 665, 10.1299/jsmeb.36.665 Bouchot C, Richon D. Simulaneous measurements of phase equilibrium and volumetric properties by vibrating tube densimetry: apparatus and results invoving HFC. In Proceedings: CFC's, The Day After, Joint Meeting of IIR Commissions, 1994. Defibaugh, 1994, Thermodynamic properties of difluoromethane (R32), J. Chem. Eng. Data, 39, 333, 10.1021/je00014a032 Sato, 1994, PVT property measurements for difluoromethane, J. Chem. Eng. Data, 39, 851, 10.1021/je00016a048 de Vries B. Thermodynamic properties of alternative refrigerants R-32, R-125, and R-143a — measurements and equation of state Forsch.-Ber. DKV No. 55. DKV-Verlag, Stuttgart, 1997. Magee, 1996, Isochoric p-ρ-T measurements on difluoromethane (R32) form 142 to 396 K and pentafluoroethane (R125) from 178 to 398 K at pressures to 35 MPa, Int. J. Thermophys, 17, 803, 10.1007/BF01439191 Lüddecke, 1996, Molar heat capacity at constant volume of difluoromethane (R32) and pentafluoroethane (R125) from the triple-point temperature to 345 K at pressures to 35 MPa, Int. J. Thermophys, 17, 823, 10.1007/BF01439192 Kanungo, 1987, Vapor pressure isotope effects in liquid methylene difluoride, J. Phys. Chem., 91, 4198, 10.1021/j100299a049 Holcomb, 1993, Coexisting densities, vapor pressures and critical densities of refrigerants R-32 and R-152a, at 300 to 385 K, Fluid Phase Equilibria, 91, 145, 10.1016/0378-3812(93)85085-Z Nagel, 1993, Dampf/Flüssigkeitsgleichgewichte von neuen Kältemittelmischungen als Alternativen zu R22 und R502, DKV-Tagungsber, 20, 39 Weber, 1993, Ebulliometric measurement of the vapor pressure of difluoromethane, J. Chem. Eng. Data, 38, 254, 10.1021/je00010a018 Weber, 1994, Measurements of the vapor pressures of difluoromethane, 1-Chloro-1,222-tetrafluoroethane, and pentafluoroethane, J. Chem. Eng. Data, 39, 808, 10.1021/je00016a038 Widiatmo, 1994, Saturated-liquid densities and vapor pressures of 1,1,1-trifluoroethane, difluoromethane, and pentafluoroethane, J. Chem. Eng. Data, 39, 304, 10.1021/je00014a025 Kuwabara, 1995, Vapor-liquid coexistence curve in the critical region and the critical temperatures and densities of difluoromethane and pentafluoroethane, J. Chem. Eng. Data, 40, 112, 10.1021/je00017a025 Higashi, 1994, Critical parameters for HFC134a, HFC32 and HFC125, Int. J. Refrig, 17, 524, 10.1016/0140-7007(94)90028-0 Yomo M, Sato H, Watanabe K. An experimental study of isobaric heat capacity of liquid HFC-32. MS thesis, Keio University, Yokohama, Japan, 1994. Hozumi, 1994, Speed of sound in gaseous difluoromethane, J. Chem. Eng. Data, 39, 493, 10.1021/je00015a020 Takagi, 1993, Ultrasonic speeds in liquid difluoromethane under high pressures, High Temp.-High Pressures, 25, 685 Grebenkov AJ, Kotelevsky YG, Saplitza VV, Beljaeva OV, Zajatz TA, Timofeev BD. Experimental study of thermal conductivity of some ozone safe refrigerants and speed of sound in their liquid phase. In Proceedings: CFC's, The Day After, Joint Meeting of IIR Commissions, Padova, Italy, 21–23 September 1994. Piao, C.-C., Noguchi, M., Sato, H. and Watanabe, K. Thermodynamic properties of a new working fluid HFC-32. In Proceedings of JAR Annual Conf. 17–18 November 1993, Osaka, Japan, pp. 13–16.