Y. Uchida, Masahiko Yasumoto, Yasufu Yamada
Oct 22, 2004
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0
Influential Citations
17
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Journal
Journal of Chemical & Engineering Data
Abstract
Trifluoromethoxymethane (CF3OCH3, HFE-143m) is a promising alternative for dichlorodifluoromethane (CCl2F2, CFC-12) as a refrigerant. Because of its low flammability, it is expected to be used in binary mixtures with inflammable hydrofluorocarbons (HFCs). In this study, we measured the critical parameters of binary mixtures of HFE-143m with four HFCspentafluoroethane (CHF2CF3, HFC-125), 1,1,1,2-tetrafluoroethane (CH2FCF3, HFC-134a), 1,1,1,2,3,3,3-heptafluoropropane (CF3CHFCF3, HFC-227ea), and 1,1,1,2,3,3-hexafluoropropane (CHF2CHFCF3, HFC-236ea). The uncertainties were ±10 mK in temperature, ±0.5 kPa in pressure, ±1 kg m-3 in density, and ±0.5% in composition (molar base). The HFCs were selected for the similarities of their normal boiling points. The experimental data were correlated with equations proposed by Higashi.