Isobaric heat capacity for liquid 1-chloro-1,1-difluoroethane and 1,1-difluoroethane
- Keio Univ., Yokohama (Japan). Dept. of Mechanical Engineering
The isobaric heat capacities (C[sub P]) for liquid 1-chloro-1,1-difluoroethane (HCFC-142b) and 1,1-difluoroethane (HFC-152a) have been measured by means of flow calorimetry. For HCFC-142b, 31 C[sub P] values have been measured at temperatures from 276 to 350 K and pressures from 1.0 to 3.0 MPa. For HFC-152a, 36 C[sub P] have been measured at temperature from 276 to 360 K and pressures from 1.0 to 3.2 MPa. The uncertainties are estimated as [plus minus] 13 mK in temperature, [plus minus]3 kPa in pressure, and [plus minus] kPa in pressure, and [plus minus]0.4% for most of the C[sub P] measurements. The purity of samples used for both HCFC-142b and HFC-152a measurements was 99.95 mol%. Correlations of liquid C[sub P] as a function of temperature and pressure have been developed for both refrigerants on the basis of the measurements.
- OSTI ID:
- 6045685
- Journal Information:
- Journal of Chemical and Engineering Data; (United States), Vol. 38:1; ISSN 0021-9568
- Country of Publication:
- United States
- Language:
- English
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