Isobaric Heat Capacity for Liquid 1-Chloro-1,1-difluoroethane and 1,1-Difluoroethane

Shinsuke Nakagawa, Tatsuji Hori, Haruki Sato, Koichi Watanabe

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

The isobaric heat capacities (Cp) 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 CP values have been measured at temperatures from 276 to 350 K and pressures from 1.0 to 3.0 MPa. For HFC-152a, 36 CP have been measured at temperatures from 276 to 360 K and pressures from 1.0 to 3.2 MPa. The uncertainties are estimated as ±13 mK in temperature, ±3 kPa in pressure, and ±0.4% for most of the CP measurements. The purity of samples used for both HCFC-142b and HFC-152a measurements was 99.95 mol %. Correlations of liquid CP as a function of temperature and pressure have been developed for both refrigerants on the basis of the measurements.

Original languageEnglish
Pages (from-to)70-74
Number of pages5
JournalJournal of Chemical and Engineering Data
Volume38
Issue number1
DOIs
Publication statusPublished - 1993 Jan 1

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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