Procedures for determining the critical parameters of fluids
作者:
S. Okazaki,
Y. Higashi,
Y. Takaishi,
M. Uematsu,
K. Watanabe,
期刊:
Review of Scientific Instruments
(AIP Available online 1983)
卷期:
Volume 54,
issue 1
页码: 21-25
ISSN:0034-6748
年代: 1983
DOI:10.1063/1.1137208
出版商: AIP
数据来源: AIP
摘要:
An apparatus and procedures to determine the critical parameters and the vapor–liquid coexistence curve in the critical region by observing the disappearance of the vapor–liquid interface are described. The apparatus has the advantage of measuring the saturated vapor and liquid densities with only a single filling of the sample, and the procedures are applicable not only to pure fluids but also to mixtures. Three densities of liquid and eight of vapor on the coexistence curve for trifluoromethane are obtained, and the critical temperature, density, and pressure are also determined.
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