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Comparison of generalized equations of state to predict gas-phase heat capacity

✍ Scribed by Dimitrios Garipis; Michael Stamatoudis

Publisher
American Institute of Chemical Engineers
Year
1992
Tongue
English
Weight
389 KB
Volume
38
Category
Article
ISSN
0001-1541

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✦ Synopsis

Many engineering calculations require reliable estimation of basic thermodynamic properties of substances. Several methods of calculating them have been compared: for enthalpy ; for density and fugacity ; and for entropy . In addition, the heat capacity at constant pressure, C,, is an important physical property both from an industrial and an academic viewpoint. There is a general scarcity of experimental data, particularly for polar compounds and for mixtures. Estimation of C, from generalized equations of state is not expected to be very accurate, since it requires second-order derivatives. There is no comparative study available for predicting heat capacities of real gases reliably.

The heat capacities of gases at zero pressure (ideal gases) are available in the literature (

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