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A modified van der Waals type equation of state

✍ Scribed by G. Schmidt; H. Wenzel

Publisher
Elsevier Science
Year
1980
Tongue
English
Weight
804 KB
Volume
35
Category
Article
ISSN
0009-2509

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✦ Synopsis

A cubic equation of the van der Waals type 1s presented wtth the cntlcal compress~lxhty factor taken as substance dependent Input requrrements are Pltzer's acentnc factor and the crItIca temperature and pressure Parameter b IS treated as Independent of temperature, and the temperature dependence of parameter (I 1s gven by an expresston slmdar to that proposed by Soave A test on vapour pressure IS presented for more than one hundred substances and on hquld density for 65 substances and comparisons are given with rest&s of Soave's and Peng-Robmson's equahons Representation of vapour pressure, particularly at low pressures, and of the hqmd density has been Improved The equation IS restrlcted to non-assoclatmg compounds

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