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National Repository of Grey Literature 4 records found  Search took 0.01 seconds. 
The first variants of a new system of simple, middle accurate approximations of some state variables and derivatives of wet vapor of H2O
 Bayer, Zdeněk
A set of approximations for the specific volume of saturated liquid and saturated vapor, saturation pressure and for theirs derivatives as well as a concept of some theirs combinations is given.
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Description of state behavior along the critical isotherm and along the saturation curve using simple equations of state. Part II
 Bayer, Zdeněk
The contribution deals with a group of 13 equations of state (EOS), predominantly of the van der Waals type, both classical and also newly developed in the IT AS ČR. In the region from the triple- to the critical points, the changes in the temperature functions (1st criterion), deviations of the derivate from the correct value, (2nd criterion), and the course of the liquid spinodal are investigated. Ordinary water substance is used as the model medium. The data and/or equations following from the critical point and saturation curve conditions are given. The calculations showed that considerable improvements may be arrived at separately applied criteria but at their simultaneous application the improvement has been not gained.
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Description of state behavior along the critical isotherm and along the saturation curve using simple equations of state ů part I
 Bayer, Zdeněk
The contribution deals with a group of 13 equations of state (EOS), predominantly of the van der Waals type, both classical and also newly developed in the Institute. In the region from the triple- to the critical points, the changes in the temperature functions (1st criterion), deviations of the derivate (2nd criterion), and the course of the liquid spinodal are investigated. Ordinary water substance is used as the model medium. The possibilities of improving EOS of this type are searched. While at separately applied criteria some improvements were arrived at, the simultaneous application of criteria gave no satisfactory results.
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Popis stavového chování na kritické izotermě a na mezní křivce pomocí jednoduchých stavových rovnic. Část III
 Bayer, Zdeněk
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