THE STABILITY OF VAPOR CONDENSATION EQUILIBRIUM

Shimin Zhang
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Shimin Zhang: College of Chemistry & Chemical Engineering, Central South University, Changsha, Hunan, P. R. China

Surface Review and Letters (SRL), 2005, vol. 12, issue 03, 359-368

Abstract: The system must get across an energy peak of unstable equilibrium during the condensation of pure vapor; as the supersaturated extent of vapor increases and the temperature decreases, the energy peak shortens and vapor condensation becomes easier. The system must get across an energy peak of unstable equilibrium first, and then get into an energy valley of stable equilibrium during the condensation of impure vapor; as the partial pressure of vapor decreases, the energy peak becomes taller, the energy valley more shallow, vapor condensation becomes more difficult and liquid evaporation becomes easier; when the partial pressure of vapor decreases to a certain extent, the energy peak and the energy valley combine into one, and vapor condensation becomes impossible.

Keywords: Stability of equilibrium; supersaturated vapor; vapor condensation; Kelvin equation (search for similar items in EconPapers)
Date: 2005
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DOI: 10.1142/S0218625X05007141

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