Calculation of complex equilibria involving vaporization into vacuum
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A simplified, direct approach is presented to the description of complex equilibria involving vaporization into vacuum. Emphasis is on the basic problem-solving process and on modification of existing techniques. Sequential solutions are presented to problems involving purification of a melt by vaporization into vacuum. The effects of concentration of melt and oxygen partial pressures on vaporization rates are demonstrated.Keywords:
Vaporization
Sous vide
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Supersaturation
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Stefan problem
Component (thermodynamics)
Liquid metal
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Sublimation
Vaporization
Isothermal process
Thermogravimetry
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Vaporization
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Propane
Fugacity
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Abstract : This report presents a computer program for the calculation of the adiabatic flame temperature and equilibrium chemical composition of constant pressure and constant volume systems. It is capable of treating either hydrocarbon or hydrogen fuels with either air or pure oxygen as the oxidizing agent. A solution procedure is presented which is fast, accurate and numerically stable. Analytical heat capacity equations are used to generate required thermodynamic data, thus avoiding the necessity of storing and interpolating lengthy data tables. The technique lends itself to the easy inclusion of additional chemical species which may be of interest under certain circumstances. The ideal gas assumption is used throughout the analysis.
Constant (computer programming)
Ideal gas
Computer program
Chemical equilibrium
Oxidizing agent
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Inert gas
Mass flux
Matrix (chemical analysis)
Inert
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTUnified Procedure for Solving Multiphase-Multicomponent Vapor-Liquid Equilibrium CalculationClaudio MauriCite this: Ind. Eng. Chem. Process Des. Dev. 1980, 19, 3, 482–489Publication Date (Print):July 1, 1980Publication History Published online1 May 2002Published inissue 1 July 1980https://pubs.acs.org/doi/10.1021/i260075a026https://doi.org/10.1021/i260075a026research-articleACS PublicationsRequest reuse permissionsArticle Views132Altmetric-Citations7LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access options Get e-Alerts
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Isothermal process
Isobaric process
Isothermal microcalorimetry
Sublimation
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A finite diffusion droplet evaporation model for complex liquid mixture composed of different homogeneous groups is presented in this paper. Separate distribution functions are used to describe the composition of each homogeneous group in the mixture. Only a few parameters are required to describe the mixture. Quasi-steady assumption is applied in the determination of evaporation rates and heat flux to the droplet, and the effects of surface regression, finite diffusion and preferential vaporization of the mixture are included in the liquid phase equations using an effective properties approach. A novel approach was used to reduce the transport equations for the liquid phase to a set of ordinary differential equations. The proposed model is capable in capturing the vaporization characteristics of complex liquid mixtures.
Vaporization
Liquid phase
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