Journal ArticleDOI
Modelling of direct-contact evaporation using a simultaneous heat and multicomponent mass-transfer model for superheated bubbles
TLDR
In this paper, a model for coupled heat and mass transfer in binary systems during the formation and ascension of superheated bubbles was extended to a multicomponent system comprising N volatile species.About:
This article is published in Chemical Engineering Science.The article was published on 2005-03-01. It has received 10 citations till now. The article focuses on the topics: Mass transfer & Heat transfer.read more
Citations
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Journal ArticleDOI
Gas‐Liquid Direct‐Contact Evaporation: A Review
TL;DR: In this paper, a review of the literature regarding gas-liquid direct contact evaporators is presented, addressing classic and potential applications, bubble regimes, gas holdup and bubble size distributions, as well as mathematical models proposed for simulating the unit.
Journal ArticleDOI
On the effect of liquid temperature upon bubble coalescence
Cláudio P. Ribeiro,Dieter Mewes +1 more
TL;DR: In this paper, a quantitative criterion was developed to compute the critical velocity for bubble coalescence based on the relative velocities and the outcome (coalescence or bouncing) of the recorded collisions.
Journal ArticleDOI
Turbulent conjugate heat and mass transfer from the surface of a binary mixture of ethanol/iso-octane in a countercurrent stratified two-phase flow system
TL;DR: In this paper, a numerical study has been performed to determine evaporation rate from the surface of ethanol/iso-octane in an inclined 2D channel, where liquid and gas phases are flowing in counter-current direction.
Journal ArticleDOI
Analysis of breakage and coalescence models for bubble columns
TL;DR: In this article, the performance of bubble breakage and coalescence models in bubble column simulations was evaluated using experimental data of bubble size distributions for the air-water system in an isothermal bubble column.
Journal ArticleDOI
Purification of Bioethanol Using Microbubbles Generated by Fluidic Oscillation: A Dynamical Evaporation Model
Nada N. Abdulrazzaq,Nada N. Abdulrazzaq,Baseem H. Al-Sabbagh,Baseem H. Al-Sabbagh,Julia M. Rees,William B. Zimmerman +5 more
TL;DR: In this paper, a computational model of a single gas microbubble immersed in a liquid of ethanol-water mixture is developed and solved numerically, which complements earlier binary distillation experiments in which the ethanol mixture is stripped by hot air microbubbles achieving around 98% vol. ethanol from the azeotropic mixture.
References
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Journal ArticleDOI
Non-ideal vaporization of dilating binary droplets with variable properties
TL;DR: In this article, a diffusive liquid vaporization model for multicomponent droplets has been developed, which includes spatially and time dependent density, the interdiffusion term in the energy equation, variable properties, and non-ideal phase equilibrium.
ReportDOI
The flow of liquid-gas mixtures in vertical tubes
TL;DR: In this article, the characteristics of liquid-gas mixtures in large pumps and vertical tube boilers are explained by resolving the velocity with which bubbles move through the tube into its two components.
Journal ArticleDOI
Bubble formation and heat transfer during dispersion of superheated steam in saturated water—I: Bubble size and bubble detachment at single orifices
TL;DR: In this article, the authors investigated the effects of single orifices on the formation and detachment of a single bubble at high system pressures and temperatures in a steam-water system.
Journal ArticleDOI
Heat Transfer between Bubbles and Liquid during Cold Gas Injection
TL;DR: In this article, the authors investigated the mechanism of heat transfer between bubbles and liquid and the effect of heat transferred on the formation of bubbles and the rising characteristics of the bubbles in a water model.
Journal ArticleDOI
Bestimmung von Wärme- und Stoffübergangszahlen zwischen Dampfblase und Flüssigkeit für Wasser gegen Wasserdampf sowie Wasser gegen Wasserdampf und Inertgas: Bestimmung von Wärme- und Stoffübergangszahlen zwischen Dampfblase und Flüssigkeit für Wasser gegen Wasserdampf sowie Wasser gegen Wasserdampf und Ine
P. Grassmann,E. Wyss +1 more
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