Results 11 to 20 of about 170,570 (262)

Experimental Investigation of Two-Phase Flow Boiling Heat Transfer Coefficient and Pressure Drop of R448A inside Multiport Mini-Channel Tube

open access: yesEnergies, 2022
Regulations and restrictions against high global warming potential (GWP) refrigerants have been introduced to encourage the adoption of environmentally friendly refrigerants and mitigate the environmental impact of the HVAC industry.
Hieu Ngoc Hoang   +2 more
doaj   +1 more source

Influence of counterdiffusion effects on mass transfer coefficients in stirred tank reactors

open access: yesChemical Engineering Journal Advances, 2021
Accurate knowledge of volumetric oxygen mass transfer coefficients in multiphase systems is important for successfully designing and efficient operation of process plants.
S. Matthes   +4 more
doaj   +1 more source

Numerical study of the hydrodynamics and mass transfer in the external loop airlift reactor [PDF]

open access: yesChemical Industry and Chemical Engineering Quarterly, 2022
The objective of this study was to investigate the hydrodynamics and the gas-liquid mass transfer coefficient of an external-loop airlift reactor (ELAR).
Kojić Predrag   +5 more
doaj   +1 more source

Triethylene Glycol Dehydration of Natural Gas: Evaluation of Mass and Heat Transfer Coefficients in the Case of Absorption and Stripping Structured Packing Towers [PDF]

open access: yesChemical and Biochemical Engineering Quarterly, 2022
In the last decades, due to their hydraulic performances, structured packings have become the main internals in TEG dehydration units. However, the available literature correlations for the evaluation of mass and heat transfer coefficients were found ...
A. D. Filep, T. Todinca, G. Dumitrel
doaj   +1 more source

Mass Transfer Coefficient of Ozone in a Bubble Column

open access: yesMATEC Web of Conferences, 2018
The effect of flow rate of ozone-containing gas and pH on the mass transfer coefficient of ozone through water in a bubble column reactor has been studied. Ozone was generated from air using a corona discharge ozone generator.
Ratnawati Ratnawati   +3 more
doaj   +1 more source

Effect of surfactants on liquid-side mass transfer coefficients [PDF]

open access: yesChemical Engineering Science, 2005
In the present paper, the effect of liquid properties (surfactants) on bubble generation phenomenon, interfacial area and liquid side mass transfer coefficient was investigated. The measurements of surface tension (static and dynamic methods), of Critical Micelle Concentration (CMC) and of characteristic adsorption parameters such as the surface ...
Painmanakul, Pisut   +4 more
openaire   +4 more sources

Estimation of Volumetric Mass Transfer Coefficient in Bioreactor

open access: yesAl-Khawarizmi Engineering Journal, 2012
This study is concentrated to investigate the effects of aeration and stirring speed on the volumetric mass transfer coefficient (KLa). A dynamic technique was used in estimating KLa values in order to achieve the aim of this study.This study was done in
Zainab Yaquob Atiya
doaj   +2 more sources

Evaluation of material properties determining the moisture transfer

open access: yesEPJ Web of Conferences, 2013
Due to solution the problems of moisture transfer is necessary to deal with two mechanisms of transfer: the molecular mass transfer and mass transfer by convection.
Vestfálova M.
doaj   +1 more source

Study of New Mini-Channel Trans-Critical CO2 Heat Pump Gas Cooler

open access: yesMicromachines, 2022
A gas cooler is one of the important parts of a carbon dioxide (CO2) heat pump water heater, and it must meet the needs of not only pressurization but also heat transfer. It is important to study gas coolers. In this paper, a heat exchanger with a spiral
Jiawei Jiang   +4 more
doaj   +1 more source

Curvature dependence of the interfacial heat and mass transfer coefficients [PDF]

open access: yesThe Journal of Chemical Physics, 2014
Nucleation is often accompanied by heat transfer between the surroundings and a nucleus of a new phase. The interface between two phases gives an additional resistance to this transfer. For small nuclei the interfacial curvature is high, which affects not only equilibrium quantities such as surface tension, but also the transport properties.
Glavatskiy, K. S., Bedeaux, D.
openaire   +3 more sources

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