Results 251 to 260 of about 6,144,611 (296)

Mass transfer coefficients on truncated slabs

Chemical Engineering Science, 1969
Abstract Local and average mass transfer coefficients on a sharp-edged plate and on truncated slabs of various thicknesses were obtained experimentally. The results show that the mass transfer coefficients do not only depend on the air velocity and the distance from the leading edge, but that the thickness of the slabs is also of significance.
openaire   +1 more source

Film Mass Transfer Coefficient Expressions for Electroosmotic Flows

Journal of Colloid and Interface Science, 2000
Expressions are developed and presented that could be used to determine the film mass transfer coefficient of a solute in electroosmotic flows. In contrast to pressure-driven flows at low Reynolds numbers where the film mass transfer coefficient is independent of the linear characteristic dimension of the channel for flow, in electroosmotically driven ...
, Liapis, , Grimes
openaire   +2 more sources

SURFACE MASS TRANSFER COEFFICIENTS FOR WOOD

Drying Technology, 1993
ABSTRACT Experimentally determined mass transfer coefficients for wood surfaces are often much lower than theoretically and experimentally determined coefficients for other surfaces. An investigation of this is made by comparing mass transfer coefficients for water and saturated non-wood surfaces, with coefficients measured for wood surfaces.
openaire   +1 more source

Mass transfer coefficients in fluidized systems

Chemistry and Technology of Fuels and Oils, 1967
1. During the adsorption of nitrogen oxides by the ASM grade silica gel, the increase in relative saturation is accompanied by a rapid fall in the total mass transfer coefficient caused by the increased diffusion resistance of the adsorbate in the pores of the adsorbent. 2.
openaire   +1 more source

Intercomparisons of Experimental Convective Heat Transfer Coefficients and Mass Transfer Coefficients of Urban Surfaces

Boundary-Layer Meteorology, 2005
The convective heat transfer coefficient (CHTC) of an urban canopy is a crucial parameter for estimating the turbulent heat flux in an urban area. We compared recent experimental research on the CHTC and the mass transfer coefficient (MTC) of urban surfaces in the field and in wind tunnels. Our findings are summarised as follows.
Aya Hagishima, Jun Tanimoto, Ken-ich Narita   +2 more
openaire   +1 more source

Mass transfer in cocurrent gas-liquid flow: Gas side mass transfer coefficients in upflow, interfacial areas and mass transfer coefficient in gas and liquid in downflow

Chemical Engineering Science, 1978
Abstract A comparison of the values of interfacial area in cocurrent downward flow of gas and liquid with those obtained in upward flow revealed very little difference. Volumetric as well as true liquid side mass transfer coefficients in downflow were found to be several times lower than in upflow. Only in the smallest 10 mm tube a dependence of the
R.V. Shilimkan, J.B. Stepanek
openaire   +1 more source

Physical significance of the mass transfer coefficient

The Chemical Engineering Journal, 1987
Le coefficient de transfert de matiere represente la vitesse maximale, par rapport au melange, avec laquelle un composant peut etre transfere. Le coefficient de transfert de matiere n'a pas seulement les dimensions de la vitesse, mais aussi la meme signification ...
openaire   +1 more source

Determination of mass transfer coefficient for condensation simulation

International Journal of Heat and Mass Transfer, 2019
Abstract Mass transfer calculation through vapor-liquid interface is the most important key issue for condensation simulation. However, it is a challenge to determine the coefficient of mass transfer model and the uncertain coefficient leads to unclear physics of the calculated results.
Yuan Tang, Shao-long Zhu, Li-min Qiu
openaire   +1 more source

Determination of mass-transfer coefficients during rectification

Chemistry and Technology of Fuels and Oils, 1970
A method has been proposed for analyzing the resistances of the phases in the rectification of binary mixtures; the method can be used under the conditions of a straight-line equilibrium dependence. The method has been verified in the rectification of dilute mixtures.
G. Ya. Rudov, O. S. Chekhov, Yu. V. Tetivkin   +2 more
openaire   +1 more source

Calculation of Photon Mass Energy-Transfer and Mass Energy-Absorption Coefficients

Radiation Research, 1993
Calculations of mass energy-transfer and mass energy-absorption coefficients for photon energies from 1 keV to 100 MeV have been developed, based on a re-examination of the processes involved after the initial photon interaction. The probabilities for the initial interaction are from the current photon interaction cross-section database at the National
openaire   +2 more sources