Analysis of adsorption kinetics on zeolites at non isothermal conditions and analysis of the kinetics curves

1981 ◽  
Vol 46 (3) ◽  
pp. 678-686 ◽  
Author(s):  
Arkadij Bezus ◽  
Arlette Zikánová ◽  
Miloš Smutek ◽  
Milan Kočiřík
Keyword(s):  
Heat Transfer ◽  
Adsorption Kinetics ◽  
Model Testing ◽  
Adsorption Kinetic ◽  
Transfer Coefficients ◽  
Kinetic Curves ◽  
Isothermal Conditions ◽  
Heat Transfer Coefficients ◽  
Mass And Heat Transfer

Adsorption kinetic curves were numerically simulated for the case of simultaneous mass and heat transfer. Proposed and discussed are different methods of model testing, experimental curves fitting and of evaluation of the diffusion and heat transfer coefficients from experimental kinetic curves.

scholarly journals Mass and Heat Transfer Coefficients in Automotive Exhaust Catalytic Converter Channels

Catalysts ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 507
Author(s):  
Chrysovalantis C. Templis ◽  
Nikos G. Papayannakos
Keyword(s):  
Heat Transfer ◽  
Flow Reactor ◽  
Catalytic Converter ◽  
Reaction Rates ◽  
Cfd Model ◽  
Automotive Exhaust ◽  
Transfer Coefficients ◽  
Heat Transfer Coefficients ◽  
Wide Range ◽  
Mass And Heat Transfer

Mass and heat transfer coefficients (MTC and HTC) in automotive exhaust catalytic monolith channels are estimated and correlated for a wide range of gas velocities and prevailing conditions of small up to real size converters. The coefficient estimation is based on a two dimensional computational fluid dynamic (2-D CFD) model developed in Comsol Multiphysics, taking into account catalytic rates of a real catalytic converter. The effect of channel size and reaction rates on mass and heat transfer coefficients and the applicability of the proposed correlations at different conditions are discussed. The correlations proposed predict very satisfactorily the mass and heat transfer coefficients calculated from the 2-D CFD model along the channel length. The use of a one dimensional (1-D) simplified model that couples a plug flow reactor (PFR) with mass transport and heat transport effects using the mass and heat transfer correlations of this study is proved to be appropriate for the simulation of the monolith channel operation.

Simultaneous estimation of the spacewise and timewise variations of mass and heat transfer coefficients in drying

2007 ◽  
Vol 15 (2) ◽  
pp. 137-150 ◽  
Author(s):  
Leonardo F. Saker ◽  
Helcio R. B. Orlande ◽  
Cheng-Hung Huang ◽  
Gligor H. Kanevce ◽  
Ljubica P. Kanevce
Keyword(s):  
Heat Transfer ◽  
Simultaneous Estimation ◽  
Transfer Coefficients ◽  
Heat Transfer Coefficients ◽  
Mass And Heat Transfer

Relation of the volumetric mass and heat transfer coefficients in a cooling tower

2018 ◽  
Vol 11 (53) ◽  
pp. 2613-2620
Author(s):  
Luis Obregon Quinones ◽  
Jorge Duarte Forero ◽  
Guillermo Valencia Ochoa
Keyword(s):  
Heat Transfer ◽  
Cooling Tower ◽  
Transfer Coefficients ◽  
Heat Transfer Coefficients ◽  
Mass And Heat Transfer
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