Release of volatiles from pyrolyzing coal particles: relative roles of kinetics, heat transfer, and diffusion

1988 ◽  
Vol 2 (4) ◽  
pp. 371-385 ◽  
Author(s):  
Mahendra K. Misra ◽  
Robert H. Essenhigh
Keyword(s):  
Heat Transfer ◽  
Coal Particles ◽  
And Diffusion

Heat Transfer in a Fluidized Bed of Wet Brown Coal Particles

2015 ◽  
Vol 41 (2) ◽  
pp. 140-147 ◽  
Author(s):  
Kenichi Arima ◽  
Norihiro Fukuda ◽  
Ryuhei Takashima ◽  
Norito Katsuki ◽  
Tetsuya Sawatsubashi ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Fluidized Bed ◽  
Brown Coal ◽  
Coal Particles

Heat Transfer and Diffusion

2018 ◽  
pp. 39-48
Author(s):  
Joseph W. Freeman ◽  
Debabrata Banerjee
Keyword(s):  
Heat Transfer ◽  
And Diffusion

scholarly journals Rayleigh wave propagation in transversely isotropic magneto-thermoelastic medium with three-phase-lag heat transfer and diffusion

2019 ◽  
Vol 14 (1) ◽  
Author(s):  
Iqbal Kaur ◽  
Parveen Lata
Keyword(s):  
Heat Transfer ◽  
Rayleigh Wave ◽  
Homogeneous Medium ◽  
Transversely Isotropic ◽  
Phase Lag ◽  
Attenuation Coefficients ◽  
Three Phase ◽  
Stress Components ◽  
And Diffusion ◽  
Penetration Depths

Abstract The present research deals with the propagation of Rayleigh wave in transversely isotropic magneto-thermoelastic homogeneous medium in the presence of mass diffusion and three-phase-lag heat transfer. The wave characteristics such as phase velocity, attenuation coefficients, specific loss, and penetration depths are computed numerically and depicted graphically. The normal stress, tangential stress components, temperature change, and mass concentration are computed and drawn graphically. The effects of three-phase-lag heat transfer, GN type-III, and LS theory of heat transfer are depicted on the various quantities. Some particular cases are also deduced from the present investigation.

Predictions of Radionuclide Migration Rates for a Subseabed Repository

1981 ◽  
Vol 6 ◽  
Author(s):  
L. H. Brush
Keyword(s):  
Heat Transfer ◽  
Deep Sea ◽  
Fission Products ◽  
Radionuclide Migration ◽  
Migration Rates ◽  
Field Verification ◽  
Anionic Species ◽  
And Diffusion ◽  
Temperature Interactions ◽  
The U.S

ABSTRACTGeochemical research carried out by the U.S. Subseabed Disposal Program is described. Data from studies of high temperature interactions between sediments and porewater (seawater), and of sorption and diffusion of radionuclides in oxidized, deep-sea sediments are used, along with results from heat transfer studies, to predict migration rates of radionuclides in a subseabed repository.Preliminary results for most radionuclides in oxidized sediments are very encouraging: fission products with moderate values of KD (generally 10 to 10 ml/g), and actinides with high values of KD (generally 103 to 106 ml/g) would not migrate significant distances before decaying to innocous concentrations. 137Cs, 90Sr, and 239Pu are among this group. The results for anionic species are less encouraging, but preliminary work with reduced sediments indicates that Tc can be effectively isolated.Planning for a field verification of these laboratory and modeling studies is also described.

Heat transfer and diffusion in fixed beds

1971 ◽  
Vol 26 (5) ◽  
pp. 585-604 ◽  
Author(s):  
O.A. Asbjørnsen ◽  
B. Wang
Keyword(s):  
Heat Transfer ◽  
Fixed Beds ◽  
And Diffusion
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