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Experimental and Numerical Study of Particle Heating Using DC Discharge Open Access


Other title
Joule heating
Homogeneous chemical reactions
Fixed bed
Heterogeneous chemical reactions
Heat storage
Particle heating
Type of item
Degree grantor
University of Alberta
Author or creator
Ajuwon, Olawale
Supervisor and department
Nikrityuk, Petr (Chemical and Materials Engineering)
Gupta, Rajender (Chemical and Materials Engineering)
Examining committee member and department
Gupta, Rajender (Chemical and Materials Engineering)
Chung, Hyun-Joong (Chemical and Materials Engineering)
Hayes, Robert E (Chemical and Materials Engineering)
Nikrityuk, Petr (Chemical and Materials Engineering)
Department of Chemical and Materials Engineering
Chemical Engineering
Date accepted
Graduation date
Master of Science
Degree level
The main aim of this work is experimental and numerical study of heat and mass transfer in fixed beds by the Joule heating effect, which is a volume-based type of heating rather than surface-based. This is aimed at looking more into energy storage technologies where electrical energy is stored as chemical energy i.e. Energy to Chemicals (E2C) concept. Experiments were carried out for fixed bed heating with and without gas flowing through the bed and temperature measurements with time were taken at the center and outlet of the bed for solid and gas temperatures respectively. The experiments were carried out with 15 W, 22.5 W and 42 W powers and also with four mass flow rates ranging from 1.27 ×10−7 to 6.13 ×10−7 kg/s. The experimental results were then validated against numerical and computational fluid dynamics (CFD) models. It was observed that since the bed was not insulated, heat was lost at the wall and also that the gas temperature increases at the outlet with mass flow rate. This was attributed to the fact that for lower mass flow rates, the gas tends to moves along the wall from the inlet to the outlet of the bed. Based on this knowledge of heat and mass transfer in fixed beds with electrical heating, a preliminary study of energy storage, in particular, steam reforming of methane, was then carried out.
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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