Title page for ETD etd-121698-145749


Type of Document Master's Thesis
Author Faucher, Florent Patrice
Author's Email Address ffaucher@vt.edu
URN etd-121698-145749
Title A Numerical Model of a Microwave Heated Fluidized Bed
Degree Master of Science
Department Mechanical Engineering
Advisory Committee
Advisor Name Title
Thomas, James R. Jr. Committee Chair
Davis, Willam A. Committee Member
Stern, Curtis H. Committee Member
Keywords
  • Microwave
  • Fluidization
  • Heat transfer
  • Catalyst
Date of Defense 1998-12-10
Availability unrestricted
Abstract
This proposes a model for a microwave heated fluidized

bed by ceramic pellets to highlight the possibility

to obtain a temperature gradient between the gas and

the pellets. After a review of the recent work on

microwave effects on chemical reactions, a short

description of fluidization is given for a better

understanding of the phenomena, followed by a

development of a model of the heat transfer

processes taking place in the fluidized bed. A

parameter study describes the trends that should be

expected despite the numerous restrictions and

assumptions. Also, a set of parameters is proposed

for optimal conditions that are close to the real

conditions often encountered in practice. Numerous

figures and tables are added, completing the main

argument advanced in the thesis: it is possible to

obtain a temperature difference between the gas

and the pellets of a chemical bed reactor heated by

microwaves by carefully choosing the following

parameters: pellet diameter, bed height, gas

velocity, pellet density and electric field.

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