RESEARCH PAPERS: Heat Conduction

Heat Transfer Within a Steel-Reinforced Porous Concrete Slab Subjected to Microwave Heating

[+] Author and Article Information
W. Li, M. A. Ebadian

Department of Mechanical Engineering, Florida International University, Miami, FL 33199

T. L. White

Fusion Energy Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831

D. Foster

Chemical Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831

J. Heat Transfer 117(3), 582-589 (Aug 01, 1995) (8 pages) doi:10.1115/1.2822617 History: Received January 01, 1994; Revised November 01, 1994; Online December 05, 2007


The concrete decontamination and decommissioning (D&D) process using microwave technology is investigated theoretically in this paper. A one-dimensional uniform plane wave is assumed for the microwave propagation and the microwave field and the power dissipation within the concrete. Also, by considering the effects of the microwave frequencies, a one-dimensional model of unsteady heat and mass transport in the concrete is developed to evaluate variations of the temperature and pressure distributions with the heating time. The effects of the microwave frequency (f), microwave power intensity (Qo,avg ), the thermal boundary conditions on the front wall, and the concrete porosity (Φ) on the microwave power dissipation (Qd,avg ), temperature (T), pressure (P), and evaporation rate (Δm) distributions are all investigated in the present model. Finally, the effects of the presence of a steel reinforcement and its location on the microwave power dissipation, and the temperature and inner steam pressure distributions are discussed accordingly.

Copyright © 1995 by The American Society of Mechanical Engineers
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