Heat Transfer for Slab-on-Grade Floors With Prescribed Heat Flux

[+] Author and Article Information
S. Choi, M. Krarti

Joint Center for Energy Management, CEAE Department, University of Colorado, Boulder, CO 80309-0428

J. Sol. Energy Eng 119(4), 273-278 (Nov 01, 1997) (6 pages) doi:10.1115/1.2888032 History: Received September 01, 1996; Revised November 01, 1996; Online February 14, 2008


The general solution of soil temperature distribution is developed for a slab-on-grade floor with a known heat flux distribution at the slab surface. The Interzone Temperature Profile Estimation (ITPE) technique is applied to determine the steady-state variation of temperature within the ground. A water table at constant temperature is assumed to exist at a given depth below the soil surface. As a first application of the general solution, the optimum thermal insulation distribution is obtained for a slabon-grade floor. A second application of the solution developed in this paper consists of a diagnostic method to determine the configuration and the R-value for the thermal insulation of the slabon-grade floor based on measured data for the heat flux at the slab surface. A parametric analysis is conducted to determine the effects of heat flux profiles and water table depths on the required insulation distribution at the slab surface.

Copyright © 1997 by The American Society of Mechanical Engineers
Topics: Heat , Heat transfer , Slabs
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