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Numerical Heat Transfer, Part A: Applications
An International Journal of Computation and Methodology
Volume 67, 2015 - Issue 1
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Original Articles

In-Situ Thermal Resistance Evaluation of Walls Using an Iterative Dynamic Model

, , , &
Pages 33-51 | Received 22 Aug 2013, Accepted 30 Jan 2014, Published online: 20 Oct 2014
 

Abstract

This paper proposes and validates, numerically and experimentally, an iterative model to evaluate the thermal resistance of multilayer walls in a dynamic state.

The paper first presents the analytical solution for simulating heat conduction in the frequency domain. The model is then modified by assuming a single-layer wall with unknown thermal properties. A nonlinear system is obtained by imposing temperatures and fluxes on the external surfaces. This is solved using an iterative approach based on the Newton–Raphson method. Finally, the model is applied to evaluate the thermal resistance of a wall in real conditions.

Notes

Color versions of one or more of the figures in the article can be found online at www.tandfonline.com/unht.

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