Volume 2, Issue 6, November 2016, Page: 48-54
A New Simplified Model for Predicting of Water Content Effects on Thermal Conductivity of Hygroscopic Materials Buildings
André Talla, Department of Industrial and Mechanical Engineering, National Advanced School of Engineering, Yaounde, Cameroon
Received: Sep. 12, 2016;       Accepted: Oct. 28, 2016;       Published: Nov. 25, 2016
DOI: 10.11648/j.ajasr.20160206.13      View  3129      Downloads  42
Abstract
The aim of this paper was to predict the thermal conductivity of local composite materials, particularly used as building materials in Sub-Saharan countries, as a function of their water content. In this work, a new simplified model, based on a physical approach with assumption of an ideal shrinkage of the material during the evaporation of water, was built. Two composite materials were successfully tested providing good fitting and prediction results. Calculated and experimental values of thermal conductivity were in good agreement, with a maximum standard error of 0.037 Wm-1K-1 for the three hygroscopic materials. In spite of its simplicity, this model leads to a more accurate representation than other classical models of the measured variations of the thermal conductivity of hygroscopic materials with the water content.
Keywords
Hygroscopic Material, Water Content, Simplified Model, Thermal Conductivity, Porosity, Density
To cite this article
André Talla, A New Simplified Model for Predicting of Water Content Effects on Thermal Conductivity of Hygroscopic Materials Buildings, American Journal of Applied Scientific Research. Vol. 2, No. 6, 2016, pp. 48-54. doi: 10.11648/j.ajasr.20160206.13
Copyright
Copyright © 2016 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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