Research Article | OPEN ACCESS
Changes in Temperature in a Material Kapok-plaster Sample in Dynamic Frequential Regime
1Makinta Boukar, 2Mamadou Babacar Ndiaye, 3Alassane Diene, 3Paul Demba, 1Issa Diagne, 1Mohamed Sidya Ould Brahim and 1Gregoire Sissoko
1Department of Physics, Laboratory of Semiconductors and Solar Energy, Faculty of Science and Technology, University Cheikh Anta Diop, Dakar, Senegal
2UIT, University of Thies, Senegal
3Polytechnic School, Thies, Senegal
Research Journal of Applied Sciences, Engineering and Technology 2014 20:2135-2140
Received: August ‎01, ‎2014 | Accepted: October ‎22, ‎2014 | Published: November 25, 2014
Abstract
We propose in this study, changes in temperature in a kapok-plaster material, depending on the depth, in dynamic frequential regime. The temperature changes are studied for different values of the temperature exciter frequency and the coefficient of convective heat exchange at the front face of the sample. The studies have helped to assess the length of the effective heat insulating layer and to demonstrate the dependence of the quantity of heat exchanged in the material relative to the exciter frequency. The curves show the existence of a frequency below which there is reversal of the effect of the frequency and they show also the existence of a limit value for the temperature when the exchange coefficient on the front face of the sample exceeds the value of 100 W/m2/°C.
Keywords:
Coefficient of convective heat exchange, dynamic frequential regime, exciter frequency, temperature,
References
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Ould Brahim, M.S., I. Diagne, S. Tamba, F. Niang and G. Sissoko, 2011. Characterization of the minimum effective layer of thermal insulation material tow-plaster from the method of thermal impedance. Res. J. Appl. Sci. Eng. Technol., 3(4): 337-343.
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Competing interests
The authors have no competing interests.
Open Access Policy
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Copyright
The authors have no competing interests.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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