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2013 (Vol. 5, Issue: 06)
Article Information:

Study of Heat Transfer in a Kapok Material from the Convective Heat Transfer Coefficient and the Excitation Pulse of Solicitations External Climatic

M. Dieng, I. Diagne, B. Fleur, A. Kane, M.L. Sow and G. Sissoko
Corresponding Author:  G. Sissoko 

Key words:  Dynamic frequency regime, heat exchange coefficient, kapok, thermal impedance, thermal insulation , ,
Vol. 5 , (06): 1959-1962
Submitted Accepted Published
July 09, 2012 August 08, 2012 February 21, 2013
Abstract:

The aim of this study is to characterize thermal insulating local material, kapok, from a study in 3 dimensions in Cartesian coordinate and in dynamic frequency regime. From a study a 3 dimensional the heat transfer through a material made of wool kapok (thermal conductivity: &lambda = 0,035 W/m/K; density: &rho = 12, 35 kg/m3; thermal diffusivity: &alpha = 17, 1.10-7 m2 /s) is presented. The evolution curves of temperature versus convective heat transfer coefficient have helped highlight the importance of pulse excitation and the depth in the material. The thermal impedance is studied from representations of Nyquist and Bode diagrams allowing characterizing the thermal behavior from thermistors. The evolution of the thermal impedance with the thermal capacity of the material is presented.
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  Cite this Reference:
M. Dieng, I. Diagne, B. Fleur, A. Kane, M.L. Sow and G. Sissoko, 2013. Study of Heat Transfer in a Kapok Material from the Convective Heat Transfer Coefficient and the Excitation Pulse of Solicitations External Climatic.  Research Journal of Applied Sciences, Engineering and Technology, 5(06): 1959-1962.
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ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
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