In this article, we propose a study of heat transfer through a flexible pavement, the wearing course of which is composed of bitumen modified with sugar cane fibers (bagasse). The expressions for temperature and heat flux density are obtained from the heat equation established by Fourrier. The influence of extrinsic parameters such as the convective and radiative heat exchange coefficient on pavement deformations are presented in order to quantify the thermal behavior of the bituminous mixture under lighting and shade.
Composite wall consisting of three layers placed from outside to inside in concrete, plaster and plexiglass, is subject to external climatic constraints evolving in frequency dynamic regime. Goal is to maintain indoor environment at lower temperature for thermal comfort in homes or thermal insulation of cold rooms. By means of excitation pulsation, periods of external climatic stresses for which thermal insulation is effective for this wall system are determined.
New expressions of back surface recombination of excess minority carriers in the base of silicon solar are expressed dependent of both, the thickness and the diffusion coefficient which is in relationship with the doping rate.
Based on a dynamic frequency study, the thermal behavior of a wall consisting of a concrete slab contiguous to a panel of compressed rice straw is presented. The thermal behavior at the interface of the two materials is modeled by a thermal contact resistance. The insulating nature wall thus made is studied according the order magnitude of contact resistance: the perfect contact (Rc=0) extreme contact defects (Rc very high). The analysis of temperature and heat flow density curves show that the insulation effects are all the greater as the defects are important.
In this paper, we propose a method for determining the frequency band of study of a kenaf-based material in frequency modulation. The impacts of depth and heat exchange coefficients at the front and rear faces, are highlighted in the dynamic frequency regime.
The study of heat transfer under dynamic transient conditions established the tow-plaster material thermal resistance. We present a one-dimensional heat transfer study using a Tow-plaster material. We show the thermal resistance evolution of in the material subjected to climatic solicitation in transient dynamic regime. This is a one-dimensional, fully analytical modeling. This model allows us, on the one hand, to express the thermal resistance in the form of a sum of three resistances and thus to show the tow-plaster material relative thermal resistance. This study is highlighting in relation to the thermal behavior of the material by showing the influence of the coefficients of exchange.
In this study, we propose an evaluation method of the thermal inertia for two adjoining materials to one another from the heat capacity. The expression of the capacity has been deducted from the thermal-electrical analogy in dynamic frequency regime. The influences of the exciting pulse and depth in the concrete slab and in the tow-plaster on the heat capacity were presented.
In this paper, we propose a study of heat transfer through a roadway. The expression of the temperature and heat flux density are obtained from the resolution of the heat equation and the Fourier law in dynamic frequency regime. The influence of extrinsic parameters such as coefficients of convective and radiative heat exchange and cloud cover are presented.
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