Abstract
This paper describes a numerical model to study the behaviour of thermal comfort inside the passenger car compartment according to climatic conditions and materials that compose the vehicle. The specifically developed numerical model is based on the nodal method and the finite difference method. Its specificities are: (i) the transient mode, (ii) the taking into account of the combined convection, conduction and radiation heat transfer, (iii) the coupling of two spectral bands (short-wave and long-wave radiation) and two solar fluxes (beam and diffuse). The compartment is subdivided in several solid nodes (materials constituting the compartment) and fluid nodes (volumes of air inside the compartment). The establishment of the heat balance for each node gives the evolution of its temperature. Effects of solar radiation, types of glazing, car colour and radiative properties of materials constituting the compartment are investigated.
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