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.
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.
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.
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