Experimental and Theoretical Investigation of Composit Materials as Thermal Insulation for Resident Building

Abstract

This work involves a theoretical and experimental investigation of three types of composite laminated materials as thermal insulations for roofs. The composite consists of three types of fiberglass with polyester resin. The first is; random fiberglass type-1, (density of 659.3 kg/m³). The second is random fiberglass type-2, (density of 731.8 kg/m³) and the last is matt fiberglass,( density 1010.5 kg/m³). The theoretical investigation involved a study of the solar radiation received by the walls and roof, heat gains reduction of roof for the three types of composite materials at different variables; these involved the (insulation thickness, number of layers of composite insulation, volume fraction, and the air gap between the roof and the insulation. The experimental investigation is divided into two parts: the first part included the measurement of thermal conductivity of composite materials using Lee's disc method with different volume fractions. The second part included the manufacturing of two rigs (reference rig and test rig) with dimensions (1m x 1m x 1m height). Theoretical results prove that the heat gain for the roof is more than that of the walls.