DETERMINING THE EFFECTIVENESS OF INSULATION LAYERS ON EXTERNAL WALLS BY TRANSIENT THERMAL ANALYSIS

In India we have about 300 clear or sunny days, So In order to achieve comfort conditions in residence and offices the building sector alone represents about 35% energy consumption. In this study the usage of composite exterior walls to reduce the energy demand of the building has been evaluating. Reducing the heat load of the structure allows for the installation of a smaller heating and cooling system thus electricity is consumed by the air conditioning system during summer days can be reduce to a large extend. Cooling of interiors can be achieved by use of centralized air conditioner, ceiling fans, evaporative cooling systems for dry climates, dehumidification systems, heat pump systems etc, but this method are costly and also consumes energy so in this study we aim to design an exterior wall with proper insulation or by using composite wall technique. This study evaluates the increase in thermal efficiency of outer wall using layered wall concept with different thermal insulation materials. The study aims around 20% decrease in thermal conductivity from the conventional design using bricks and cement thus the energy consumptions can be reduced. Design of exterior walls shall be done based on a numerical study using ANSYS Workbench 2022 R2. The thermal efficiency of exterior wall shall be compared with different insulation materials like PU Foam, Fiber glass, Gypsum and Mineral Wool. Comparison shall be made with different ambient temperature conditions. An Optimized design will be proposed at the final stage of study with respect to the efficiency of layered wall with different insulation materials. This study is concerning about increase in energy consumption, material and resources. By adopting techniques like layered walls as insulation for exterior wall will save energy, resources as well environment health.