A comparative study on effects of various insulating layers of roof system on energy usage of building envelope

Abstract

The purpose of paper is to analyse the effectiveness of various roof systems based on insulations layers in hot climatic condition of Hyderabad, India. In this paper, Energy analysis using Autodesk's Green Building Studio cloud computing software has been done. The Energy analysis results gives indication about the Energy usage of building as well as overall life cycle costing. The roof system has been studied with their carbon emission and Embodied Energy to understand the sustainability aspect of the insulating layers in combination to provide a green roof system. The materials used for studying the insulating effects of roof system which were analysed in combinations were cork, gypsum board, expanded polystyrene, rock wool, fibre glass, PVC mesh, Polyurethane, etc. Due to the insulating layers the heat transfer is reduced through the roof system, which affects the cooling load of building envelope which reduces the energy consumption. The study is significant to understand the occupant's indoor comfort, environmental and long-term economic benefits of insulation for a building envelope.