OPTIMIZATION OF WINDOW DESIGN IN A HIGH-RISE RESIDENTIAL TOWNSHIP TO ACHIEVE GRIHA REQUIREMENTS FOR THERMAL AND VISUAL COMFORT

Kiriti Sahoo, D E V S Kiran Kumar, Minni Sastry

Abstract: Window design becomes critical in achieving thermal and visual comfort for buildings located in Warm–Humid climate. The paper presents the process of window design for a high-rise and dense development using software simulation tools in order to comply for GRIHA green building rating system. The impact of solar radiation and predominant wind direction on location of openings and design of external shading device are highlighted. Typical facades have been identified in order to analyses the solar insolation and to suggest the glazing requirements. Detailed and floor wise analysis is carried out for daylight and shading availability in each cluster of the apartments using dynamic simulation tools. Outdoor and indoor wind flow analysis is done using Computational Fluid Dynamics (CFD) tool of Integrated Environmental Solutions (IES-VE). Further, optimization of window design in order to achieve better air circulation and daylight requirements of GRIHA green building certification is presented. It was observed that the facades on different orientations require different treatment for shading windows and for ventilating the rooms. The research also showcases a special type of window design as a combined strategy to enhance natural ventilation and glare free daylight inside the living spaces.

Keywords: Shading, Day lighting, High Rise, Dense Development, Wind Flow, DF(daylight factor)

DOI: https://doi.org/10.15623/ijret.2016.0532016