Daylight retrofitting for a school in Pune

Abstract

Daylighting is an optimal illumination of building using natural sunlight . The utilization of daylight can significantly affect building aesthetic , energy efficiency, as well as occupant’s comfort,productivity and health.Another purpose of day lighting is to save energy by reducing artificial lighting. In this study existing daylight pattern in school building is studied. Few retrofitting strategies like introduction of skylight, windows alteration and redesigning of the interior space are suggested to get the benefit of optimal daylight. Evaluation of daylighting after retrofitting is done by using Ecotect simulation .After retrofitting considerable increase in daylight performance is observed. Retrofitting suggested here also provides better ventilation with minimized energy consumption. However it should be noted that though retrofitting improves internal illuminance, surrounding structures limits the solar penetration .