Extract

In India, there are around 14.6 million registered students in higher education. Over the past
years in India, the compounded annual growth rate (CAGR) has been observed 11% while student
enrolment CAGR was 6%. In the higher education institutes, design of lecture halls plays a significant
role. Daylighting is one of the critical aspects of designing a lecture hall because, in visually demanding activities, good daylight conditions are of utmost importance for the students. This study aims to assess the daylighting performance of lecture halls, including glare problems, lighting levels, and to minimise the energy consumption of artificial lighting by using occupancy sensors, photosensors and dimming control strategies. For this study, six lecture halls have been selected at NIT Trichy. The assessment approach has been based on software simulations using dynamic daylighting metrics such as useful daylight illuminance (UDI), daylight autonomy (DA), spatial daylight autonomy (sDA) and daylight glare probability (DGP). Simulation results show that the lecture halls lack daylight in the middle areas. No glare has been observed in any lecture hall. Dimming control strategy helps in energy savings and reduces the artificial lighting consumption up to 61.86% on average.

Keywords: Lecture Halls; Daylighting Performance; Dynamic Daylight Metrics; Energy Savings

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