Lighting improvement for Food and Service Complex I, Khon Kaen University

Abstract

This paper investigated lighting problems and guidelines for improving lighting system performance for Food and Services Complex Iat Khon Kaen University.  The building is open for the university staff and students for 24-hours use. The building has four stories with a total area of 22,000 sq.m. The main function on the ground level is a parking lot. The first to third floors are canteen, dining areas and rental shops. The initial lighting survey was carried out and the resultsshowed inadequate lighting and an opportunity to improve lighting for the building. A study composes of two main parts: (1) a study on the exiting lighting conditions by a field survey study and a set of lighting simulations run by Dialux 4.13 program. Lighting under various lighting conditions: daylighting; artificial lighting; and mixed lighting were systematically examined; and (2) the mean illuminance values of zones on each floor were calculated and compared with lighting standards. Design improvements and lighting retrofit guidelines were then suggested. The results show that daylighting alone is enough to provide adequate amounts of light on each zone except some areas on the second floor. Moreover, rearranging luminaire controls to associate with daylight distribution is possible and will improve lighting system efficacy for the building. At night time, the illuminance levels are inadequate. Additional 114 lighting fixtures and lamp restorations will make the illuminance levels meet the standards quantitatively. The quality aspects could be addressed with these following subjects: improving lighting system equipment such as lamp and fixture; managing occupying time for the third floor to close at 19:00 - 7:00 hours to lessen energy use; and applying photovoltaic system on the south-side roof.  A set of 64- 300 watt solar panels are proposed to install for directly use in lighting fixtures on the ground floor and the first floor in the zones that require artificial lighting in total of 226 luminaires, and for use in 78-watt wall fans for 19 units for at least five hours during the daytime.