Project report day lighting performance of the light shelf

Abstract

This report is a presentation on day lighting performance of a Light shelf as passive design solution to day lighting within a set of parameters. The objective of this report is to provide data that will help in making important decisions with regard to optimum use oflight shelf as day lighting device. This project report provides a stepping-stone for other researchers to explore other parameters that affect the light shelf s performance as only the basic parameters have been explored in this project. The light shelf s performance in this report is analyzed in two parts; the first part focuses on the light shelf and its relation to the Sun and the second part focuses on the physical aspects of the light shelf itself. The relationship between the Sun and the light shelf is studied using a Solar chart and the Sun path simulator, while an Overcast simulator, also . known as a mirror box, is used to study the physical properties of the light shelf. A two dimensional representation of the light shelf was used with a Solar chart and scaled models were used in the experiments carried out inside the Sun path and Over cast simulators. The observations and t1!econsequent results are presented inform of tables, graphs and ~ -- !/' ••••• ...~~- ::-:-' . figures depending on whether qualitative or quantitative are desired. The results of each experiment are discussed in detail with reference to the questions raised in the problem statement. Based on the discussion carried out on the results obtained from the three experiments, a list of summary and conclusions is drawn up in the end.