Analysis of Anidolic daylighting system parameters in tropical climate

Abstract

Utilizing available daylight in buildings is a crucial issue for reasons of energy-efficiency as well as improvement of occupant's health and well-being. Anidolic Daylighting System (ADS) is a type of daylighting system that provides daylight in areas far from windows. This device concentrates daylight in a collector and transfers it to duct situated between collector and distributor, which then spreads this daylight to the inside of the building. The aim of this research is to determine optimum Anidolic duct shape and width which increases daylight illuminance into the interior of office buildings. The simulation model was designed in Integrated Environmental Solution IES<VE> software to perform daylight simulation experiments. Therefore, three configurations of designed duct shape with two duct lengths (12 and 20 meters) were simulated as duct shape variables. Three different duct width sizes were also evaluated. Results indicated that a rectangular shaped Anidolic with three meter duct width offers higher illuminance than the other simulated cases. For future study, other parameters can be carried out such as depth of duct, size of anidolic, collector and distributor of device