Abstract
The aim of this study is to assess five daylighting calculation method commonly used in architectural study. The methods used include hand calculation methods (SNI/DPMB method and BRE Daylighting Protractors), scale models studied in an artificial sky simulator and computer programs using Dialux and Velux lighting software. The test room is conditioned by the uniform sky conditions, simple room geometry with variations of the room reflectance (black, grey, and white color). The analyses compared the result (including daylight factor, illumination, and coefficient of uniformity value) and examines the similarity and contrast the result different. The color variations trial is used to analyses the internally reflection factor contribution to the result.
Highlights
Daylighting has a great potential to do energy saving in buildings
Daylighting calculation is becoming the valuable need for the designer to optimize its potential in architectural design
The Sky Component (SC) / daylight factor (DF) maximum and DF average values by the SNI method are close to the computer simulation results
Summary
Daylighting calculation is becoming the valuable need for the designer to optimize its potential in architectural design. A designer has many options in using the daylighting calculation methods. Hand-calculation method with graphics and diagrams still used because of its versatility in use. A scale model simulation still remains to become one of the choice because it is a familiar method used in architectural design and provides a representative object for presentation media. The emergence of a variety of specialized software for lighting (daylight and artificial light) allows designers to have a more complete and complex analysis of the lighting condition through a digital simulation. A wide choice of these calculation methods helps designers to choose the method that suits the design needs
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