OPTIMIZATION OF DAYLIGHTING USING LIGHT-PIPE DEVICE IN THE DESIGN OF ACADEMIC LIBRARY FOR SUMMIT UNIVERSITY, OFFA
OPTIMIZATION OF DAYLIGHTING USING LIGHT-PIPE DEVICE IN THE DESIGN OF ACADEMIC LIBRARY FOR SUMMIT UNIVERSITY, OFFA
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Date
2020-02
Authors
ADEGBOYE, Abdulbasit
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Abstract
Daylighting is a copious natural source of light from the Sun. It propagates through the
walls or roof apertures into the building for visual task in architectural space. In tropical
regions such as Nigeria where there is abundance in sunlight with massive untapped
potential, several strategies to admit daylight are set in place which in-turn blocks the
daylight penetration. Consequently, it affects the minimum standard daylight
requirement for visual comfort in the conventional reading areas of the library which
are usually deeply planned. Therefore, the research examines light-pipe device
configuration for optimum daylighting and illuminance in the design of conventional
reading areas of academic library, in tropical wet-dry climatic zone of Nigeria. The
study uses case study and quasi experimental approach to test for daylight performance
of light pipe. Moreover, literature review helps establishing the standard minimum
amount of daylight requirement together with the base model area in conventional
reading area of academic library, while local case study reveals the headroom for the
base model. The test for efficiency of light pipes in a base model box (3m x 3m x 3.3m)
was modelled and exported from Revit®to Ecotect® Radiance® Daysim® and the
illumination received in the box was tested. The simulation test for effect of both
diameter and length of light pipe, shows that light pipe with aspect ratio of 1/2 give
optimum performance for daylight requirement in conventional reading area within wet
and dry tropical climate of Nigeria. Daylight Autonomy of 78%was achieved; 18%
addition compare to 60% minimum standard Daylight Autonomy established from
literatures and Useful daylight illuminance of 98%. This indicates that if attention is
paid to aspect ratio as parameters during the design of a Library conventional reading
area, it would go a long way in ensuring that visual comfort for the users. It
recommended that the aspect ratio 1/2 should adhered to as it aids in visual comfort and
reducing energy consumption.
Description
A THESIS SUBMITTED TO THE SCHOOL OF POSTGRADUATE STUDIES,
AHMADU BELLO UNIVERSITY, ZARIA
IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE AWARD
OF MASTER OF SCIENCE DEGREE IN ARCHITECTURE
DEPARTMENT OF ARCHITECTURE,
FACULTY OF ENVIRONMENTAL DESIGN,
AHMADU BELLO UNIVERSITY,
ZARIA, NIGERIA
Keywords
OPTIMIZATION OF DAYLIGHTING,, USING LIGHT-PIPE DEVICE,, DESIGN OF ACADEMIC LIBRARY,, SUMMIT UNIVERSITY, OFFA