PERFORMANCE OF LIGHT SHELVES OF ZERO ENERGY BUILDING AT BUILDING AND CONSTRUCTION AUTHORITY (BCA)
WONG CHONG HUI
WONG CHONG HUI
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Abstract
Green technologies and researches have been greatly initiated and encouraged by the Singapore government in recent years. In fact, the government has pledged S$1 billion in April 2009 to implement a long term blueprint as a continuous development of new and sustainable technologies and alternative sources of energy (Straits Times, March 2010).
In line with the green endeavors of the Singapore government, the Zero Energy Building (ZEB), situated in the Building and Construction Authority (BCA) Academy, is constructed to serve as a full test bed for various passive and active green technologies and their effectiveness and applicability.
Of the various green technologies, the light shelves in ZEB forms the focus of this research study. Objective and subjective studies were carried out to evaluate on the thermal and visual performances of the classroom in ZEB to study the effectiveness of the light shelves. Specifically, the top surfaces of the light shelves are compared to determine how the reflective mirrored surfaces seek to increase the amount of natural daylight being reflected into the interiors of the classroom as compared to a non-reflective surface. Other parameters analyzed include daylight factor, mean radiant temperature (MRT) and solar irradiance of the façade and rooftop.
Results obtained from the objective study are able to ascertain the performance of the light shelves with and without the reflective surfaces although certain constraints, which will be discussed in the report, may indirectly affect onsite measurements. The constraints also apply to the subjective study and because the results yielded an incomprehensive outcome, a further subjective study is recommended to validate the human perception on the thermal and visual comfort in the classroom. Recommendations are included in the report to allow for future research and project continuity.
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Building, Project and Facilities Management, Wong Nyuk Hien, 2010/2011 PFM
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Date
2011-05-20
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Dissertation