Optimizing Daylighting In The Design Of Proposed Exposition Center Abuja

Getting light into the building entity in a clever way is an important stride to designingenergy efficient buildings. Learning how to use daylighting, in an efficient way while havingcontrol will reduce energy demands in buildings and also facilitate a good visual comfort forusers especially in a developing country like Nigeria where most trade fare take place usingartificial lighting which increases operational cost. Most Exposition tend to use artificiallighting because proper daylighting design has not been integrated into the building. Thisstudy identifies different daylighting techniques that will reduce operational cost and at thesame time, create a good visual experience. Literature on daylighting were studied, in whichthe advantages of daylighting in buildings were identified, different daylighting techniquesand system were examined and various ways daylighting can reduce operational cost. Theresearch methods adopted where exploratory case study, experimentation, visual survey ofthe various features inclined to the research work. Quantitative data collection method whereadopted through personal observation /field survey, sketches, photographs and case studycheck list as data collection instrument. Case studies of relevant exhibition Centre buildingswere analysed using variables such as the building envelope shape, geometry and locationof aperture, surface characteristics, special distribution of light, illuminance ratio, colourrendition and visual noise, model of three case study buildings were carried out and runthrough simulation soft wares such as Ecotect, Radiance and daysim using data frommetrological department. The various material properties used in the modelled buildingunder observation where altered in terms of their “u-factor” “R-value” and Solar Heat GainCoefficient (SHGC) and it was observed that energy consumption in terms of lighting wasreduced by 35%. An important finding of the research was that a conscious proposition thatwill fuse daylighting as a major design consideration in term of materials and designconsiderations is essential for a successful daylighting design for buildings. This findingaffects the design process from optimizing building orientation, the perfect size, form and glazing treatment for windows, working with bright interior surface and shading for visualcomfort. For the research design, atrium, laminated glass, and light shelves was appropriatefor use. The implication of this finding opens a new dimension to the design of Expositioncentres.

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