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Lighting : April May 2011
58 LIGHTING MAGAZINE | April/May 2011 Queensland Lighting Design Awards 2010 AwARDS Award of excellence to Glen Kay of Project services for Joint Contact Centre, Zillmere The project brief for the building lighting design was to achieve a high quality lighting design suitable for 24 hour Call Centre operation and complying with Australian Standards, a flexible operation with workstation task lighting and local dimming of general lighting, minimise energy use and a high levels of natural lighting with daylight glare control and compliance with Green Star credit points to assist in achieving a Green Star 6 Star rating. The extensive use of natural lighting and external views and the light coloured finishes of walls, ceiling and furnishings reduced day lighting glare and complimented the high level of natural lighting. Vertical and horizontal external shade structures including light shelving were used on the northern façade. High windows projected useful sky lighting deeply to within the building. Artificial lighting is primarily provided by indirect/direct louvre type fittings with a low glare classification. The use of supplementary up-lights in the daytime provides additional lighting on the ceiling members when the primary artificial lighting is dimmed and minimal in use. The artificial lighting at night provides both functional uniform horizontal lighting and a high level of vertical glare free lighting to enhance the working environment and appearance of the office spaces. Energy use has been minimised in the installation with two component lighting system comprising general base building lighting of 160 lux supplemented as required by desk mounted LED task lighting, high efficacy luminaires – Using single T5 lamp luminaires with DALI addressable electronic ballasts and LOR of 88%, maximise the use of natural daylight. The Lighting is controlled by movement sensors in small zones (maximum 4 lamps) to dim lighting when areas are not occupied. The base building lighting design achieves an Ene-5 Office Lighting Power Density of less than 1.5 watts per m2 per 100 lux. High levels of natural lighting with daylight glare control. The day lighting design achieved natural lighting above a daylight factor of 2.5% to the 78% of the net lettable area. Daylight glare was controlled by shading structures which resulted in 91% shading at windows from the hours of 8.00am to 6.00pm.
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