Lighting : Lighting April 2016 - Vol 36 Issue 2
32 LIGHTING MAGAZINE | April/May 2016 The advantages of LEDs for Foster Park were: community perception of innovation and efficiency; dimmable with constant uniformity; instant on; reduced whole-of-life cost; reduced annual energy and operating cost; and video friendly (including slow-motion). The ability to instantly dim and control light levels is an increasingly important factor in multi- use sites, such as Foster Park, which will host events and other non-sporting functions. While the initial annual energy saving of approximately $13,000 may appear modest, operating funds are the most difficult for clubs and Councils to obtain, so the impact of modest operational savings is significant. POLE AND LIGHT SYSTEM The installation utilised precast concrete foundations and factory wired, aimed and tested 21m high sectional poles (see Figure 4 and 6). Installation was very quick and straight forward. Each pole can be rotated through 360̊ until its incorporated laser strikes the aiming point on the ground. This permits precise aiming from the ground rather than from an elevated work platform (see Figure 6). Drivers and control equipment are mounted on the pole at 3m enabling servicing to be undertaken from a ladder (see Figures 3 and 5). POINTS TO CONSIDER z When considering LEDs for sports park lighting, consideration should be given to: z users’ needs and proposed operating hours of z can benefits of LED be utilised? z increased capital costs but reduced operating cost z verification of data supplied z environmental impact of white light sources in excess of 5000K on night sky z utilisation factor – how much light is used to illuminate the field rather than being lost within the luminaire or surrounding environment? More high-output LED luminaires will enter the market over the coming years and clients will be looking to explore their suitability of LED for sports field lighting. Projects such as Foster Park will become benchmarks against which other projects will be compared. Reference 1 Color Temperature and Outdoor Lighting, Examining the Limits of CCT, Ian Ashdown, http://agi32.com/blog/2015/07/07/color- temperature-and-outdoor-lighting/ Figure 6. Luminaires being fixed to cross arms prior to lifting pole onto foundation visible in rear of photo. The laser for cross arm aiming is below the luminaire. Figure 5. The completed football field. The ability to instantly dim and control light levels is an increasingly important factor in multi-use sites, such as Foster Park, which will host events and other non-sporting functions.
Lighting February 2016 - Vol 36 Issue 1
Lighting June 2016 - Vol 36 Issue 3