Retrofit : Retrofit Volume 2 Issue 2 2013
RETROFIT AUSTRALIA • VOLUME 2 NUMBER 2 2013 • 41 Lighting | • Personal tuning2 31% • Institutional tuning2 36% • Multiple approaches 38% Savings identified in the same study from lighting controls in various building types are as follows (blank cells indicate insufficient data to be conclusive): Researchers have been quantifying energy savings from lighting controls in commercial buildings for more than 30 years; however, until this work, no comprehensive research review of controls studies had been done previously. The value of the research lies in providing a big-picture understanding of the opportunities presented by lighting controls, untainted by the individual studies performed previously, which have had different goals, methods, coverage and results. 2 'TUNING' IN THIS CONTEXT REFERS TO DIMMING CONTROLS. The researchers conclude: The results of this meta-analysis, viewed in aggregate, provide strong evidence that currently available lighting controls strategies can and do provide significant lighting energy savings in commercial building applications. This finding has significant implications for energy policy. There is no reason to believe that the savings identified in the United States study would be materially different in Australia. The conclusions suggest that the Australian Government would do well to consider a prominent role for lighting controls in its energy policy strategy. Given the significant energy savings available, it is perhaps time that our government added lighting controls to its other strategies when targeting energy savings from lighting. Lighting controls and LEDs The authors of the US Department of Energy study referred to above based their research mainly on fluorescent technology. They point out that LEDs are an inherently low-voltage source that can be more cost-effectively dimmed over a wider range than incumbent technologies, and are therefore more amenable to control strategies. All evidence therefore suggests that lighting controls will play a central role as we transition to solid state lighting. Building Type Occupancy Daylighting Personal Tuning Institutional Tuning Multiple Types Office 22% 27% 35% 36% 40% Warehouse 31% 28% - - - Accommodation 45% - - - - Education 18% 29% 6% - 34% Retail (other than shopping malls) - 29% - 60% - Healthcare inpatient - - - - 35% Public assembly 36% 36% - - - Healthcare outpatient 23% - - - - Given the significant energy savings available, it is perhaps time that our government added lighting controls to its other strategies when targeting energy savings from lighting.
Retrofit Volume 2 Issue 1 2013
Volume 2 Issue 3 2013-2014