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Lighting Research Center’s report on dimmable LED lighting tests

Lighting Research Center's report on dimmable LED lighting tests
The lamp-testing lab at Lighting Research Center Source:Lighting Research Center

By BizLED Bureau

Aug 29, 2016: The Lighting Research Center (LRC) has released a report on pilot tests of dimmable LED luminaires and adaptive controls in an office setting. The report has been commissioned by Bonneville Power Administration (BPA), a US Department of Energy (DOE) agency. The BPA researchers established that the connected lighting systems were tricky to commission and, at times exasperating for workers to use once set up, but the solid-state lighting (SSL) systems absolutely delivered energy savings on the basis of occupancy-sensing and daylight-harvesting controls.

 Significant details of the report

The LRC worked with its Lighting Energy Alliance (PEA) partners, which included Efficiency Vermont, Energize Connecticut, and National Grid on the set up and examination. BPA aimed to understand the complication of installation and commissioning, how archetypal systems worked, the dissimilarities between dedicated sensors that control zones of luminaires in respect to luminaires with essential sensors, and the dissimilarities in power demand when diverse luminaires were connected to a variety of tested control systems.

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The pilot  tests involved the assessment of three control systems that might be used with any 0–10V dimmable luminaire and also the Philips Lighting SpaceWise linear luminaires that have essential sensors and control system. The other three systems were  Cree SmartCast, Lutron Energi TriPak, and Wattstopper DLM Zone. These systems were set up with assorted wireless sensors, switches, and dimming modules.

Lighting Research Center’s report on dimmable LED lighting tests

The report brought into attention that the documentation for commissioning procedure was possibly not in concluding form when the group obtained the products with all of the platforms having been comparatively new at the time. The news on the energy-efficiency front is much brighter.

The sensor-based systems convey important extra energy savings relative to time-clock-based programmatic control. Systems that require a manual turn-on action deliver even more energy efficiency compared to those with automatic turn-on, according to the report.

In the comparison of zone-based sensors to integrated sensors, the report states no conclusive preference in terms of use case or power used. On the contrary, the report said that option is dependent on the application and room configuration. Testing three different luminaire types enabled the researchers to conclude that energy usage can be quite different based on the driver in every luminaire model. Dim levels don’t up from product to product with respect to light produced or energy used.

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Since the luminaires would possibly be operated at less than 100% most of the time, the power factor may or may not be an matter. The severe drops in power factor happen at very low light levels where the luminaires are drawing far less power in any case and so, the impact on a utility may be unimportant, according to the report.

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