Dear Reader: An important feature on many lighting controls systems is the ability to gradually ramp up the amount of lumen output of a fixture when a person enters a work space area, rather than a hard, harsh jump to ‘On’. Conversely, the use of this as a strategy might be deployed on the back […]
Eliminate Harsh On and Offs with Ramping and Fading Read More »
Dear Reader: Virtually all Facilities and Energy Managers are aware of the value of occupancy sensors used in conjunction with LED luminaires, but some might benefit from an enhanced understanding of how to adjust the settings to optimize their lighting system’s ability to lower energy consumption without compromising the illuminating qualities of each fixture within
Use Occupancy Sensors to Detect People Read More »
Dear Reader: On/off, stepped switching, stepped dimming, or continuous dimming .. which approach does the Facilities Manager select? The answer depends on what type of area is being illuminated, and how the Manager wants the fixtures to behave over various, changing operating conditions. Reference PNNL’s Dimming LEDs with Phase-Cut Dimmers for help in this regard.
Conditions Change and So Should Your Lighting Outputs Read More »
Dear Reader: Virtually all Facilities and Energy Managers are aware of the value of occupancy sensors used in conjunction with LED luminaires, but some might benefit from an enhanced understanding of how to adjust the settings to optimize their lighting system’s ability to lower energy consumption without compromising the illuminating qualities of each fixture within
Dear Reader: ScienceDirect.com tells us: “Anthropogenic emissions of greenhouse gases have perturbed the Earth’s energy budget, changed Earth’s climate, and are projected to result in considerable climatic change over the next decades to millennia. Examples of physical climate change impacts are an increase of average surface air temperatures, melting of glaciers and ice sheets, sea-level
LED Lighting’s Positive Impact on Acid Rain Read More »
Dear Reader: From NOAA’s Climate.gov, “Carbon dioxide is Earth’s most important greenhouse gas: a gas that absorbs and radiates heat. Unlike oxygen or nitrogen (which make up most of our atmosphere), greenhouse gases absorb heat radiating from the Earth’s surface and re-release it in all directions—including back toward Earth’s surface. Without carbon dioxide, Earth’s natural
Reduce Carbon Dioxide Emissions with LED Lighting Read More »
Dear Reader: It should come as no surprise that some LED product lines perform at a higher quality than others, and in determining which are statistically at the higher end of the market in advance of a system purchase makes a good deal of sense. For a few extra dollars, the Facility Manager can provide
Enhanced CRI with R9 Red and R13 Skin Tones Read More »
Dear Reader: The quality of electric lighting is a matter of color, and the industry has broken it into 14 shades. When a fixture is rated, each of these shades is judged through a testing method designed to assess how close the respective shade mimics the color of sunlight, on a scale of 1 to
The Color Rendering Index (CRI) Scale Read More »
Dear Reader: We like to keep in mind that the purpose of electric lighting is to enable human beings to see. While that would seem to be self-evident, as facilities professionals it’s possible for us to focus on optimizing the quantity of light, sometimes at the expense of quality. It’s not uncommon at all for
The Effects of Color Temperature on Human Eyes Read More »
Dear Reader: An LED lighting system buyer has a myriad of considerations to concern him/herself with when confronted with fixture product line decisions, and the type of materials selected for that fixture, and its finishes, are an important piece to the ultimate set of decisions. There are basically three types of materials available for use
LED Fixture Housing Materials Read More »
