Lighting. Monday , September 24th , 2018 - 03:48:49 AM
One of the most popular new solutions comes in the form of strip LED cupboard lights, which can be attached to the underside of kitchen cabinets in order to illuminate work surfaces and food preparation spaces. This compares favourably to other kitchens with more traditional lighting, where shadows can mean darker conditions for preparing food. Also known as LED tape lighting, this solution is easy to install and comes in a variety of different colours, meaning that there is something to suit everyone's home. This kind of lighting is also particularly good for modern homes, as strip LED cupboard lights have a distinctly contemporary appearance.
Now we can take the color of our light source that we are looking at and compare it with the Color Rendering Index (CRI). The CRI of a light source compares the color of the source to a Black Body color index of the same color temperature. The maximum Color Rendering Index number that is possible is 100. The higher the CRI of your light source the more natural colors will appear when illuminated by it. Light sources with a low CRI will distort the colors that are viewed with them.High (above 80) CRI is preferred in the home. ENERGY STAR requires that qualified fixtures have lamps with CRI above 80. Daylight and all incandescent and halogen light sources have a CRI of 100 and they are excellent at rendering color. For a warm lamp, the CRI is a measure of how close to incandescent color it is, and for a very cool lamp the CRI is how close to daylight it is. The lamps CRI should be listed in the Manufacture's literature.
Fluorescent lighting has been around a long time and you may not think it is that efficient. Old fluorescent lighting certainly isn't T12 and T8 tubes and their drivers can be horribly wasteful, sometimes using double the amount of power they are rated at. However T5 fluorescent tubes coupled with a modern ballast is remarkably efficient, almost as efficient in fact as LED lighting. Modern warm start ballasts have also increased reliability and allowed for extending the life of the tubes which can now reach as much as 30,000 or 40,000 hours. Modern drivers also operate at high frequency, unlike their older counterparts, which mean there is no longer a noticeable flicker with fluorescent lights. Fluorescent lights do also suffer from early failures, and because they rely on a filament the more often they are turned on and off the shorter their life will be; this means turning them on and of with presence detection to reduce their use and save money on your bill could backfire when you have to frequently replace the tubes. If you do go down this route make sure the drivers feature warm start and don't set the controls to frequently turn the lights on and off.
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