Lighting. Tuesday , September 25th , 2018 - 11:01:07 AM
Changing a light bulb is one of the easiest yet most effective ways of reducing energy consumption and cutting carbon emissions. Simply replacing an incandescent bulb with an energy saving alternative can cut electricity use by up to 80%. The Energy Saving Trust believes that lighting accounts for 8% of household electricity costs in the UK which means there is great potential for substantial energy and money savings.
Out door lighting is not necessarily just for practicality. You can use it for both decoration or security purposes. A nice outside light in front of the home or office can not only look very good, it can also offer security. If the outdoor area is very large, such as a large garden in the family home, then flood lighting can be used, or strategically placed track lighting. If you are looking for a party feel then fairly lights are good, if you are looking for simple and practical then some ceiling lights or spot lights could work well.
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.
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