Title: Reading Assignment – Lighting Technologies
Course: WGF 107 DEVELOPMENT > Section: Content

Title | Reading Assignment – Lighting Technologies
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Sub-Title | Lamps/Ballasts – Incandescent, Halogen, Fluorescent, HID, Metal Halide, Induction, LED/SSL
Content | A coefficient of utilization (CU) is a measure of the efficiency of a luminaire in transferring luminous energy to the working plane in a particular area. The CU is the ratio of luminous flux from a luminaire incident upon a work plane to that emitted by the lamps within the luminaire. As a ratio, the coefficient of utilization is unitless. For example, some of the light emitted by a luminaire may exit away from the desired plane and is therefore wasted. A CU measures the light actually reaching the desired plane as a percentage of the total light produced by the fixture
Image | Representative Co-efficient of Utilization’s for most every electrical fixture/technology.
Links/Uploads | Efficient Lighting – Energy Efficiency and Renewable Energy http://energy.gov/public-services/homes/saving-electricity/lighting Lighting Fixtures and Lighting Layouts – GE Lighting & Electrical Institute http://www.virgilghic.com/ge/Fixtures_and_Layouts.pdf
Attributions | Images courtesy of Lighting Fixtures and Lighting Layouts – GE Lighting & Electrical Institute Content courtesy of Wikipedia – The Free Internet Encyclopedia