Electric lighting
From Appropedia
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See also the Electric lighting category. for subtopics, how-tos, project pages, designs, organization pages and more. |
Worldwide, grid-based electric lighting consumes 19% of total global electricity production.[1] The energy used to provide the world's light is 1 900 Mt of CO2 per year.[1] In Africa 60% the energy for lighting and other needs is derived from wood, leading to deforestation.[2] Combustion-based lighting is also a major cause of respiratory illness,[3] and generally of poor quality for reading, contributing to illiteracy.[4] All in all, plenty of reason to seek ways of providing more sustainable lighting everywhere. Certainly electric lighting will be a key part (in addition to Natural lighting).
- CFLs or compact fluorescent lightsW are a popular choice for energy-efficient lighting, and have the advantage that they can be used in regular light fittings.
- Fluorescent lightsW with Electrical ballast#Electronic 'ballasts'W are slightly more efficient than older fluorescent lights and give a more pleasant light.Most CFLs now come with an electronic ballast [5]
- LED lighting is becoming increasingly attractive. It is used in remote regions such as Nepal, by the Light Up the World Foundation as a healthier replacement for kerosene lighting. These lights are far sturdier than other types of lighting, especially compared to fluorescent lights.
- LVD or Electromagnetic induction bulbs or the Electrodeless lampW These relatively new lamps offer dimmable, longer life and half the Watts per lumens than CFLs. [6] More information is needed on their performance [verification needed]
[edit] Suggested projects
- Compare light quality of different lights. What is the flicker rate of CFL? Are there better quality ones, comparable to the high quality but expensive tri-phoshpor fluorescent lights with electronic ballasts?[Suggested project]
- Start a section on tri-phosphor lighting in the relevant Wikipedia and/or Appropedia article.)[Suggested project]
- Compare the life expectancy of different types of lights - find peer-reviewed studies, if possible. What factors affect life expectancy?[Suggested project] (CFLs sometime don't last as long as expected in my experience, though I've been told by an efficient lighting expert that Phillips and Osram are more reliable than other brands. --Chriswaterguy · talk 19:19, 1 May 2007 (PDT))
- ↑ 1.0 1.1 http://www.iea.org/Textbase/npsum/Light2006SUM.pdf
- ↑ http://www.uneca.org/mdgs/goal7.asp
- ↑ http://blumcenter.berkeley.edu/led-lighting-replacement-project
- ↑ http://www.dhan.org/electricity/
- ↑ http://www.electronics-project-design.com/ElectronicBallastDesign.html
- ↑ http://lvdbulbs.com/lvd_faqs.htm
