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So how big the it should be? According to Lumiled application guide "each watt of LED power needs about 9 square inches of surface area open to free air for cooling." That's a lot of cooling surface. Why LEDs need a sink to dissipate heat? There is a good third party explanation here: http://patmullins.com/ledlightmyths.html#toc2
Application brief for thermal design http://www.lumileds.com/pdfs/AB05.PDF Tips for custom or standard sinks We know that heat is a problem. -- Every light fixture is a heater, the brighter the light the more the heat. That includes LEDs too. ![]() Lamina LED modular heat sinks Dont try a LED bulb without a proper sink - it will fail! A high output high voltage light fixture is the worst heater of all light sources. In the domestic LED field, they are the so called super bright LEDs. Here the best design has the finned shape (like a radiator) as it allows for the biggest surface to dissipate heat. And for both domestic and residential applications I like modular designs the most. And for the
commercial grade bright LED market there are standard designs for added
cooling devices.From the size of these babies you can see the amount of metal and air volume you need for these very high output LED lights. And if you need something tailor-made, custom
solutions are also available, often
from same companies that offer standard designs. Of course - as always
- consider the added costs involved. Remember, the any decent
bright LED light
source together with engines, circuits and what not are still
a bit pricey as an outlay. But an integrated modular sink
design works on so many levels
-- and that WILL multiply both your energy savings and the profit you
make on your LED investment. Related Articles These bright LED
replacement bulbs - all have heat built-in
sinks Super bright
LEDs need to dissipate heat at base Learn how heat
and light interacts in LED and other light fixtures Return to top of heat sinks page Back to LED Light Bulbs Home to LED Lights Guide Owned and published since 2005 by our friendly family business Newhouse PL. Mailing address: PO Box 2718 Mount Waverley VIC 3149 Australia. Home
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