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  #1  
Old 03-07-2014, 08:32 PM
indylights indylights is offline
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Enclosed LED well vs. bullet heat

Does anyone know, if all things being equal (full enclosure, same manufacturer, wattage of LED lamp, incoming voltage, etc.) if heat dissipates better from a glass covered well light with a retrofit LED lamp or an MR-16 copper bullet light with an LED retrofit lamp. Common sense would say metal dissipates faster than plastic, but I know they can do some pretty funky things with PVC these days. I tried researching online but didn't come up with anything conclusive. Thanks in advance.

Scott Maloney
Sunflower Landscapes
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Old 03-10-2014, 01:27 PM
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What do I know. But common sense tells me that the well light is more insulated in the ground than the bullet above ground. Therefore the above ground bullet would dissipate heat more quickly.

Maybe I'm way off track from what you are asking.
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Old 03-10-2014, 10:03 PM
Irrigation Contractor Irrigation Contractor is offline
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These are fantastic and extremely accurate, but also very handy to have for lighting installers.

http://www.exergen.com/industrial/dxseries/broch.html
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Old 03-13-2014, 05:40 AM
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INTEGRA Bespoke Lighting INTEGRA Bespoke Lighting is online now
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The copper bullet above ground will dissipate heat far better than composite below ground, unless that composite is a special mim or pim type of material designed specifically for heat dispersion. I don't know of any lighting fixtures using this type of material.

Funny how the whole "heat discussion" has seemingly evaporated over the past couple of years. (told ya so! lol)

Light on.
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Old 03-27-2014, 10:24 AM
Spilllight Spilllight is offline
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Not that I will convince anyone because I know that for many .... the consensus is in .... but I declare the Well Light with a glass lens cover of which I supply for many markets but I also sell MRs has much better thermal management. If I may ... how many 10w MRs are we putting in enclosed bullets? The heat sink on a par is mainly form factor. It is over kill in many cases, a 20 w LED could be used with the same design. An LED MR-16 is mainly designed for interior use. Requiring airflow. The circuitry may not even last as long as the LED Diode itself. Even if completely covered in mulch and with the glass lens...the Well is a new fixture that deserves consideration. We are looking at a 17w currently and have thermal tests with it in an enclosed brass PAR 36 holder.... If the LEDs are designed properly, often they are IP 67 for temporary underwater use up to 3' and some will meet the IP 68 standard for permanent submersible. Here's a pic .. food for thought ..
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Old 03-27-2014, 12:51 PM
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INTEGRA Bespoke Lighting INTEGRA Bespoke Lighting is online now
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That LED MR16 on the left did not fail from an excessive heat issue. That is clearly a failure of a component on the driver board.
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Old 03-27-2014, 01:19 PM
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Quote:
Originally Posted by Spilllight View Post
Not that I will convince anyone because I know that for many .... the consensus is in .... but I declare the Well Light with a glass lens cover of which I supply for many markets but I also sell MRs has much better thermal management. If I may ... how many 10w MRs are we putting in enclosed bullets? The heat sink on a par is mainly form factor. It is over kill in many cases, a 20 w LED could be used with the same design. An LED MR-16 is mainly designed for interior use. Requiring airflow. The circuitry may not even last as long as the LED Diode itself. Even if completely covered in mulch and with the glass lens...the Well is a new fixture that deserves consideration. We are looking at a 17w currently and have thermal tests with it in an enclosed brass PAR 36 holder.... If the LEDs are designed properly, often they are IP 67 for temporary underwater use up to 3' and some will meet the IP 68 standard for permanent submersible. Here's a pic .. food for thought ..
I guess my mind is working a little slow today. What point were you trying to make?
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Old 03-27-2014, 02:21 PM
Spilllight Spilllight is offline
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Uhm....Which point would you like for me to clarify?
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Old 03-27-2014, 02:32 PM
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Quote:
Originally Posted by Spilllight View Post
Uhm....Which point would you like for me to clarify?
The one that was meant to answer the original question.
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Old 03-27-2014, 03:00 PM
Spilllight Spilllight is offline
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I think I will pass and stand by my original reply as an answer...If you prefer MRs...I will not attempt to change your mind...by all means .... continue ..... we will be ships passing in the starry night.....))
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