VidPro
Flashlight Enthusiast
This is a really weird question, i will try and break it down into parts. its IDEAS, and subject to major change, due to (as usual) i dont know what the heck i am doing.
8 or 9 6Watt RGB leds need heat sinking, and some sort of metal "art" tech art type of light fixture.
so i am trying to make a heat sink, that looks like some sort of faux art too, that is function over form.
i was thinking about attempting home-made heat pipes, some sort of liquid inside them that moves , using convection, this leads to a Lot of questions. If there is a moving liquid , even convectionally flowing, the heat gets moved away, as opposed to Held in the location, and its cheaper than way to much costs in copper.
First the possibility of the design, Remember CHEAP, available, and Home made in garage , not real shop.
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copper PIPES (from home depot type) teir down off of T-junctions, connected to a top pipe that connects them all.
at the end of the pipe a simple solderable pipe cap, on the pipe cap the LED itself sits (at the ends of the legs dangling down)
angles of the pipes is adjusted for the lights location, to "aim" them, and then a plastic difusion box is placed around either the whole contraption, or each led item.
there should be a slight vaccume Sealed into the inside of the (heat) pipe, for 2 reasons, there is less air/oxygen to react to the metals, or the internal liquid, and vaporisation in a slight vaccume would occur at lower temps.
1) what to fill the pipes with? so it lasts 20 years.
1A) does oil convection flow, just like water can, with hot oil rising?
1B) how is getting oil on the pipe going to effect soldering in a seal?
2) wierd idea time, to create a VACCUME, a perfectly easy way to do that is to "steam" the insides, say using water , steam will replace all the air, then Seal this up, while its still steaming. When it cools down, a strong vaccume would form as the steam condences back to liquid. strong enough that it could even collapse the pipes.
2B) How would a soldering go when steam is still comming out, ya know trying to accomplish the SEAL, with the steam trick. soldering water pipes with water in them (as you know) doesnt occur till the water is GONE
3) a substance that has greater volitility , so it vapors faster at temperatures , but is not flamable, and can be purchaced (and tested) locally.
4) not an option, is what i have seen done before, where the vaccume is done with Valving, like air compression valves, any type of rubber plastic or whatever seal, that is changable, would not last long enough, besides the fact that i dont have a vaccume pump.
5) effects of various substances like 50-50 antifreeze, over TIME, via the metals themselves, ya know antifreeze becomes blob-o-freeze in 3 years , even closed water cooling systems (for computers) with the Right stuff in them, end up with terrible reductions of transfer at the CPU sink in less than 3 years. nasty junk collects around the water block on the cpu.
6) zero maintance of the substance internal to the pipes, one shot one time, get it right and hope that whatever coagulation, or conversion, or reaction that can or will occur, will not change it Much in 20 years. that is why i am thinking a 5W oil, but even oil has PH issues around metals.
so you get the idea? copper water pipes, turned into heat pipes AND a fixture at the same time, done with simple tools and garage shop guesses.
8 or 9 6Watt RGB leds need heat sinking, and some sort of metal "art" tech art type of light fixture.
so i am trying to make a heat sink, that looks like some sort of faux art too, that is function over form.
i was thinking about attempting home-made heat pipes, some sort of liquid inside them that moves , using convection, this leads to a Lot of questions. If there is a moving liquid , even convectionally flowing, the heat gets moved away, as opposed to Held in the location, and its cheaper than way to much costs in copper.
First the possibility of the design, Remember CHEAP, available, and Home made in garage , not real shop.
---=---=---=---=---=-------
. . || . || . || . || . ||
. . || . || . || . || . ||
. . || . || . || . || . ||
copper PIPES (from home depot type) teir down off of T-junctions, connected to a top pipe that connects them all.
at the end of the pipe a simple solderable pipe cap, on the pipe cap the LED itself sits (at the ends of the legs dangling down)
angles of the pipes is adjusted for the lights location, to "aim" them, and then a plastic difusion box is placed around either the whole contraption, or each led item.
there should be a slight vaccume Sealed into the inside of the (heat) pipe, for 2 reasons, there is less air/oxygen to react to the metals, or the internal liquid, and vaporisation in a slight vaccume would occur at lower temps.
1) what to fill the pipes with? so it lasts 20 years.
1A) does oil convection flow, just like water can, with hot oil rising?
1B) how is getting oil on the pipe going to effect soldering in a seal?
2) wierd idea time, to create a VACCUME, a perfectly easy way to do that is to "steam" the insides, say using water , steam will replace all the air, then Seal this up, while its still steaming. When it cools down, a strong vaccume would form as the steam condences back to liquid. strong enough that it could even collapse the pipes.
2B) How would a soldering go when steam is still comming out, ya know trying to accomplish the SEAL, with the steam trick. soldering water pipes with water in them (as you know) doesnt occur till the water is GONE
3) a substance that has greater volitility , so it vapors faster at temperatures , but is not flamable, and can be purchaced (and tested) locally.
4) not an option, is what i have seen done before, where the vaccume is done with Valving, like air compression valves, any type of rubber plastic or whatever seal, that is changable, would not last long enough, besides the fact that i dont have a vaccume pump.
5) effects of various substances like 50-50 antifreeze, over TIME, via the metals themselves, ya know antifreeze becomes blob-o-freeze in 3 years , even closed water cooling systems (for computers) with the Right stuff in them, end up with terrible reductions of transfer at the CPU sink in less than 3 years. nasty junk collects around the water block on the cpu.
6) zero maintance of the substance internal to the pipes, one shot one time, get it right and hope that whatever coagulation, or conversion, or reaction that can or will occur, will not change it Much in 20 years. that is why i am thinking a 5W oil, but even oil has PH issues around metals.
so you get the idea? copper water pipes, turned into heat pipes AND a fixture at the same time, done with simple tools and garage shop guesses.
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