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Water-cooled high-power LEDs

Electronics / LEDs
Added 17 comments

Hello everybody. Many find it difficult to buy aluminum for an LED lamp - the problem is solved by simple water cooling. A half liter can perfectly copes with cooling a 10-watt LED.

For this you need a 10W LED and hot melt adhesive.

The lid of the can should be cleaned with sandpaper and glue the LED.

For stabilization, I used the finished assembly LM 317.

Power supply 12V 1A.

I hid this entire structure in a 100 mm pipe, having previously installed three screws at the bottom so that the jar would not fail.



If, instead of water, oil is poured, this design can be used outdoors as a facade lamp.


Accordingly, to cool the 100W LED, you need a capacity of 5 liters of water.
Thank you all for your attention.
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17 comments
Author 0
Reply To quote A complaint
Quote: Valentin-sky
How do you glue the radiator to the surface? Can you tell the brand?

In 2 photos the tube ... it's glue
0
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How do you glue the radiator to the surface? Can you tell the brand?
Author 0
Reply To quote A complaint
Quote: New Standard
I’m wondering about the fish ... I recently tried that LED with its own radiator to load into water ... though the contacts should be properly insulated ... in distilled water, of course it’s easier ... it really shines right, I don’t know for how long .. . and yes the water itself can be tinted. ..alternative to neon signs ...

I stuck a lens and a radiator on the LED and lowered it into water ..... if it is well insulated with silicone, it will not burn out
+1
Reply To quote A complaint
Quote: Coudeyar
Quote: New Standard
each inclusion of light causes heating of water ... that is, we increase the time for heating water

Still on the LED, the fish is well caught ... this half a liter should be put in a large jar, closed and lowered into the water ... the fish is also curious ..


I’m wondering about the fish ... I recently tried that LED with its own radiator to load into water ... though the contacts should be properly insulated ... in distilled water, of course it’s easier ... it really shines right, I don’t know for how long .. . and yes the water itself can be tinted. ..alternative to neon signs ...
Author 0
Reply To quote A complaint
Quote: New Standard
each inclusion of light causes heating of water ... that is, we increase the time for heating water

Still on the LED, the fish is well caught ... this half a liter should be put in a large jar, closed and lowered into the water ... the fish is also curious ..
Author 0
Reply To quote A complaint
Quote: New Standard
a pump is not necessary here ... heated water can itself move if there is a check valve in the circuit ...

No pump needed - Aluminum plants can shut everything !!
Author 0
Reply To quote A complaint
Quote: Valery
Well, perhaps.))))

And plus, all lumineum plants around the world can be closed ... they are no longer needed .. there are cans of water
0
Reply To quote A complaint
Quote: Coudeyar
Quote: New Standard
yes it’s clear that you need a lot of diodes in order to heat the shower water (up to 50 degrees) from 11 degrees (cold water in the tap) ... but you can warm up (by 1 - 2 degrees) before the boiler ... as a result, the boiler will eat less electricity with network ... and the diode so warms idle ...

In my conservatory there are 5 full-range diodes of 50 watts each ... I’ll try to convert them into a 60-liter aluminum pan in the summer and put this hot water into the battery with a pump.


a pump is not necessary here ... heated water can itself move if there is a check valve in the circuit ...
+1
Reply To quote A complaint
Quote: Valery
What are you talking about here? !!!
What, nafig, water heating? !!!
... How much power does a 10 watt diode dissipate ??? I personally don’t know and I don’t want to search !!!
Let the maximum (in your favor)))). Suppose that his efficiency is very, very small - only 10%. Then there is 9 left for heating. To heat one liter of water per degree, you need something about 1.2 W / h of energy. In an hour, your diode will give out 9 watts, that is, it will raise the temperature of one liter somewhere by 7-7.5 degrees. (This is under ideal conditions for heat removal. That is, you heat water in an ideal thermos !!! And if the thermos is not perfect, and the "outboard" air is cold - half that!))))). And if not a thermos, but a jar in a relatively cold room - then it may not heat up at all - the jar will dissipate more than the diode))))
And all this - in ideal, one might say, laboratory conditions ... But there is no thermos ... And the efficiency is not 10% ... and the heat sink is not ideal ...
Remember how long it takes for a submersible boiler to heat a glass of water ??? But there - 300 watts. And this is about 50 of your diodes !!!! And somehow I was warming in the frost on the street ... I still didn’t boil ... I only became warm ...

In a neighboring branch, the voltage is confused with the current strength, here - the temperature with the amount of heat ...
At the end of the cigarette, when puffed, it is also more than 1000 degrees ... So why are the blacksmith forges, why the crucible, why the blast furnace ??? )))). Let’s melt the metal with a cigarette.))))


I get 1 liter of heat at 7.75 degrees ... you can also heat 7.75 liters of water at 1 degree per hour (only 1 LED!) ... well, it’s right somewhere ... and then the task heat by 1 degree 8-12 liters per hour (for 1 shower a normal pink volume) ... and then the heated water is poured into the boiler and there it is already warmed up to 40-45 degrees ... clearly here we need serious thermal insulation during and after heating LED ... there will no longer be a can ... but at least an unnecessary but not broken thermos ... and even the LED itself is better to directly load up to half into the water ... With your boiler problems it is perfect - feeding of steam heats the immediately higher power in the bank as a result of micro-boiling water in the boiler helix decreases heat transfer to the water goes here ... A-stage heating ...
Another trick is that people do not always when they go to the bath take a shower and spend a lot of hot water ...at the same time, the lights always turn on ... each light turn on causes water heating ... that is, we increase the time for heating water ...
0
Reply To quote A complaint
Well, perhaps.))))
+1
Reply To quote A complaint
If the pump is electric, then its motor will heat water more strongly than diodes ...))))
Author 0
Reply To quote A complaint
Quote: Valery
What are you talking about here? !!!
What, nafig, water heating? !!!
... How much power does a 10 watt diode dissipate ??? I personally don’t know and I don’t want to search !!!
Let the maximum (in your favor)))). Suppose that his efficiency is very, very small - only 10%. Then there is 9 left for heating. To heat one liter of water per degree, you need something about 1.2 W / h of energy. In an hour, your diode will give out 9 watts, that is, it will raise the temperature of one liter somewhere by 7-7.5 degrees. (This is under ideal conditions for heat removal. That is, you heat water in an ideal thermos !!! And if the thermos is not perfect, and the "outboard" air is cold - half that!))))). And if not a thermos, but a jar in a relatively cold room - then it may not heat up at all - the jar will dissipate more than the diode))))
And all this - in ideal, one might say, laboratory conditions ... But there is no thermos ... And the efficiency is not 10% ... and the heat sink is not ideal ...
Remember how long it takes for a submersible boiler to heat a glass of water ??? But there - 300 watts. And this is about 50 of your diodes !!!! And somehow I was warming in the frost on the street ... I still didn’t boil ... I only became warm ...

In a neighboring branch, the voltage is confused with the current strength, here - the temperature with the amount of heat ...
At the end of the cigarette, when puffed, it is also more than 1000 degrees ... So why are the blacksmith forges, why the crucible, why the blast furnace ??? )))). Let’s melt the metal with a cigarette.))))

Our LEDs are not simple but atomic ...
+2
Reply To quote A complaint
What are you talking about here? !!!
What, nafig, water heating? !!!
... How much power does a 10 watt diode dissipate ??? I personally don’t know and I don’t want to search !!!
Let the maximum (in your favor)))). Suppose that his efficiency is very, very small - only 10%. Then there is 9 left for heating. To heat one liter of water per degree, you need something about 1.2 W / h of energy. In an hour, your diode will give out 9 watts, that is, it will raise the temperature of one liter somewhere by 7-7.5 degrees. (This is under ideal conditions for heat removal. That is, you heat water in an ideal thermos !!! And if the thermos is not perfect, and the "outboard" air is cold - half that!))))). And if not a thermos, but a jar in a relatively cold room - then it may not heat up at all - the jar will dissipate more than the diode))))
And all this - in ideal, one might say, laboratory conditions ... But there is no thermos ... And the efficiency is not 10% ... and the heat sink is not ideal ...
Remember how long it takes for a submersible boiler to heat a glass of water ??? But there - 300 watts. And this is about 50 of your diodes !!!! And somehow I was warming in the frost on the street ... I still didn’t boil ... I only became warm ...

In a neighboring branch, the voltage is confused with the current strength, here - the temperature with the amount of heat ...
At the end of the cigarette, when puffed, it is also more than 1000 degrees ... So why are the blacksmith forges, why the crucible, why the blast furnace ??? )))). Let’s melt the metal with a cigarette.))))
Author 0
Reply To quote A complaint
Quote: New Standard
yes it’s clear that you need a lot of diodes in order to heat the shower water (up to 50 degrees) from 11 degrees (cold water in the tap) ... but you can warm up (by 1 - 2 degrees) before the boiler ... as a result, the boiler will eat less electricity with network ... and the diode so warms idle ...

In my conservatory there are 5 full-range diodes of 50 watts each ... I’ll try to convert them into a 60-liter aluminum pan in the summer and put this hot water into the battery with a pump.
0
Reply To quote A complaint
yes it’s clear that you need a lot of diodes in order to heat the shower water (up to 50 degrees) from 11 degrees (cold water in the tap) ... but you can warm up (by 1 - 2 degrees) before the boiler ... as a result, the boiler will eat less electricity with network ... and the diode so warms idle ...
Author 0
Reply To quote A complaint
During the day, the water in the bank was heated at 5 degrees, this does not warm the shower water. To warm the water, you need to put a 500 watt LED - and then why bother? Boiler warms better.
+1
Reply To quote A complaint
yes, and I have such an LED for which it is still recommended to put a resistance of 2 Ohms, it heats strongly ... but since you are already in the bathroom, you can use the heating when lighting, not just for warm water in a jar ... but also to warm it up shower water ...

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