Water Cooled LED Flashlight :)

40 posts / 0 new
Last post

Pages

vestureofblood
vestureofblood's picture
Offline
Last seen: 2 days 14 hours ago
Joined: 08/17/2012 - 15:21
Posts: 1472
Location: Missouri
Water Cooled LED Flashlight :)

Hi all,
.
.
.
This is something I’ve been wanting to experiment with for a while now. I feel like this proves yet again that thermal path is king…


.
.
.
Please let me know what you think of the project.

In Him (Jesus Christ) was life; and the life was the light of men. And the light shineth in darkness; and the darkness comprehended it not.
http://asflashlights.com/ Everyday Carry Flashlights, plus Upgrades for Maglite.

DBSAR
DBSAR's picture
Offline
Last seen: 40 min 47 sec ago
Joined: 02/11/2013 - 23:28
Posts: 4376
Location: Ontario, Canada

That was both funny and cool to watch Smile Next is to go with liquid Helium super-cooling at -272 degrees C. Big Smile

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

Bort
Bort's picture
Offline
Last seen: 5 hours 55 min ago
Joined: 06/01/2012 - 17:15
Posts: 7376
Location: Holding the proverbial flashlight

Very impressive Smile

The Journal of Alternative Facts TM

"It is critical that there is a credible academic source for the growing and important discipline of alternative facts. This field of study will just keep winning, and we knew that all the best people would want to be on board. There is a real risk in the world today that people might be getting their information about science from actual scientists"

 

Tally-ho
Tally-ho's picture
Offline
Last seen: 1 hour 39 min ago
Joined: 07/23/2011 - 04:15
Posts: 450
Location: France

Your car vs. flashlight beamshot comparison cracked me up.

WalkIntoTheLight
Offline
Last seen: 4 days 17 hours ago
Joined: 12/05/2015 - 10:26
Posts: 900
Location: Canada

Nice! But, I think you also win the award for ugliest flashlight design. Wink

EasyB
Offline
Last seen: 2 days 18 hours ago
Joined: 03/09/2016 - 15:24
Posts: 1172
Location: Ohio

Pretty cool. Looks like a fun project. You are essentially adding a lot of thermal mass, but not dissipating it to the air. So how fast would your water heat up?

Your reservoir looked to be around 1L, so had a heat capacity of around 4000 J/K. The XHP70 was putting out maybe 50W of heat, so the water temperature would increase 1 degrees Celsius in about 80s. So if you started with the water at 0 degrees it would take 66min to get to 50 degrees.

Martini
Martini's picture
Offline
Last seen: 1 week 1 day ago
Joined: 05/07/2014 - 04:29
Posts: 643
Location: I da ho

Your company’s graphic design team is first rate, they deserve more money.

scdaf wrote:
It’s important to have your restraints within walking distance, lest someone needs restraining. Wink
Zulumoose
Zulumoose's picture
Offline
Last seen: 2 days 16 hours ago
Joined: 04/13/2017 - 09:25
Posts: 184
Location: South Africa

If you build another one like this, important safety note – don’t cross the streams!

Beam me up!

Bort
Bort's picture
Offline
Last seen: 5 hours 55 min ago
Joined: 06/01/2012 - 17:15
Posts: 7376
Location: Holding the proverbial flashlight

EasyB wrote:
Pretty cool. Looks like a fun project. You are essentially adding a lot of thermal mass, but not dissipating it to the air. So how fast would your water heat up?

Your reservoir looked to be around 1L, so had a heat capacity of around 4000 J/K. The XHP70 was putting out maybe 50W of heat, so the water temperature would increase 1 degrees Celsius in about 80s. So if you started with the water at 0 degrees it would take 66min to get to 50 degrees.


Add some ice, much higher heat of fusion Wink

The Journal of Alternative Facts TM

"It is critical that there is a credible academic source for the growing and important discipline of alternative facts. This field of study will just keep winning, and we knew that all the best people would want to be on board. There is a real risk in the world today that people might be getting their information about science from actual scientists"

 

Lexel
Lexel's picture
Offline
Last seen: 10 hours 9 min ago
Joined: 11/01/2016 - 08:00
Posts: 2638
Location: Germany

for those lights way beyond 30000 lumens I did in the past talk about watercooling with PC watercooling components and battery in a backpack

vestureofblood
vestureofblood's picture
Offline
Last seen: 2 days 14 hours ago
Joined: 08/17/2012 - 15:21
Posts: 1472
Location: Missouri
WalkIntoTheLight wrote:
Nice! But, I think you also win the award for ugliest flashlight design. Wink

Woot! I knew I was sure to win a prize of some kind Smile

EasyB wrote:
Pretty cool. Looks like a fun project. You are essentially adding a lot of thermal mass, but not dissipating it to the air. So how fast would your water heat up?

Your reservoir looked to be around 1L, so had a heat capacity of around 4000 J/K. The XHP70 was putting out maybe 50W of heat, so the water temperature would increase 1 degrees Celsius in about 80s. So if you started with the water at 0 degrees it would take 66min to get to 50 degrees.

Sounds reasonable. I would be out of battery before I was out of cool…

Martini wrote:
Your company’s graphic design team is first rate, they deserve more money.

I’ll let them know. Most day’s I’d like to fire them Grad

Lexel wrote:
for those lights way beyond 30000 lumens I did in the past talk about watercooling with PC watercooling components and battery in a backpack

It really is a lot of fun. No overly practical, but fun!

In Him (Jesus Christ) was life; and the life was the light of men. And the light shineth in darkness; and the darkness comprehended it not.
http://asflashlights.com/ Everyday Carry Flashlights, plus Upgrades for Maglite.

atbglenn
atbglenn's picture
Offline
Last seen: 46 min 50 sec ago
Joined: 07/29/2011 - 12:04
Posts: 4531
Location: Long Island, New York

Love your videos. I’ve said it before, you have a great sense of humor

Persechini
Persechini's picture
Offline
Last seen: 2 hours 29 min ago
Joined: 07/11/2017 - 03:32
Posts: 190
Location: Brasil

Now I know who I’m gonna call

In my Tree

My collectionConvoy: C8 Clear / S2+ Clear / S2+ / S2+ UV / S6 ― Nitecore: Tube / Thumb / Concept 1 / HC30 / Tip ― Trustfire: Z2 ― Sofirn: SF10 / SF12

Jtm94
Offline
Last seen: 1 hour 37 min ago
Joined: 02/22/2017 - 05:08
Posts: 207
Location: Pennsylvania

The one thing I learned is that any unexpected problems can be solved with 2 part epoxy.

KnifeNutsJake
Offline
Last seen: 2 days 3 hours ago
Joined: 06/22/2017 - 00:38
Posts: 20
Location: SEPA

Funny creative and informative simultaneously. Win.

Barkuti
Barkuti's picture
Offline
Last seen: 3 hours 50 min ago
Joined: 02/19/2014 - 14:46
Posts: 1813
Location: Alhama de Murcia, Spain

LoLoLoLoLoL vestureofblood! There are some inexpensive and good waterblocks you could have used, with the MCPCB installed over.

I understand that was a sort of quick “let's see how it goes” project, though.

Did I read someone claiming “up to 18A (2S) for the newer XHP70.2s on an L6” in the video comments? Freakin' seriously?  Can you make some scrambled eggs with it? 

 

Ronin42
Ronin42's picture
Offline
Last seen: 2 hours 41 min ago
Joined: 12/17/2014 - 22:17
Posts: 1583
Location: Alameda, CA

YOU ARE A NUT!

So fun….!

(“It’s good that most people can’t remember their previous lives. Otherwise
things would be a lot more complicated than they already are.”
Ajaan Lee Dhammadharo)

southland
southland's picture
Online
Last seen: 9 min 4 sec ago
Joined: 11/04/2012 - 07:15
Posts: 2817
Location: Georgia, USA

Very cool build, you kept my attention, kind of mod I like to see. Could see this easily being used on a scuba light, two opening and a pump, no tank needed.

djozz
djozz's picture
Offline
Last seen: 7 hours 9 min ago
Joined: 09/07/2012 - 17:04
Posts: 10846
Location: Amsterdam

Cool demonstration of how high power leds can run stable at these powers, and a fun video to watch Smile

Canyac
Offline
Last seen: 1 day 17 hours ago
Joined: 09/20/2016 - 04:27
Posts: 17
Location: Europe

Well done, fun project Smile

Phlogiston
Offline
Last seen: 8 hours 52 min ago
Joined: 10/27/2016 - 16:57
Posts: 267
Location: Scotland

The bit at the end where you were running around with that thing was priceless Smile

Thanks for posting (and providing proper captions) Thumbs Up

The Miller
The Miller's picture
Online
Last seen: 2 min 24 sec ago
Joined: 12/14/2015 - 12:08
Posts: 9731
Location: Charente France

Tally-ho wrote:
Your car vs. flashlight beamshot comparison cracked me up.

Yeah me too!

Epoxy FTW!

vestureofblood
vestureofblood's picture
Offline
Last seen: 2 days 14 hours ago
Joined: 08/17/2012 - 15:21
Posts: 1472
Location: Missouri
Barkuti wrote:

LoLoLoLoLoL vestureofblood! There are some inexpensive and good waterblocks you could have used, with the MCPCB installed over.


I understand that was a sort of quick “let’s see how it goes” project, though.


Did I read someone claiming “up to 18A (2S) for the newer XHP70.2s on an L6” in the video comments? Freakin’ seriously?  Can you make some scrambled eggs with it? 


 


I have some of the 70.2s on the way. I will do a test with them once they land.

southland wrote:
Very cool build, you kept my attention, kind of mod I like to see. Could see this easily being used on a scuba light, two opening and a pump, no tank needed.

Smile

In Him (Jesus Christ) was life; and the life was the light of men. And the light shineth in darkness; and the darkness comprehended it not.
http://asflashlights.com/ Everyday Carry Flashlights, plus Upgrades for Maglite.

chops728
Offline
Last seen: 1 day 18 hours ago
Joined: 08/30/2014 - 16:00
Posts: 504
Location: Swampland,La

Very Nice—-That light is almost as big as the BLF GT——- JK
Did the water eventually get hot in the jar

vestureofblood
vestureofblood's picture
Offline
Last seen: 2 days 14 hours ago
Joined: 08/17/2012 - 15:21
Posts: 1472
Location: Missouri
chops728 wrote:
Very Nice—-That light is almost as big as the BLF GT——- JK Did the water eventually get hot in the jar

Not really. Probly the longest I have run it was 10 minute bursts. This took room temp water up a few degrees, but not even what I would call warm.

In Him (Jesus Christ) was life; and the life was the light of men. And the light shineth in darkness; and the darkness comprehended it not.
http://asflashlights.com/ Everyday Carry Flashlights, plus Upgrades for Maglite.

solRNY
Offline
Last seen: 3 hours 56 min ago
Joined: 03/27/2017 - 17:24
Posts: 98
Location: Syracuse, NY

completely “cool” project, thanks for sharing Smile

chops728
Offline
Last seen: 1 day 18 hours ago
Joined: 08/30/2014 - 16:00
Posts: 504
Location: Swampland,La
vestureofblood wrote:
chops728 wrote:
Very Nice—-That light is almost as big as the BLF GT——- JK Did the water eventually get hot in the jar

Not really. Probly the longest I have run it was 10 minute bursts. This took room temp water up a few degrees, but not even what I would call warm.


That Brass tube is pulling lots of heat also—Have you tried without the water flowing
eebowler
eebowler's picture
Offline
Last seen: 2 hours 40 min ago
Joined: 08/13/2012 - 11:34
Posts: 1809
Location: Trinidad and Tobago GMT -4

I thoroughly enjoyed this video! You ‘running’ at the same speed as the car was awesome! Does the reflector have a window?

My gratitude to those who are willing and able to help others (in whatever way you can)! Being human is more than just existing for yourself. Smile

MontyPyfon
MontyPyfon's picture
Offline
Last seen: 2 days 8 hours ago
Joined: 05/03/2015 - 05:46
Posts: 316
Location: QLD. Australia

Great video and fun to watch.

Another Cooling Idea?
.
.

I wonder if anyone has tried to cool a LED using Glycerin?

It is a nice clear viscous liquid with very low electrical conductivity.

Encase the LED and wiring inside a small glass vial and circulate glycerin to keep it cool.
Should work ok.

Perhaps someone here with necessary tools etc may try this next.

To many flashlights, too many batteries. Wife is going to kill me Smile
Q8 (Still coming) S2+: 10, SRK style: 7, C8: 10, L2: 3,  L6: 2, Couri XM-L2: 1 LuckySun BLF SE: 3, EagleEye X6: 2   and lots more....

Monty

Lexel
Lexel's picture
Offline
Last seen: 10 hours 9 min ago
Joined: 11/01/2016 - 08:00
Posts: 2638
Location: Germany

when it comes to thermal path from the MCPCB to water it would have been more useful to cut a pattern with a CNC to it than reducing the thickness

they basically push the water against the copper like you did, but increasing the surface

just copying from PC watercool blocks

lionheart_2281
lionheart_2281's picture
Offline
Last seen: 52 min 25 sec ago
Joined: 10/25/2012 - 18:32
Posts: 2550
Location: Brisbane, Australia

LOL’d, liked and subscribed, nice work Matt

G’day!

Pages