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post #1 of 8 (permalink) Old 10-31-2019, 01:34 PM - Thread Starter
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An odd air cooler

"The OHP is a simple, wickless heat pipe capable of rejecting more than 200 times the maximum heat load of an axially grooved heat pipe, and transporting more than 45 times more heat than copper" here (https://www.thedrive.com/the-war-zon...-days-in-space).
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post #2 of 8 (permalink) Old 11-01-2019, 02:57 AM
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I wonder how long it will take for these heatpipes to reach consumer market with affordable price.

Nonetheless, this is so exciting
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post #3 of 8 (permalink) Old 11-01-2019, 05:34 PM
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And no sleeved cables either? No RGB?

DARPA they tell you.. pfft...

Send them a Raijintek engineer or something!

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post #4 of 8 (permalink) Old 11-01-2019, 06:01 PM
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Those claims are dubious. 200 times more than an axial heat-pipe of the same size?

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post #5 of 8 (permalink) Old 11-01-2019, 07:06 PM
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nah, totally legit. it was probably salvaged from a tictac.

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post #6 of 8 (permalink) Old 11-02-2019, 02:35 AM
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Video explaining how this Oscillating Heat Pipe (OHP) stuff works (go to 1:48):


·
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post #7 of 8 (permalink) Old 11-02-2019, 07:01 AM
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I remember talking with Captherm about their MP-1120 and MP-1240 Multiphase CPU coolers shown at CES 2014 and 2015, but for some reason never reached consumer market. Think they were using OCP.
I've wondered when Oscillating heat pipes (OHP) would reach CPU coolers as they've been around almost 30 years now. Probably need mass production to make them economical enough to compete with conventional heatpipes. The were originally developed and patented by Hisateru Akachi back in 1990.

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post #8 of 8 (permalink) Old 11-02-2019, 10:49 AM
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Quote: Originally Posted by TELVM View Post
Video explaining how this Oscillating Heat Pipe (OHP) stuff works (go to 1:48):

https://www.youtube.com/watch?v=kaYEkwcG1rU&t=1m48s
This paper also gives some good info on strengths and weaknesses of oscillating heatpipes. Perhaps my understanding is wrong, but it appears OHPs prefer to be used planarly with a single evaporator and condensor block to ensure proper oscillation. This sounds great for a heatspreader or heat pipe transporting heat in a planar direction like in a laptop or phone, but this will not work well in desktop machines that rely on U or L shaped heatpipes to transport heat vertically due to other tall things in the vicinity of the heatsource like the memory, VRMs and GPU.

I wonder if a U or L shaped design is possible but no one has bothered to try when a planar design is so much simpler to design and works good enough for their application. Something like this recently proposed radial pulsating heat pipe heatsink seems to be the closest design to something that would be used in a desktop system.
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