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Jake Dyson Lighting

dyson.com

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Re: Jake Dyson Lighting

#4
post #2

I thought heat pipes needed convection to work. How would the liquid move in a straight, level pipe?

The liquid in a heat pipe can return to the hot end through capillary action, and I believe this is how heat pipes in computer equipment work. They can work in any orientation.

https://en.wikipedia.org/wiki/Heat_pipe

Re: Jake Dyson Lighting

#5
I was such a huge Dyson fan, bought a cleaner a decade ago, read his books.

Had the suspicion the cleaner was crap. Lots of reviews said the same. But I convinced myself I and the others were wrong, Dyson is a genius.

Some years ago I finally admitted it was expensive crap and got something else.

Re: Jake Dyson Lighting

#7
post #2

I thought heat pipes needed convection to work. How would the liquid move in a straight, level pipe?

The liquid in a heat pipe can return to the hot end through capillary action, and I believe this is how heat pipes in computer equipment work. They can work in any orientation. https://en.wikipedia.org/wiki/Heat_pipe

I agree that this is most likely to be a capillary-pumped heat pipe. For more reading about how the wicks work:

http://www.thermalfluidscentral.org/encyclopedia/index.php/C...

Re: Jake Dyson Lighting

#9
post #2

I thought heat pipes needed convection to work. How would the liquid move in a straight, level pipe?

The return mechanism is via capillary action; surprisingly, heat pipes work in any orientation, even freefall.

Very high g-forces can prevent them working, though.

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