dankcushions
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Fully metal heatpipe case?

Wed Mar 30, 2016 3:54 pm

when the first micro atx boards came out, i remember a lot of people making 'fanless' setups, which used heatpipes to take heat from the CPU/CPU/etc, and radiate it out of aluminium cases. a bit of an excessive example, but:

Image

i believe this is also how a lot of mobile phone/embedded arm devices deal with heat. no phones have fans in them, as far as i'm aware!

has someone made something like this for pis? i notice a lot of heatsinks and fan setups, but that seems a bit excessive/inefficient for these sort of devices.

zealousd
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Re: Fully metal heatpipe case?

Fri Apr 01, 2016 11:34 am

Image

i was thinking about doing this to the pi for shits and giggles, little overkill but could be done if the pi has got some load on it.
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rurwin
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Re: Fully metal heatpipe case?

Fri Apr 01, 2016 12:16 pm

I think the Proto Armor for the Pi1 did this, but the Pi2 version has an add-on that doesn't work the same and there is no Pi3 version yet.

It didn't use heatpipes though. It just used the solid block of aluminium case as the heatsink.

dankcushions
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Re: Fully metal heatpipe case?

Fri Apr 01, 2016 12:45 pm

the 'flirc' case seems to do this:
Image

https://www.youtube.com/watch?v=bQ4vCqek1uc

but eh, it only takes heat from the CPU (there's just a plastic vent above the rear chip (RAM, i think?), and the case doesn't seem to be designed to radiate heat.
Last edited by dankcushions on Fri Apr 01, 2016 2:08 pm, edited 1 time in total.

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rurwin
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Re: Fully metal heatpipe case?

Fri Apr 01, 2016 1:53 pm

The Ethernet chip has never needed any heatsink, and it is unchanged in the Pi3B. That case would have plenty of surface area to radiate the few watts that the Pi3 consumes.

See: http://www.engineeringtoolbox.com/conve ... d_430.html

dankcushions
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Re: Fully metal heatpipe case?

Fri Apr 01, 2016 2:18 pm

i mean the ram chip on the rear is unsinked - i've reworded my post to make sense :)

that case has the board upside down, resting on the aluminium block via the regular board mounts. i don't see it sitting exactly flush on the chip, but maybe. plus a large part of the aluminium's surface area is what is touching the ground. i'm sure for stock use it's probably fine (my enclosed case only hits the thermal throttle under sustained multicore load), but for overclocking i wouldn't be confident that competes with fan setups.

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rurwin
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Re: Fully metal heatpipe case?

Fri Apr 01, 2016 7:42 pm

But the RAM won't get hot. It's the SoC you need to be worried about, if anything.

That case will conduct the heat to the outside. I have a feeling that would be enough and convection will cool it enough. But even if I'm wrong you can put fins and/or fans on it. Just like those pictures you posted.

evilkitty
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Re: Fully metal heatpipe case?

Sat Apr 02, 2016 11:50 am

If you are really that worried about heat, pick up some of those cheap stick-on heat-syncs for the ram and NIC controller, then use the case dankcushions suggested and bolt a NH-D15 CPU cooler on it above the cpu, but if that cooler cost too much you can just use a Hyper 212 (plus or EVO) plenty of overkill either way

the heat-sync will cool the entire case
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dankcushions
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Re: Fully metal heatpipe case?

Sat Apr 02, 2016 3:41 pm

my goal is good heat dispersal with no fan :) if I use a fan then all manner of vented cases + heatsink would be far better.

I just don't like that case design. seems upside down and inefficient. that said, not much competition at the moment...

rzusman
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Re: Fully metal heatpipe case?

Sat Apr 02, 2016 4:11 pm

evilkitty wrote:If you are really that worried about heat, pick up some of those cheap stick-on heat-syncs for the ram and NIC controller, then use the case dankcushions suggested and bolt a NH-D15 CPU cooler on it above the cpu, but if that cooler cost too much you can just use a Hyper 212 (plus or EVO) plenty of overkill either way

the heat-sync will cool the entire case
Yes, but what does the heat synchronize to?

It's SINK.

dom
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Re: Fully metal heatpipe case?

Sat Apr 02, 2016 4:16 pm

dankcushions wrote:I just don't like that case design. seems upside down and inefficient. that said, not much competition at the moment...
I wouldn't say it's inefficient. It is the best passive cooler I have seen for the Pi.
Even with extreme overclocks I can't make a Pi3 throttle in that case.

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jahboater
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Re: Fully metal heatpipe case?

Sat Apr 02, 2016 4:55 pm

I liked this one
https://www.adafruit.com/products/1039
Discontinued, but looks like they are making a Pi3 version.
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evilkitty
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Re: Fully metal heatpipe case?

Sun Apr 03, 2016 12:03 pm

rzusman wrote:
evilkitty wrote:If you are really that worried about heat, pick up some of those cheap stick-on heat-syncs for the ram and NIC controller, then use the case dankcushions suggested and bolt a NH-D15 CPU cooler on it above the cpu, but if that cooler cost too much you can just use a Hyper 212 (plus or EVO) plenty of overkill either way

the heat-sync will cool the entire case
Yes, but what does the heat synchronize to?

It's SINK.
Room temperature, unless you are outside in which case it is the outdoor temperature
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