Prev: Are DDR and DDR2 SODIMMs interchangeable?
Next: bt voyager 2100 share printer
From: GT on 30 Jan 2006 06:46
"badgolferman" <REMOVETHISbadgolferman(a)gmail.com> wrote in message
news:xn0ehqb0muandxt006(a)news.readfreenews.net...
> http://www.tomshardware.com/2006/01/09/strip_out_the_fans/
>
> Common sense dictates that submerging your high-end PC in cooking oil
> is not a good idea. But, of course, engineering feats and science
> breakthroughs were made possible by those who dared to explore the
> realms of the non-conventional.

But the oil will still heat up, just fairly slowly. Problem is that when it
gets too hot, there is no cooling and it will take ages to cool down before
you can power up again. Run a fast game for a few hours and the oil will be
about ready for chips (the potato kind)!


From: MCheu on 30 Jan 2006 19:17
On Mon, 30 Jan 2006 11:46:31 -0000, "GT"
<ContactGT_remove_(a)hotmail.com> wrote:

>"badgolferman" <REMOVETHISbadgolferman(a)gmail.com> wrote in message
>news:xn0ehqb0muandxt006(a)news.readfreenews.net...
>> http://www.tomshardware.com/2006/01/09/strip_out_the_fans/
>>
>> Common sense dictates that submerging your high-end PC in cooking oil
>> is not a good idea. But, of course, engineering feats and science
>> breakthroughs were made possible by those who dared to explore the
>> realms of the non-conventional.
>
>But the oil will still heat up, just fairly slowly. Problem is that when it
>gets too hot, there is no cooling and it will take ages to cool down before
>you can power up again. Run a fast game for a few hours and the oil will be
>about ready for chips (the potato kind)!
>

Not likely. The kind of heat you'd need would melt everything. What
you'd likely get is that the oil will get luke warm. Just hot enough
to help the oil along in getting rancid. That oil is gonna need to be
changed fairly frequently or you're going to need a lot of Fabreeze.
32L of rancid cooking oil isn't easy to get rid of.
---------------------------------------------
Thanks.


MCheu
From: kony on 31 Jan 2006 05:07
On Mon, 30 Jan 2006 11:46:31 -0000, "GT"
<ContactGT_remove_(a)hotmail.com> wrote:

>"badgolferman" <REMOVETHISbadgolferman(a)gmail.com> wrote in message
>news:xn0ehqb0muandxt006(a)news.readfreenews.net...
>> http://www.tomshardware.com/2006/01/09/strip_out_the_fans/
>>
>> Common sense dictates that submerging your high-end PC in cooking oil
>> is not a good idea. But, of course, engineering feats and science
>> breakthroughs were made possible by those who dared to explore the
>> realms of the non-conventional.
>
>But the oil will still heat up, just fairly slowly. Problem is that when it
>gets too hot, there is no cooling and it will take ages to cool down before
>you can power up again. Run a fast game for a few hours and the oil will be
>about ready for chips (the potato kind)!


The oil now has a few cubic feet of surface area. Sure it
will get hotter than ambient but the hotter it gets, the
faster the rate of heat radiation from the oil to the
surrounding air. That may be enough to allow passive
cooling.

If it's cool enough to be stable while running, it is
likewise cool enough to power on again after having been
turned off. It is impossible for that volume of oil to be
hot enough to fry chips, though that doesn't necessarily
mean it's definitely cool enough for "any" combination of
parts... like anything else, temp measurements should be
taken.

Not that it's a good idea, it looks like a silly novelty to
me.
From: GT on 31 Jan 2006 05:40

"kony" <spam(a)spam.com> wrote in message
news:cgdut1t28t8pv3bimlbl5h5e3lie5ag7rh(a)4ax.com...
> On Mon, 30 Jan 2006 11:46:31 -0000, "GT"
> <ContactGT_remove_(a)hotmail.com> wrote:
>
>>"badgolferman" <REMOVETHISbadgolferman(a)gmail.com> wrote in message
>>news:xn0ehqb0muandxt006(a)news.readfreenews.net...
>>> http://www.tomshardware.com/2006/01/09/strip_out_the_fans/
>>>
>>> Common sense dictates that submerging your high-end PC in cooking oil
>>> is not a good idea. But, of course, engineering feats and science
>>> breakthroughs were made possible by those who dared to explore the
>>> realms of the non-conventional.
>>
>>But the oil will still heat up, just fairly slowly. Problem is that when
>>it
>>gets too hot, there is no cooling and it will take ages to cool down
>>before
>>you can power up again. Run a fast game for a few hours and the oil will
>>be
>>about ready for chips (the potato kind)!
>
>
> The oil now has a few cubic feet of surface area. Sure it
> will get hotter than ambient but the hotter it gets, the
> faster the rate of heat radiation from the oil to the
> surrounding air. That may be enough to allow passive
> cooling.

You assume some circulation of the oil and that does not seem to be evident.
The only circulation will occur through the heat rising and radiating and
will be slow, so the oil in the centre near the CPU and GPU will be hotter
than the outside. I don't know what amount of heat the CPU and GPU will be
putting out, but I'm sure someone (probably kony, cos he's clever) will be
able to work out how quickly the oil will heat up and how quickly it would
cool and therefore derive a stable temperature (terminal temperature?).
Anyone know the specific heat capacity of cooking oil?

If this temperature (or the predicted temperature around the CPU and GPU) is
lower than the threshhold for problems in the CPU or GPU, then this solution
looks like it would actually work!!

> If it's cool enough to be stable while running, it is
> likewise cool enough to power on again after having been
> turned off. It is impossible for that volume of oil to be
> hot enough to fry chips, though that doesn't necessarily
> mean it's definitely cool enough for "any" combination of
> parts... like anything else, temp measurements should be
> taken.
>
> Not that it's a good idea, it looks like a silly novelty to
> me.

I agree, but as it was posted, I feel obliged to discuss it!

So it would appear that oil is not conductive then? What about the corrosive
properties - anyone?


From: kony on 31 Jan 2006 10:36
On Tue, 31 Jan 2006 10:40:09 -0000, "GT"
<ContactGT_remove_(a)hotmail.com> wrote:


>> The oil now has a few cubic feet of surface area. Sure it
>> will get hotter than ambient but the hotter it gets, the
>> faster the rate of heat radiation from the oil to the
>> surrounding air. That may be enough to allow passive
>> cooling.
>
>You assume some circulation of the oil and that does not seem to be evident.

No, I assume heat transfer even if it didn't circulate, but
on the other hand, it will circulate because that's what
heated liquids do. Put a pot of water on the stove, turn
the burner on and leave it alone... did the water at the top
get hot? Why? Passive circulation is not "as" effective,
but if there is enough margin, it is enough.

>The only circulation will occur through the heat rising and radiating and
>will be slow, so the oil in the centre near the CPU and GPU will be hotter
>than the outside.

Yes, some, but so what? Same goes for air in an air-cooled
system and yet, they manage to stay cool enough.

>I don't know what amount of heat the CPU and GPU will be
>putting out, but I'm sure someone (probably kony, cos he's clever) will be
>able to work out how quickly the oil will heat up and how quickly it would
>cool and therefore derive a stable temperature (terminal temperature?).
>Anyone know the specific heat capacity of cooking oil?

Tom's already demonstrated that the system ran.What useful
purpose is there in this? Seems more like triva than
anything else but I dont' think all the details would be put
in next year's edition of Trivial Pursuit. I suppose if you
packed as much hardware as physically possible into the
case, it might run too hot but this is why it's an experment
and temps will need be taken. Even knowing the absorbtion
rate of the oil we can't continue to a final conclusion
because there's also the room ambient temp, the conductivity
of the case walls, whether the top stays on the case or
not... lots of variables. In the end, I don't plan to build
such a system so there is no need to try to come up with
some set of charts that would encompass all variables.

On the other hand, you could just email the author of the
article and ask. He'd probably be pleased that someone was
so interested in it.


>
>If this temperature (or the predicted temperature around the CPU and GPU) is
>lower than the threshhold for problems in the CPU or GPU, then this solution
>looks like it would actually work!!

.... so? Work doesn't mean it has any benefits.
As I"d menitoned in another post, the PSU is still above the
oil and it's fan must still run... that is the larger % of
system noise if the system were otherwise optimally set up.

What it'll do is make a big mess, maybe foul the capacitors,
maybe leak, and smell horrible. If you want to use oil I"d
suggest some other type and a bit more time to seal up the
case than the sloppy job on the one in the THG video.



>So it would appear that oil is not conductive then? What about the corrosive
>properties - anyone?

In general oil is not particularly corrosive or conductive
but it might depend on the type and the impurities in it, as
well as the materials in the system (components). I doubt
THG used vegetable oil for any reason other than that it was
common and cheap.
First  |  Prev  |  Next  |  Last
Pages: 1 2 3
Prev: Are DDR and DDR2 SODIMMs interchangeable?
Next: bt voyager 2100 share printer