[mythtv-users] OT Watercooling was Gigabit switch
fairlane at springcom.com
Thu Aug 3 23:53:21 UTC 2006
6 pumps is a waste of energy and will gain you nothing. Single pump into a
manifold, port the manifold off to each heatsink. Return to tank. If you
have problems with balance, you could add 1/2" valves to each line, and
restrict flow as needed. The longer the fluid stays in the heat exchanger,
the more Q (heat exchange) takes place. So restrict it to slow it down.
For cheap pumps, look for auxilliary water pumps on luxury cars. Bosch
and Cooper are two makes of pumps that run on standard 12V supplies,
and both use magnetic drive so no shaft seals or anything to wear out.
The common pumps are about 5-10 GPM. I use a pump like this on my
design at work to cool a 450HP supercharged engine airflow with a water to air
intercooler, so 5 GPM ought to be plenty... :)
On Thursday 03 August 2006 07:20 pm, Dean Collins wrote:
> Yeh I just realised it is the old design that is still up on the site.
> I'll change it tonight.
> Some background to the project. I work for myself from home so currently
> I have 6 servers sitting in a 48RU rack next to me.
> The noise was driving me nuts so as an interim I experimented with water
> cooling by buying 2 x Zalman reserators. I used zalman cooling blocks
> for cpu, gpu and northbridge on 2 of the servers.
> One of the additional items I bought were SilentStar hard drive coolers,
> not only do they take care of heat from the hard drives but they also
> take care of the noise problem.
> The other addition that I intend to implement that I don't currently
> have is 6 water cooled power supplies. I've been looking at the
> Alphacool 500w units but keep hoping they are going to fall in price,
> currently $279 each.
> So now that I'm sold on how the concept works and is it worth the money
> I started looking at how I could cool all 6 servers.
> Standing 2 columns of 3 reserators on top of each other wasn't an option
> for both stability and ease of access to the rear of the 20" deep
> servers so the concept I've designed is for a side mounted water tank
> which will cover the entire left side of my rack on the outside.
> It will have 6 pumps externally mounted in a vertical fashion aligned
> with the server it will be cooling (but behind a matching cover) the
> pump will feed through the rack side panel into a quick release clip in
> the back of the server for easy removal when I need to pull them out.
> Each pump will feed from the total volume of water and more or less work
> independently it's just they share the same massive reservoir. Piping
> from the pump, to the cpu, gpu, power supply, northbridge than back to
> the pump into the reservoir.
> Once these are all installed I should have 6 totally silent high powered
> servers where the noisiest part will be the typing of my keyboard :)
> > -----Original Message-----
> > From: mythtv-users-bounces at mythtv.org [mailto:mythtv-users-
> > bounces at mythtv.org] On Behalf Of Dawson, Guy
> > Sent: Thursday, 3 August 2006 11:18 AM
> > To: Discussion about mythtv
> > Subject: [mythtv-users] OT Watercooling was Gigabit switch
> > > -----Original Message-----
> > > From: mythtv-users-bounces at mythtv.org
> > > [mailto:mythtv-users-bounces at mythtv.org] On Behalf Of Dean Collins
> > <snip>
> > > Having said that I know my rack gets a little on the warm
> > > side (I'm about to build an external water cooler for my 48RU
> > > rack in case anyone wants to take some ideas on this project
> > > www.collins.net.pr/links/watercooling )
> > >
> > >
> > >
> > > Cheers,
> > > Dean
> > Dean,
> > Your reference to water cooling piqued my interest. I took a look at
> > the link, but that didn't tell me a lot.
> > I assume the sketch is of something a bit like a domestic hot water
> > radiator that you're going to work in reverse.
> > Am I close?
> > Guy Dawson
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