Beyond water cooling. (Was Re: Peltier devices for cooling)

[harrybissell at prodigy.net]

Actually Bar refrigerators are not a problem for active heat sources unless you totally overwhelm them... We used one for a Lab temperature chamber (for  a chemical process, and added active heaters to stabilize the interior temp. The refrigerator takes up most of the load of cooling, and the secindary loop (fan, heater, thermistor... bucks the primary loop to get faster and more stable response. I think I could throw a couplt hundred watts at will...

You are right... you don't need it 40 degrees... unless you don't want your milk to spoil...

H^)


 ---- On Feb  9 "Grant Richter" <grichter at execpc.com> wrote: 
> I don't think a bar refrigerator was designed to deal
> with active heat sources. It's one thing to take
> a bunch of beer cans down to 40 F and hold them
> there with only leakage from the outside. Or deal
> with a continuous 50 (25% of 200) watt heater inside.
> 
> Second Law of Thermodynamics. It will take much more
> than 50 watts of cooling to get rid of 50 watts of heat.
> 
> Conversely you wouldn't want your computer at 40 F so
> you could set it at the highest setting. It might be able
> to keep up.
> 
> (1. You can't win. 2. You can't break even. 3. You can't
> get out of the game. The three laws of thermodynamics
> as sung by Michael Jackson in The Wiz)
> 
> ----------
> > From: Batz Goodfortune <batzman at all-electric.com>
> > To: synth-diy at mailhost.bpa.nl
> > Subject: Beyond water cooling. (Was Re: Peltier devices for cooling)
> > Date: Wednesday, February 09, 2000 8:41 AM
> > 
> > Y-ellow Y'all.
> > 	Ok I'm out on a limb here but this is something I've been thinking about
> > doing for a long time. There is a big hurdle to overcome but I'll get to
> that.
> > 
> > I saw as a joke, on some site or other, about a guy who stole his
> > neighbor's fridge to run his over-clocked machine in. Ok Har har very
> funny
> > etc.
> > 
> > But then I got thinking. A mate of mine had this little bar fridge. It
> was
> > quite quiet. Certainly a lot quieter than my server with 2 main fans, CPU
> > fans, A bunch of Hard drives etc.
> > 
> > So I got to thinking. These little bar fridges are about the right height
> > for a server case. In fact you could probably fit 2 servers side by side.
> > Maybe on little slide-out runners etc. And the added advantage is that
> even
> > if the fans were running inside, it pretty much dampens the sound with
> all
> > that insulation round it. You could go so far as to mount all the drives
> in
> > the door of the thing. Or cut holes so they can poke through.
> > 
> > And of course, over-clock to your heart's content. :)
> > 
> > The only problem is that of Frost. I don't know enough about
> refrigeration
> > to know how to re-design a small fridge so that moisture didn't
> accumulate
> > and do damage. But you get the idea. You could keep the computer's
> > environment on ice as it were. And of course the fridge would only have
> to
> > be on while the computer(s) were on. 
> > 
> > My figuring is this. Find a cheap second hand bar fridge (but a quiet
> one)
> > and then cut holes in it or what ever it takes to keep it from frosting
> up.
> > Then bolt the computers inside it some how and shove it in the corner
> where
> > the server would have stood anyway. It's the kind of idea that sounds
> less
> > and less silly the more you think about it.
> > 
> > Anyone known anything about refrigeration?
> > 
> > Be absolutely Icebox.
> > 
> >  _ __        _                              
> > | "_ \      | |         batzman at all-electric.com
> > | |_)/  __ _| |_ ____       ALL ELECTRIC KITCHEN               
> > |  _ \ / _` | __|___ |  Geek music by geeks for geeks
> > | |_) | (_| | |_  / /   
> > |_,__/ \__,_|\__|/ /    
> >                 / ,__   http://all-electric.com
> > Goodfortune    |_____|