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OK, ultimate cooling mod: A room (any HVAC or builders here?)

post #1 of 20
Thread Starter 
OK, the wife and I duked it out on what rooms in the house are going to be used for what - and I am relocating my office. Old location was on south side of house, but only got morning sun - so with blackout curtains, didn't get much heat. And when it did get hot, I just opened the windows in the evening and cross cooled the room from rest of house. (Room is maybe 10x15 feet.)

Moving to some new digs - about 300 sq feet. However, it is also on the south side of the house - and 1/2 of the rooms west and east walls are exposed to the sun. Also has pretty big windows (I can deal with those.) It is also over a garage - which gets hell hot in summer if doors are closed.

Long and short - the room gets warm in central summer months - July-Sept. On the upside, it has vaulted ceilings. and direct roof access. I also have below floor access to the whole room from the garage (going to be a pain to get to, garage ceilings are like 24 feet high, but I can get bigger ladders.)

I also have a house with an HOA - so I can't just start slinging window air conditioners out the windows (they are street side windows.) The house does not have central air (I live on the edge of Rainier Valley in Washington - doesn't really get hot enough for it..)

OK, now that we are done with the prelims..

I need to figure out how to keep equipment cool in summer. And while I am at it, might as well optimize for all seasons.

In the NE corner of the room (which is theoretically the coolest space) I can build a small server/computer closet - right on a 2'x2' window. Could probably make it 5' deep, 8 feet wide. Could drop a rack in there and move my punch panel from the garage. Would stud frame it (finish grade) and probably put in clear plexi panels (but the idea being I can turn it into a closet if we sell the house - thus making this room legally a bedroom.)

Summer Cooling:
Put a "put it in your window" style air-conditioner in the garage - high efficient. However, since garage gets hot, would need to get it air from somewhere else - I am thinking the crawl space - or through the crawl space out to the east side of the house (protected shade, always cool.) I could run drip lines outside easily.
Then I could remove the 2'x2' window and put a high flow exhaust fan in the 2'x2' window space. Put another high flow fan from the airconditioner in the garage, through floor into closet. Thus cool air flowing up from bottom, hot air out through top (the 2x2 window is about 6 feet off the ground.. Just a "daylight" window.)

GENERAL QUESTION:
Are there formulas to figure out how much cooling power, flow, etc is needed for X amount of space? Or just go off wattage of how much stuff will be in closet?
How hot do peripherals get (monitors, etc) that would not be in closet? Should whole room get some pop-up vents or something?


QUESTIONS:
General:
(1) Will a window style air conditioner work for this?
(2) Just inline house exhause fan - high flow bathroom fan?
(3) Do I need to vent the garage as well? (I am assuming adding this appliance to garage will heat it up even more.)
(4) Does blowing air that directly off an air conditioner into an enclosed space carry too much moisture?
(5) How much incoming cooler air would I need to keep condensors efficient? Or would the power a fan uses essentially cost more than having the air-conditioner works harder at cooling from using hot air in garage?
(6) Would I need help fans to move air up? Or do air units have enough push for this? (I can mount it right below floor.. or maybe 4 feet down to get slightly cooler air? Or really as far low as possible and add fan??)
(7) Will duct work on cold side of air conditioner need extra water-drip for condensation?

Winter Cooling:
Using same duct-work for the summer exhaust through the window, I would have a second fan that draws cold air in to closet. Then, using same duct work from garage, I would push hot air down into garage (which might be a nice psuedo heater for garage.)

No questions here really.
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post #2 of 20
Your air conditioner could be made more efficiently by turning it into a chiller. Then put the AC anywhere you want in the garage (hopefully where it'll have a constant supply of cool air) and run the hoses to another radiator/fan in the room that you want to cool. Basically a makeshift central air system. The only downfall is you'd have to go to wherever you put the AC to change the temps, etc.
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post #3 of 20
Thread Starter 
Once I find a temp range, should be OK. Just cooling a small place.

You say a chiller.. I am not quite getting it?
(Pipe freon up to room into radiator and a fan and just have garage act like a condensor?)
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post #4 of 20
Very Interesting!
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post #5 of 20
Hop you don't get a skunk in there,lol.
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post #6 of 20
chiller: chill water for a WC setup...others have tried the AC window unit that ducted the cold air to the pc...and it doesn't compare to how good WC setups run...but you can use the chiller and get a great combination performance.
post #7 of 20
Thread Starter 
Ahhh.. for PC cooling.

Well, I have way too much crap that will be in the closet to water cool it all. I need to create a cool space - not just cooling method for computers.

Although, if it works, maybe I will throw a second AC unit in the garage and see how many PCs I can water cool with it.

(But not until I finish my first water cooling project.. which will be months away... I can spend money on house, but wife makes it a bit harder on computer parts )
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post #8 of 20
well there is something called a potable air conditioner, it is about 3-4 feet high and instead of a unsightly air conditioner sticking out of the window they are set up to use a couple of small hoses to intake/outake air from and to the air conditioner and instead of dripping water they have a tank that just has to be emptied now and then. also a good arguement to get one is they can be placed anywhere a house also. well hers a link to a site but i would reccomend just gong to google and type portable air conditioner.
air-conditioners-america.com
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post #9 of 20
Quote:
Originally Posted by satansmurf
Ahhh.. for PC cooling.

Well, I have way too much crap that will be in the closet to water cool it all. I need to create a cool space - not just cooling method for computers.

Although, if it works, maybe I will throw a second AC unit in the garage and see how many PCs I can water cool with it.

(But not until I finish my first water cooling project.. which will be months away... I can spend money on house, but wife makes it a bit harder on computer parts )
No, not for PC cooling... But it's the same idea. Instead of running the sub-zero water through a waterblock, run it through another radiator. That would make the radiator sub-zero. Then put a fan on the radiator. Then you've basically got the evaporator temps of the water in that radiator, just like if you were to have the AC unit right there. The only temp loss would be through your pump (which shouldn't be much) and through the hoses (which would need to be insulated to keep from condensing water anyways).
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post #10 of 20
Thread Starter 
Hmmm..

I have no idea about the inner workings of an AC unit, but this is sounding interesting...

So an AC unit chills some kind of antifreeze (using condensor, special things like freon), which is pumped through a radiator, through which the air flows to cool?
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