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As noted, there are clip on ampmeters - would have to measure everything on a power cord in the room (monitor, computer - celling lights would be tough but could use the wattage on the bulbs). Typical residential air exchange rates vary with season, but only about 0.5-0.6 exchanges per hour without central heating/air conditioning. This plus a small room with computer, monitor, and lighting could equal significant changes with much lower energy consumption. I'd guess 6-15oF for a typical residential room. I suspect you're right about venting to the outside (window fan might help a lot by increasing exchange rate ?) David Loooney Tracy R Reed wrote: > At work last month we had half of our servers go down because a power > strip which was supposed to have blown its breaks at 15 amps blew it at > half that. At home my computer room is already getting quite warm and it > is barely summer. The computer room has always been the hottest part of > the house yet I need it to be the most comfortable because that is where > I spend most of my time and need to be able to think. So this has me > thinking about a few things... > > Can anyone recommend a simple device which can measure the amperage > used? Preferably without having to place it inline (I think some can > measure the EMF) but inline is doable if that is all there is. > > Let's say a computer draws 1 amp. What is the rule on how much heat this > adds to a room? Any way to calculate how many degrees it might raise the > temperature of the room? I think we can assume that pretty much all of > that 2 amps turns into heat. I know power for electricity is voltage > times current so that would be 110 volts times 1 amp which is 110 watts. > A watt is 1 joule of energy per second. So at 110 watts I am dumping 110 > joules of energy per second into the room. If I run the computer for an > hour I have added 396000 joules of energy to the room. If the room is > 10x10x8 and we assume no outside circulation how fast will the room heat > up? The goal being to see if that it is reasonable that the computer is > making this room noticeably warmer (say, 5 degrees or more warmer) than > it would be without the computer. > > Does anyone think it would accomplish much to somehow vent the hot air > coming out of my computer to the outdoors instead of into my room? It > just struck me that it must be more efficient to vent the hot air > outdoors and cool the ambient air than to try to cool the hot air from > the computer. I am surprised more datacenters are not trying to do this. > And if it does make sense to do this (I strongly suspect that it does) > has anyone seen kits or cases for this? I think I might go down to the > hardware store tomorrow and buy some of that flexible plastic dryer vent > hose to attach to the computer and then hang out the window. But how to > attach it to the back of the case? Hmm...just had an idea: I could get > one of those metal fittings that go on the inside of the wall that the > dryer hose attaches to, drill four holes in it, and put the bolts that > hold the fan in place through it and then through the case and the fan. > Yep, a run to the hardware store is definitely in order. I'll let you > know how it goes. > -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.2 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFEgx4ob357MXAYfs8RAp2EAJ9eGFmYJZ30OV/NXyQEY2iUN1uUAQCdGPKj kj+5wVH90z1T6zJ7Gt/C6D0= =Ynvh -----END PGP SIGNATURE----- -- [email protected] http://www.kernel-panic.org/cgi-bin/mailman/listinfo/kplug-list
