North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: WSJ: Big tech firms seeking power
Mecahnical work converts to heat in the very end. Not _mostly 100%_ but _absolutely 100%_. Except if it is cell station which inducts energy into the radio wawes, and minus some light coming out of the building (which removes energy as well). ----- Original Message ----- From: "David Lesher" <[email protected]> To: "nanog list" <[email protected]> Sent: Saturday, June 17, 2006 4:08 AM Subject: Re: WSJ: Big tech firms seeking power > > > Speaking on Deep Background, the Press Secretary whispered: > > > > > > > > > who insist on perpetuating that most medieval of units... the BTU. > > > > Well, if you do away with that you can continue with the "mile" as well, > > then lose the pounds and yards and gallons while you're at it. > > Great! Let's get started... > > > What is the amount of energy coming out of a server as heat as opposed to > > what you put in as electricity? My guess would be pretty close to 100%, > > Actually, it's closer to 100.00%. Most is heat directly, but some > very small amount is mechanical work on the HD's, etc... and that > is then room heat as the drives radiate heat to the room. > The LED's emit photons that then heat the room, and so forth. > > The only energy that 'escapes' the building would likely be > outgoing copper & glass data connections....but wait, there's > incoming of THOSE too. [But... if a server farm, there's more > bits out than in...] > > > In one of our data centers we use community cooling, we get 4 C (I think > > it was approx 4 C) degree water and we're required to heat it at least by > > 8 C before we return it, this is then used in the community power plant to > > produce hot community water, and this process I've been told is quite > > effective. Any thoughts on this? Guess it doesn't work in the boondocks > > though... > > > I guess none of this makes sense in the southern part of the US, but > > further up north where houses actually need heating and not cooling most > > of the year, are things like this done? > > Almost never. In the immediate focus of the US it's cheaper to > import foreign oil/mine & burn coal than to invest capital to do > something more efficiently. > > [Hmmm, I wonder what the current power price is in the > Niagara River Valley? Their cheap power was why so many steel > mills/aluminum smelters/etc located there eons ago. Plus, there's > copious H2O cooling and I have to think there are massive buildings > available in the area just for paying the back taxes...] > > [This has drifted way OT and I'm out of here...] > > > -- > A host is a host from coast to [email protected] > & no one will talk to a host that's close........[v].(301) 56-LINUX > Unless the host (that isn't close).........................pob 1433 > is busy, hung or dead....................................20915-1433 >
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