Thanks Brad, I missed that reply. Revising based on that the numbers you have, then you're still looking at 400KG+ of batteries in the absolute best possible case..
Singer On Wed, Nov 17, 2010 at 3:17 PM, Brad Knowles <[email protected]>wrote: > On Nov 17, 2010, at 1:40 PM, Singer Wang wrote: > > > - assuming a 10KW load which is not unreasonable given HVAC included and > a dozen servers > > There's your first false assumption -- Go back to his second message. His > total load is less than 20A. HVAC has been measured at roughly 115VAC/10A, > and everything else at ~115VAC/8A. > > That makes the output results a lot easier to deal with. > > > - Lead-Acid has an energy density of ~40Wh/KG > > - so you need at least a 250KG battery per hour > > - at 8 hours you're looking at at least 2000KG alone for the battery (at > least) > > > > I'd recommend a battery + generator solution.... > > Again, go back to his second message -- there is absolutely no possibility > of being able to install a generator of any kind. > > -- > Brad Knowles <[email protected]> > LinkedIn Profile: <http://tinyurl.com/y8kpxu> > >
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