Alan; The ceiling fan problem is super tricky, and I'd be interested in what others say. The DC ones I used to install (and have here at my place) draw only 5 watts at low speed, and 10 watts at higher speed, with enough circulation to be pretty effective. Might be worth a small DC power supply. Mine have been on continuously, blowing down in the winter and up in the summer, for over 10 years now! Wouldn't even know where to get them anymore. -- Dan Fink, Executive Director; Otherpower Buckville Energy Consulting Buckville Publications LLC NABCEP / IREC accredited Continuing Education Providers 970.672.4342 (voicemail)
On Mon, Dec 10, 2012 at 10:42 PM, frenergy <frene...@psln.com> wrote: > ** > Alan, > > It seems like a full load analysis is a requirement for off-grid. > If you're simply encouraging a customer to do a load analysis you may as > well hand them a tail and hope they find the donkey. Granted it's easy to > slide on it as it represents a great deal of time and most customers don't > really "get it". It's the most difficult part of off-grid. > > Fairly large?.....Hmmm, 20-25 CF? I would figure 1.7 KWhr/day. > With a freezer being a constant load and winter having less solar, of > course your idea of having the freezer outside would help. Though > you're having to cool more in the summer, there is more solar to do so. > > Will a DC-to-DC converter run a DC freezer? > > Yes, I think 55 watts is a good number for the "typical" 48", > slow-med speed AC ceiling fan. They certainly have their place but there > goes another 1.3 KWhrs/day as people tend to leave them on all the time. > >
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