Alan;<div><br></div><div>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.<br class="Apple-interchange-newline">
--<br>Dan Fink,<br>Executive Director;<br>Otherpower<br>Buckville Energy Consulting<br>Buckville Publications LLC<br>NABCEP / IREC accredited Continuing Education Providers<br>970.672.4342 (voicemail)<br><br><div class="gmail_quote">
On Mon, Dec 10, 2012 at 10:42 PM, frenergy <span dir="ltr"><<a href="mailto:frenergy@psln.com" target="_blank">frenergy@psln.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div>Alan,</div>
<div></div>
<div> 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.</div>
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<div> 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'rehaving to cool more in the summer, there is more
solar to do so.</div>
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<div> Will a DC-to-DC converter run a DC
freezer? </div>
<div></div>
<div> 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.</div>
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