Solar fin estimate

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Jeremy

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Mar 22, 2010, 7:39:01 PM3/22/10
to Engineers Without Borders, UNM
I did a calculation based on Elena's thero analysis.

Some givens:
Taking Elena's number of 1.5 kW on page six, I'm assuming this is an
average for the day so 36kWh for the day.
The radiance in Albuquerque is an average of 5.7 kWh/m^2/day from
nrel.gov.
Efficiency should be about 45% says Dr. Mammoli (it's a complicated
calculation that I won't go over here.)
So 2.6 kWh/m^2/day goes into our panel
Solar Fins are $64/m^2


We want about 26 kW/day (a little less than all our need so we don't
need to dump heat and to keep the math easy)

We therefore need 10m^2 of solar fin for $640.00 (actually this is in
Canadian currency so 640 whackabillies is $655 + shipping)

We then need to build the boxes, add the plumbing and the glass to put
on top. I'll follow up later with that. But now I think we have a
good estimate of the solar fins at least.

So when's the party?

Jeremy

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