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Posted by nicksanspam on February 19, 2008, 10:09 pm

I'd estimate less than 1 day, after the first one.

Plus 1,200% overhead, if it's a government job :-)


Posted by Morris Dovey on February 19, 2008, 9:34 pm
nicksanspam@ece.villanova.edu wrote:

That's good, because if Escom's projected need for solar heating
panels also applies to solar water heaters, they'll only need
~200k/year (for the first five years).

Morris Dovey
DeSoto Solar
DeSoto, Iowa USA

Posted by J. Clarke on February 19, 2008, 11:11 pm
 nicksanspam@ece.villanova.edu wrote:

So figure the cost of that day's labor.  Are you having the parts
delivered to the site or to a central storage facility?  In the one
case you need to figure the shipping, the other the cost of the
facility amortized over the projected number of units.

And you've left out a means of running the pump when the power is off
(remember, this all started with rolling blackouts--during a blackout
the pump doesn't run) which is more cost.

And so far you're already 600 rand over budget just on the parts.

This is a gym used by the police in Angola
Lest you doubt its efficacy, this is an Angolan policeman (the smiling
black guy) http://metaljockey.smugmug.com/photos/198550796-L.jpg

Try to think like the people who put that gym together.

Those aren't my photos by the way, they came from
http://www.advrider.com/forums/showpost.php?pS70393&postcount9 .

to email, dial "usenet" and validate
(was jclarke at eye bee em dot net)

Posted by nicksanspam on February 20, 2008, 11:58 am

Pick 'em up locally.

This would heat 200 liters/day for 5 days with no electricity. And more
people using solar hot water likely makes for fewer rolling blackouts.

I didn't see any budget, just Frank's suggestion that a rooftop tank to
heat 50 liters of water on a sunny day "would cost no more than R 2000."


Posted by J. Clarke on February 20, 2008, 1:35 pm
 nicksanspam@ece.villanova.edu wrote:

OK, so how many man-hours does it take to pick them up locally in
Mpumalanga, and how much does that cost?  Can one man-day of driving
around get all the pieces, can they all even be found there or do you
have to take a run to Pretoria?

Uh, maybe I'm missing something, but if it runs "with no electricity"
then why is there an item "10 watt pump"?  As for more people using
solar hot water likely making for fewer rolling blackouts, if 2/3 of
the population is doing it then _maybe_, but if the cost is more than
3 years pay then you're not going to get that kind of penetration of
the market.

"The average South African doesn't have the R 2000.00 to
shell out, let alone R 12,000.00."

Looks to me like that 2000 Rand is already above what the market can

to email, dial "usenet" and validate
(was jclarke at eye bee em dot net)

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