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posted to rec.boats
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First recorded activity by BoatBanter: Sep 2012
Posts: 9
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Oh, and for those who believe FOX when they say....
Eisboch wrote:
wrote in message ...
On Mon, 03 Sep 2012 15:46:15 -0400, Wayne.B
wrote:
On Mon, 03 Sep 2012 13:07:01 -0400, wrote:
On Mon, 3 Sep 2012 07:59:29 -0400, iBoaterer wrote:
Solar doesn't work? Wind energy doesn't work? Nuclear doesn't work?
Yep,
you are insane all right.
They "work" they just don't make economic sense.
===
I'm thinking of doing a small scale solar electric project just for
grins since I've got a nice south facing roof and plenty of that
famous Florida sunshine.
The price of panels is now down to about $1/watt if you buy on EBAY.
System costs for batteries/inverters/wiring/installation no doubt more
than double or triple the panel cost but I don't know how much.
At what price point can we get a decent ROI assuming 10 cents a KWH
from LCEC and a 12 to 15 year system life?
I just looked at that Ebay ad. They are a pretty good deal at a buck a
watt.
The real plan these days is to ditch the whole battery thing and use a
grid tie inverter. That is really the only way to get the rebates too.
It is worth looking at if the $1 a watt thing is true.
My first PV project will be a solar pool pump.
The other issue is finding a roofer who will guarantee a roof with
collectors on it.
My pool collectors are on a pan roof over a shelter I really don't
care that much about. I am out of real estate there and I don't even
have as many collectors as I want to heat the pool.
It does a good job on the spa tho.
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I fooled around with a home-made pool heater in Jupiter, Florida. I
coiled about 200 feet of 3/4" ID black PVC tubing onto a huge plywood
topped frame that I also painted black to increase the total
emissivity. The frame was angled to get the most direct exposure to
the sun. Put a small, half horsepower sump pump in the pool and ran
it all day during daylight hours, cycling water from the pool, through
the pvc and back to the pool. I had thermocouples on the PVC inlet
and outlets to measure the delta T across the PVC. During the day it
often raised the water temperature about 2-3 degrees as measured at
the outlet. If I shut the pump off for an hour or two, the water in
the PVC got hot enough to scald you when the pump was turned back on.
Problem was, this was during the winter months and anything gained
during the day was quickly lost at night due to evaporation. It never
heated the pool. Gave up and installed a 150,000 BTU electric pool
heater. That did the trick.
I'd hate to see that electric bill. Let me guess - an extra $400/month
in the winter?
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