Hi G........, Did you read my old: Cruisers & Sailing Forums >
The Fleet >Multihull Sailboats Electric main drive(s) #320 posting: On how
that kind of energy is collected from the panel??
Hi guys and gals,
I just got back from visiting DBK solar last night after spending the day
there. They really won't have product out the door until the first part of
next year.
The unit I tested looks good, weighs about 50 lbs and is
soundly
built. (I used to build conventional panels myself back in the early 90's)
the first test was done at 10 am in the shade.
The warehouse faces west, the
panel was rolled up to about half
in and half out of the warehouse door with
the sun at that time still in the east creating a shadow from where we were,
out into the parking lot about 30 ft away.
I was surprised they were going
through the demonstration anyway! 
They hooked up the panel to a battery and an inverter.
Putting a tester on the battery I found it was at 12.7 Volts.
Putting it on the panel I found it was putting out 166.6
Volts.
This was going into the inverter and into that we plugged in 2- 1875 watt
hair driers that ran full blast.
In the afternoon at 3:00 pm the test was repeated in full
sun. The panel overloaded the inverter putting out 225.6 volts.
They proceeded to cover the panel with a blanket about
2/3's. That still ran the hair driers at full blast. It seems the panel will
easily put out over 4000 watts in full sun
and over 3500 in the shade.
It
will put out some even at night. (short wave radiation is converted as well)
They are guarantying 3000
watts output at 20 years down the line.
More later. Steve Merrill.
Now additionally:
I used to manufacture conventional solar panels back in the early 90's, so I
pretty much know what I'm looking at.
DBK builds their panels using 5 layers
of cells as I remember.
Each layer captures ever shorter radiation passing through
the previous layers, so sun 'light' as
we see it is only the first
harvested.
They get much more energy from the shorter
wavelengths
consequently even when shaded.
This is why all the pros scream 'impossible' to get
that much power.
They only reckon on the visible light spectrum of energy
available as collected with conventional panels.
The guys at DBK know what they've got, so pretty much
laugh at the criticism.
They invited them to come and look and measure but funny
thing, none come.
Hope this helps, Steve Merrill (and no, I don't work for them)
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