Re: [RMX:#] (ET) 48v ET

[robert winfield <winfield100 yahoo com>]

Dave,
If those panels are Amorphous Silicon, well, they
seriously deteriorate. 
My 1,376 watt array will only put out 1,054watts, a
24% deterioration in 6yrs. (but, they are only
warrentied 10 years but the manufacturer went out of
Biz anyway) 
Single crystal Si only goes down 1/2% a year.
I would only buy either Single or polycrystal panels.
they last a LOT longer. and are 3-4x more powerful for
the same covered area. 
I am trying to go "all-electric" as possible. 
There is a reason that only Uni-Solar makes amorphous
Si PV panels.
During Hurricane Isabel, I removed all the batteries
from my ET and was running a few lights and a small
radio but the surge current on the refrigerator was
too much, while muttering about the useless array on
the roof that i couldn't even recharge my ET batteries
with.
Next time the grid fails I want lots of battery backup
and the ET will help
(see, this message is vaguely related to ET's)
--- Dave Reuter <david reuter iavinc com> wrote:
> 
> Hi Robert,
> 
> I remember just a few weeks ago reading about a
> company that is tooling up
> to start producing  wafers that will reduce the cost
> of PV panels to 20% of
> the cost of todays panels. Apparently they have
> found a process that allows
> for a much lower manufacturing cost of the wafer.
> I'll have to see if I can
> find this article again. I think they said it is
> still a few years out
> before these panels get to the consumers due to
> testing and so forth. And
> one concern of theirs was will the final distributor
> past the cost savings
> to the customers.
> 
> Dave Reuter
> 
> 
> 
>                                                     
>                       
>              robert winfield                        
>                       
>              <winfield100@yaho                      
>                       
>              o.com>                                 
>                    To 
>              Sent by:                 
> elec-trak cosmos phy tufts edu      
>              elec-trak-bounces                      
>                    cc 
>              @cosmos.phy.tufts                      
>                       
>              .edu                                   
>               Subject 
>                                        [RMX:#] (ET)
> 48v ET                 
>                                                     
>                       
>              05/28/2004 09:04                       
>                       
>              AM                                     
>                       
>                                                     
>                       
>                                                     
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> 
> 
> 
> 
> Is a 48v ET doable? It would make things much
> simpler.
> I could yank out that dratted charger and squeeze 4
> batteries in that area. E12
> Obviously it wouldn't void the warrenty but would it
> fry the components with 33% more voltage. (visions
> of
> Tim "tooltime" breaking stuff)
> I am setting up Photovoltaics to do my charging
> (shortage of big wattage PV in the US, Germany, soon
> Italy and Spain are greening their countries with
> federal subsidies so our prices are up)
> 24 and 48 volts seem a lot easier to get components
> for
> 
> --- Anton Berteaux <krustyacres earthlink net>
> wrote:
> > also very much less efficient, and most of the
> > better quality (read
> > expensive ) electronic inverters are very close to
> > sine wave with less
> > distortion than a generator.
> > I would up the system voltage to 48, which allows
> > use of many off the
> > shelf inverters, and makes you go faster, too.
> > anton
> >
> > On May 27, 2004, at 10:46 AM, Dan Conine wrote:
> >
> > > A rotary inverter (in this case) is a 36VDC
> motor
> > which is run by the
> > > tractor. The motor is directly coupled to a
> 110VAC
> > generator.
> > >
> > > You get perfect sinusoidal power, vs. the
> > psuedo-simulated(modified
> > > sine wave) power from a solid-state inverter.
> > Simple, relatively easy
> > > to repair if you are living with a soldering
> iron
> > and a roll of magnet
> > > wire, and  civilization is gone.
> > > Disadvantage: brushes, bearings, armatures wear
> > out.
> > >
> > > Dan Conine
> > > 42
> > > E15, E10
> > > Belgium,WI
> > >
> > >
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> > >
> > >
> > Warm globally,
> > Drive locally
> >
> >
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> 
> 
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