[Vwdiesel] 2001 Golf TDi juice drain (fwd)

[Val Christian]

Ok, so I went off topic.  I can't post links on this email, but search "Photoresponse mapping of photovoltaic cells"  you'll get a product which maps
the response of the cell.

Radiant energy is measured (and calculated) for various regions.  For example,
I live in western NY, and our harnessable energy averages at 6 kW / m**2 / day.

If you were in Pheonix AZ, you would see about 9 kW / m**2 / day.

If you are in a cloudy area, more of the radiant energy received will be
in the IR band, and less in the visible band.  This is OK, because 
silicon tends to be very responsive to IR.  Doping silicon can modify
the responsiveness (ability to generate power) with different frequencies 
of light.  

Cell formulation as I used it, refers to the structure and composition of
the photovoltaic cell, where different attributes of the cell are 
traded so that performance, yield, cost, etc can be optimized for
the desired product.

If you find a solar contractor in you area, his engineer can probably tell 
you what average yield you will get in that region.  Winter days are shorter,
the sun is at a lower angle, and there may be more cloud cover.  These
affect available energy.

I'm sorry if I mumble jumbo'd you.  I used terms in my trade (not
solar energy) making a comment, in what is really a VW diesel list.
I was essentially trying to say that not all solar cells perform the
same, and that it was possible for properly formulated or designed cells
to perform well in the winter.  I live in Western NY, between two great
lakes, with lots of clouds, and even so, we have 2/3 the energy 
generating capability for a solar panel in Arizona.

BTW, for the record, the theoretical limit of crystalline silicon
photovoltaic cells is just under 29%, or about the chemical to 
mechanical efficiency of a VW diesel engine.

Email me if you have questions, and I'll try to do a better job of addressing
them, and pointing you to better resources than I.





A
> 
> Where do you find all this complex (to me) information? Cell formulation, radient energy tables, etc. (smoke and mirrors)
> ----- Original Message -----
> From: Val Christian <val at mongo.mongobird.com>
> To: vwdiesel at vwfans.com
> Sent: Thu, 20 Jan 2011 13:03:17 -0500 (EST)
> Subject: Re: [Vwdiesel] 2001 Golf TDi juice drain
> 
> Depends upon the cell formulation.
> 
> There are established radiant energy tables, with established (measured)
> spectral energy content.  
> 
> In my area, near the Graat Lakes, it's important to have a high IR 
> photoresponsivity, because we have more cloud cover than Topeka Kansas.
> 
> 
> 
> > 
> > In a message dated 1/20/2011 5:46:48 AM Pacific Standard Time, =
> > 
> > pmoretti at gmail.com writes:
> > 
> > > Rolf, you could try with one of these:
> > > =
> > 
> > > http://www.dealextreme.com/details.dx/sku.8506
> > > =
> > 
> > > It=B4s not expensive and it works, very useful if you don=B4t drive daily.
> > > =
> > 
> > > Pablo.
> > > =
> > 
> > > =
> > 
> > 
> >   Only problem with winter time solar is that it's nearly non-existent, at =
> > 
> > least =
> > 
> > in the northern US.  I have a couple 110W panels in the backyard.  The =
> > 
> > first =
> > 
> > year I had it set up (still not installed, just connected) from Nov to =
> > 
> > March, it =
> > 
> > produced 14 hours of electricity.  In addition, summer hours produce almost =
> > 
> > 
> > twice as much per hour as winter.  Not a lot of photonic energy going on =
> > 
> > here =
> > 
> > in the Winter!
> >     Loren
> > _______________________________________________
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> > Vwdiesel at vwfans.com
> > http://www.audifans.com/mailman/listinfo/vwdiesel
> > 
> 
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> -- 
> 1982 caddy 1.6L NA running
> 1967 convertible bug running
> 1980 caddy project 
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