----- Original Message ----- 
From: Lienesch 
To: Cathy Colwell 
Sent: Sunday, February 25, 2001 4:56 PM
Subject: Re: by noon, Wednesday, February 28th


The picture's are great!  The first picture illustrates why it is beneficial to have a continuous span of these awnings.  With only one module, the shadow would cover the window only around solar noon time.  With a continuous span across the south side of the building above each row of windows, the shadow would cover each window for a greater period of time and thereby keep more heat out and collect more energy to make electricity.  The drawings really look good.

Having 126 x 2 windows would be fine.  That would be about a 10kWp array.  That's respectable.  I'll look into hooking the modules together when I get back to work.  The Integra framed modules (as opposed to the Universal framed modules) are made with overlapping flanges that bolt together.  They have a very simple scheme to complete the wiring.  It will look cleaner.  The document E0013.pdf doesn't illustrate the frame very well.  I'll send you a picture that shows it better.  If you go with integra, you'll have a continuous sheet of PV.  You won't have to worry about spacing the modules; they'll all be bolted together.  Only doing the south-facing wall is a good idea.  
-Gary-


----- Original Message ----- 
From: Cathy Colwell 
To: Lienesch 
Sent: Sunday, February 25, 2001 3:11 PM
Subject: by noon, Wednesday, February 28th


The school's fax number is 1-904-226-0332

We have to have the letter incorporated into the site when we publish this Wednesday at 5 PM. Mainland's front office closes at 3 PM. So sometime Tuesday afternoon or Wednesday morning would be best.

Attached are three pictures from Justin's building that he is creating with a 3D software called Bryce. The final image will be ready Monday evening. He needs another 3-4 hours tomorrow to finish all of the floors. 
We worked from 9:30-1:30 --- a long time for a teen-ager to volunteer to work on a Sunday!

There will be a total of 264 windows on the south wall. So that is twice the 126 number you sent earlier. We are not casting any other walls of the building. I would appreciate your input on whether to continue the "window treatment" on any of the other walls.  

The first image is a front view on one window/awning combination; the second, a side view; and the third, a back view that won't be seen in the final scaled version. The red vertical lines show the channels for lifting and lowering the awning; the black plane in the PV module, the gray is the window - left one is in sunlight, right one in shadow. The colors will be corrected once he has all of the pieces finally assembled - the strange colors help him keep track of the layers.

The windows are now only 5 feet tall since in FL your windows can't be closer than 2 ft from the floor and we needed 35" above for the awning's winter position. 

I'll probably send you some more updates throughout the evening as more kids sign online and I work with them.

Cathy

--------------------------------------------------------------------------------


I'll continuing to review things and will get mentally prepared to send a letter estimating the price and endorsing the feasibility of the design.  By what date do you need the letter?

(1) an ball park price quotation (hypothetical),  and (2) that you can endorse our awning's feasibility. Here are two examples from past years. 

http://mainland.cctt.org/istf/product.asp
http://mainland.cctt.org/istf/summary.asp
http://mainland.cctt.org/istf2000/Page/Iexplorer/Components/Component2/Component2.htm