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(Ehren's Elegant Chicken Scratch)
(Dan's Dusty Tomes of Lore)
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==Dan's Dusty Tomes of Lore==
==Dan's Dusty Tomes of Lore==
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*Just the other day
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**Helped wrangle the solar hot water heater that Charlie had squirreled away in the woods onto his truck and then onto sawhorses in our driveway. It was exceptionally nasty with ants and other crawly critters inhabiting one half and who-knows-how-old water hanging out in the other. Colin and I stripped off the insulation where the damage was with a machete and no apologies and marveled in the neatness of the shiny aluminum box before us. For all the wear on the insulation the inside looks quite nice and serviceble. Even in low sun you can feel the heat radiating from it.
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**I feel better about this arrangement now.
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**Officially have started dreaming about solar panels and grid-tying. I am told that this is normal.
*More recently
*More recently
**Completed hot water labs with Ehren and Kate. We devised a short experiment that estimated the average shower temperature to a reasonable degree of accuracy. Those results are posted. Kate and I then brainstormed on possible days to get together and estimate the average use per person of hot water. We ended up estimating those on our own.
**Completed hot water labs with Ehren and Kate. We devised a short experiment that estimated the average shower temperature to a reasonable degree of accuracy. Those results are posted. Kate and I then brainstormed on possible days to get together and estimate the average use per person of hot water. We ended up estimating those on our own.
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***Have devoted only little outside time into this project, but am unsure how to spend more time. Wonder if this might come back to bite me.
***Have devoted only little outside time into this project, but am unsure how to spend more time. Wonder if this might come back to bite me.
***Garlic harvesting pays well
***Garlic harvesting pays well
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-
 
*Sometime
*Sometime
**Looked into Line Loss re: barn and solar panels. I learned that most people call it wire loss and it has nifty tables that illustrate the relationship between wire thickness, length, and amperage transferred. I got confused with the voltages listed on the catalogue. The modules have voltages such as 16.3 that are significantly above the system voltage (which I assumed was twelve as the introduction to the products said it was) I was informed later by Charlie that voltages are extremely flexible, that the voltages listed were the peak (possibly unattainable) performance and that parallel and serial wiring will be covered in greater depth later. This put my mind at ease. From what I know now I'd venture a guess that we'll need about 360-400 feet of 4 gauge wire (approximately $700 according to unitedcopper.com) for a 48DCV system transmitting about 10 watts or 480 watts though we'll probably be running most of the time at lower than that. What I do know for sure is that we have about 45'x13' of space to work with on the barn roof. That's enough for 26 of the largest models of modules (about $15,500 according to realgoods.com)
**Looked into Line Loss re: barn and solar panels. I learned that most people call it wire loss and it has nifty tables that illustrate the relationship between wire thickness, length, and amperage transferred. I got confused with the voltages listed on the catalogue. The modules have voltages such as 16.3 that are significantly above the system voltage (which I assumed was twelve as the introduction to the products said it was) I was informed later by Charlie that voltages are extremely flexible, that the voltages listed were the peak (possibly unattainable) performance and that parallel and serial wiring will be covered in greater depth later. This put my mind at ease. From what I know now I'd venture a guess that we'll need about 360-400 feet of 4 gauge wire (approximately $700 according to unitedcopper.com) for a 48DCV system transmitting about 10 watts or 480 watts though we'll probably be running most of the time at lower than that. What I do know for sure is that we have about 45'x13' of space to work with on the barn roof. That's enough for 26 of the largest models of modules (about $15,500 according to realgoods.com)

Revision as of 21:05, 23 July 2006

Contents

Colin's Cosmic Contemplations

Kate's Killer Thoughts and Reflections

Discovery: Having a job that says that you are "on duty 24 hours a day" does not lend itself to getting a lot of classwork done. oops.

Dan's Dusty Tomes of Lore

Ehren's Elegant Chicken Scratch

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