How square feet of surface are on your vehicle that faces the sun? The sun provides under IDEAL conditions approx 1000W on 10ft2 of surface at 100% efficiency. The best 40% efficient solar cells run at $1000.00per watt. So that's maybe 30ft2 on a large vehicle to obtain a whole screaming 400W after spending $1.2 million. Or going with standard photovoltaic cells with 15% efficiency, the cost will be $2250 to obtain 150W. Now wait for the 1st parking lot door ding to ruin 10% of the total capacity. 150W will run the radio, dash lights and HVAC fan. Next somebody is going to suggest storing the solar energy while the vehicle is parked. There still isn't enough power developed to amount to anything useful. Then how are you going to store the energy without adding weight, complexity and price? You are going to willingly pay an extra $25,000 on a vehicle to save $1000.00 over it’s lifetime? Hate to burst your bubble but IT DOESN'T WORK. You will save more for no expense. Just by making certain the tires are aired up. And walking into the restaurant rather than using the drivethrough.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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