Today we took a trip to AIL Research and Princeton University to visit Dr. Eric Teitelbaum MFS class of 2008 and learn about his research on radiant heating, cooling, and heat pumps. He showed us a model of a heat pump system (shown above) and discussed how it works. The electronics in the system...
Continue readingSolar Energy: Building a Solar Charging Circuit and a Parabolic Mirror Dish
Today we built the solar charging circuit by connecting the solar panels in parallel so that the amperage output would increase. We then soldered the wires together and connected them to a buck converter. The buck converter will take the energy coming out of the solar panels and make sure it outputs to only...
Continue readingSolar Energy: Creating a Parabolic Mirror
Today we spent the first 30 minutes doing math to calculate the equation of a parabola so that its focus would be 18 inches above its vertex. We then spent four hours building a physical parabola one foot wide and almost six feet long out of plywood, 2 x 4s and mirror tiles. The...
Continue readingConstructing Solar Box Ovens
Construction continued on the solar box ovens. Once they were complete, we learned about Arduino microprocessors. We are using the Arduinos to make a thermocouple circuit so we know the temperature inside our ovens. After a lot of difficulty trying to connect the Arduinos to a Windows computer, a Mac, and a Chromebook, the...
Continue readingSolar Energy Day One: Ohm’s Law, Circuits, Solar Cells, and Solar Ovens
During our first full day we got a basic understanding of Ohm’s Law and the relationship between voltage, current, and resistance. We built and explored wired breadboards and series and parallel circuits with resistors and light emitting diodes (LEDs). We learned how to solder wired circuits together as well as PCBs (printed circuit boards)....
Continue readingSolar Energy, Day Six — Assembling our Solar Parabolic Oven
On our last day of Solar Energy IL we assembled all 18 petals of the Solar Parabolic Oven together. It was difficult trying to get the shape of the parabola just right. We then constructed the cradle out of 2×4 boards and positioned the completed parabolic oven into it. We were unable to test...
Continue readingSolar Energy, Day Five — Building our parabolic oven, and a visit from first grade
Today, we used our petal template to make 18 cardboard petals with sides 20 degrees apart and curved to match our parabolic equation. This took all morning without a break so we took a long lunch. After lunch we were visited by the first grade classes to talk about robots and our Solar Energy...
Continue readingSolar Energy, Day Four
Today, we programmed our Arduino boards further, and we built them to record temperature using a temperature sensor. Then, we took our solar ovens outside when it was sunny so that they could heat up. We used the Arduino boards to measure their internal temperature. We baked cookies with our solar ovens for a...
Continue readingSolar Energy, Day Three — Constructing solar ovens (and Oreo update)
Today we spent four hours constructing our solar ovens with cardboard, styrofoam insulation, and aluminum foil. Unfortunately there wasn’t much sun today, so we couldn’t test them. We cut pieces of plexiglass using a score knife and broke them to the proper size to put on top of our solar ovens to prevent heat...
Continue readingSolar Energy, Day Two — Creating solar circuits and planning our Solar Box Ovens (plus an Oreo update)
Today we learned how to solder components onto a printed circuit board (PCB). These skills and the skills learned on Friday were used to connect the solar panels to each other in parallel. This way the electricity generated would double the amperage of the circuit’s output but keep the voltage at about 9 volts....
Continue readingSolar Energy, Day One — Soldering (and Oreos)
Today we learned the basics of electrity, electronics and soldering. We built series and parallel circuits with both batteries and resistors. Learning how to solder without burning ourselves, that was pretty cool. After lunch we learned how to breadboard and build LED circuits. All in all a very fun and interesting learning experience of...
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