The Durham-based start-up company Organic Transit is looking to move from prototype into production mode of its three-wheeled, solar- and-pedal-powered hybrid bicycles. The company has launched a campaign on the website Kickstarter to raise $ 100,000 ... Local start-up developing solar-powered bike
Imagine what you might do if you could print your own solar panels. That's kind of the dream behind Shawn Frayne and Alex Hornstein's Solar Pocket Factory -- although they see it more as the "microbrewery" of panel production rather than a tool for everyone's garage. With over 000 of backing from a successful Kickstarter campaign, the inventors are now working on refining the prototype. If all goes well, by April they'll have a machine that can spit out a micro solar panel every few seconds. In the meantime, Frayne stopped by Flora Lichtman's backyard with a few pieces of the prototype to explain how the mini-factory will work.. Printing Solar Panels in the Backyard
PTC values make reference to a standardized rating system would always measure PV (photovoltaic) output under specific conditions (magnitude of direct sunlight, air temperature, wind speed and elevation) to ensure solar array electrical efficiency will be measured and compared. It had been developed included in the PCUSA (Photovoltaics for Utility Scale Applications) project to build standardized test conditions that allows you to compare photovoltaic system performance. STC (Standard Test Conditions) is really a rating system also utilised by section manufacturers. It uses similar variables as PTC (degree of sunshine, air temperature, wind speed and elevation), but uses slightly different numbers with its formula. STC ratings are typically rather than PTC ratings, and are also respected as less associated with actual performance. When shopping for your solar power panels, seek out the PTC rating and employ it because your standard to compare and contrast. Remember to don’t compare STC in one type of solar power with PTC on another variety of section — that would be like comparing apples to bananas. PTC is often lower then your STC rating, mainly because the PTC factors will be more stringent (lower air temperature, etc).
By way of example, a 185 Watt solar array electrical manufactured by Brand A might have a PTC rating of 165.9, and Brand B might report a PTC rating of 163.7. Brand A, which has the better PTC, would perform slightly as cool as Brand B. This will not appear to be a major difference. But once that you’re installing 100 residential solar panels it could be significant. Another criteria make use of when comparing products from different cell manufacturers certainly is the minimum warranted power rating. Although solar power are advertised as 250 Watts or 185 Watts, hi-def deliver 100% in their advertised power. It’s because quite a few naturally sourced factors such as losses from resistance during transmission however the wires, inverters and transformers, losses stemming from temperature extremes, and losses on account of dirt or snow. When these kinds of losses are factored perfectly into a solar panel’s performance, manufacturers will advertise the absolute minimum power rating that they may guarantee. So when comparing solar panel systems, operate the PTC (the upper, so much the better) and also manufacturer’s minimum warranted power rating (again, the better the better). If neither of rating is advertises, look for the manufacturers’ spec sheets to be sure you are comparing apples to apples.
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