Posts Tagged ‘Florida engineer’
Photovoltaic performance
I had a chance to experiment with a photovoltaic cell to see how the performance varied with sun position. I found it easy to decrease the performance of the photo cell by 10% by pointing the cell slightly off a direct angle of incidence with the sun. It was a lot harder to cut the performance below 50% by changing the orientation of the photo cell. The 2V cell I used was normally matched with a 1.5V battery. There was a nominal voltage produced no matter what (clouds, pointing way off from the sun etc.)
energy independence is America’s future.
Happy 4th of July!Celebrate Your Personal Energy Independence Energy Star sent out promotion on personal and residential energy independence. Commercially, there are almost always unused opportunities waiting to be tapped. With 4th of July celebrations upon us—as well as the summer heat—no one wants their energy bills to rise with the temperature. Now is the time to think about how to manage your home energy use effectively, practically, AND economically. So, to coincide with our nation celebrating its independence, the U.S. Environmental Protection Agency's (EPA) ENERGY STAR® program is bringing you cooling tips for every budget, as well as some tips for travel if you're getting away—small steps that can help make a big difference in saving energy, money, and fighting climate change. Cooling Tips for Every Budget Summer Travel Tips Take the ENERGY STAR Pledge Cooling Tips for Every Budget Staying cool this summer doesn't have to mean cranking up the AC and spending a lot of money. A typical household spends almost 20 percent of its utility bill on cooling. EPA's ENERGY STAR program has some low-to-no cost energy-saving tips to beat the heat and save money, too. No-Cost Program your thermostat to work around your family's summer schedule—set it a few degrees higher when no one ...
