I'm an old guy and after periodic immersions in STEM classes have started thinking we should reverse the way subjects are taught. I'd get more out them if they were used to build a house (on paper) or flashlight with its parabolic reflector, or in the market (stock and super) to find best prices, etc. So we'd work from the finished product back to the concepts of parabolas, statistics, electronics, weight distribution and vectors. I guess this is the case study method and seems better than word problems as I've never had to determine when I'd meet someone driving towards me on a road at 50mph when I was moving towards them at 60mph, but did have to understand how much dirt a buried house roof could carry. Is this reasonable?
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Community produced power is a national effort by citizens to help address the need to reduce carbon production. One of the examples, the University Park Solar Project in Columbia, Maryland, (http://bit.ly/w8zBA5) is discussed in the last five minutes of the Jan 6, 2012 Marketplace Money episode (http://bit.ly/wSZ5n2). Makes you wonder how much power could be produced if the roof of every church in the United States was covered with solar cells while bumping up the church treasuries and returning a percentage of investment to parishioners who fund the ventures as was done in this example.
Our automatic whole-house generator has anti-islanding gear which is readily available and not expensive.
Battery technology is improving on many fronts making it a storage that can be strategically located and coupled with various types of intermittent supplies to offset spikes and drops, as well as long-line issues. Perhaps an increasing number of electric cars plugged into the grid will provide another future load-leveling element.
I've not heard this ever being tried, though it's reasonable. Seems more likely to work with leaks occurring outward rather than the inward type in this situation. At one time in the nuclear industry flames and associated smoke were used to find inward type leaks until the flame was sucked into a hole where it ignited some wiring insulation, caused a fire that was difficult to extinguish and pretty well eliminated use of the approach throughout the industry. That flame approach was also used where less turbulent air flow existed than around the turbines and turbulent air would make smoke trails difficult to detect and follow. Perhaps some objection could also be made to the smoke being sucked into a very carefully controlled steam environment which would require chemical analysis of the smoke product. This would differ in fossil-fueled plants versus nuclear plants with a greater concern for public safety.
I worked at a power station with steam-driven turbines where this sort of sound camera could be very useful. The discharge side of these turbines are kept in a vacuum state to pull steam through more efficiently. Unlike most leak where you see or feel what's coming out, vacuum leaks suck inward and sound is the best way to locate them. The ambient noise in a power station prevents use of ears until you're mere inches from the source and several people could spend days in that type of search. The only aid we had was a sound detector tuned to the frequencies normally produced by a vacuum leak. I never found a leak using one and think very few were ever found by other users. (We just slapped tape and other sealants on likely trouble spots and waited to see if relevant gauges changed.) This would also be a great place to look at bearings for a range of motors and pumps as well as motor and air-operated valves for signs of air leaks and failing parts. Great technology. Hope it pans out.
In this talk, and in her new book Captive Audience: The Telecom Industry and Monopoly Power in the New Gilded Age, Susan Crawford—a professor at the Benjamin N. Cardozo School of Law and a former special assistant to President Obama for science, technology and innovation policy—demonstrates how deregulatory changes in policy have created a communications crisis in America. The consequences: Tens of millions of Americans are being left behind, people pay too much for too little Internet access, and speeds are slow. But everyday people can change this story—and what happens in the year ahead could change the game for good."
Link to Original Source
Community produced power is a national effort by citizens to help address the need to reduce carbon production. One of the examples, the University Park Solar Project in Columbia, Maryland (http://bit.ly/w8zBA5), is discussed in the last five minutes of the Jan 6, 2012 Marketplace Money episode: http://bit.ly/wSZ5n2. Makes you wonder how much power could be produced if the roof of every church in the United States was covered with solar cells while bumping up the church treasuries and returning a percentage of investment to parishioners who fund the ventures.
Link to Original Source