Bill Gross On New Energy - 0 views
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Dan Sloboda on 07 May 11This a great talk on Solar Energy and a new innovative way to improve on our current notion of solar energy. According to Bill Gross, current solar panels that rely on silicon and other materials are still not cost effective enough to be practical. I most cases, it takes more energy to make a solar cell, than it will give out in its entire life. This led to the challenge of finding other ways of making cost-effective solar energy for use in our society. The talk covers Gross's solution of collecting the sun using reflectors to concentrate the energy to a small converter, how to design these reflectors, and what converter would be used to turn this solar energy into usable energy. In order to solve the problem of finding the most effective way of capturing/reflecting the rays of the Sun Gross used Genetic Algorithms. The use of Genetic Algorithms is a powerful way of solving intractable problems using "natural selection". You take a problem that you can't solve with a pure mathematical answer, you build an evolutionary system to try multiple tries at guessing, you add sex - where you take half of one solution and half of another and then make new mutations - and you use natural selection to kill off not as good solutions. This process ultimately led them to some great ideas for reflectors. In order to capture this heat from the solar rays Gross utilizes an advanced Sterling Engine mechanism. In summary, I highly suggest that everyone watch this video and see these alternative methods of capturing and converting solar energy.