Small Scale Energy harvesting - Future Low Power Sources

Replies

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  Mathivanan_don

  But, if the transmitted signal is consumed by devices, then the signal becomes weak.
  Is it not?
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  Ramani Aswath

  The signal covers a band of frequencies. The harvesting is not confined to any one of them. Since the energy so harvested will any way degenerate to heat, it does not matter if a part of it is collected as energy. The basic problem is that the broadcasting is a spherical wave front because the user can be anywhere in the path.
• 

  [Prototype]

  I guess there's similar thing used in modern generators. Since the generators are only like 60-70% efficient, they loose a lot of energy in form of heat. This heat is captured & supplied to the boiler chamber for heating the water in addition with the bio fuel.
  
  Same goes for IC engines. We should think about certain method to convert that heat. Now we use radiators in car which pass the liquified gas to reduce the temperature of engine to certain limit. Instead of loosing this energy we can actually utilize it some way. I've thought about it, but due to lack of knowledge, it just stayed as an idea only.