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  • Small Scale Energy harvesting - Future Low Power Sources

    Ramani Aswath

    Member

    Updated: Oct 26, 2024
    Views: 980
    The old crystal radio set generated its own power. The bicycle dynamo harvests pedal power for the head light. The thermopile generates enough power for the control electronics from the wasted heat from the open gas flame. Decentralised low level power harvested from available sources may become more popular for small devices.
    Here are some ideas:
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  • Mathivanan_don

    Member • Sep 11, 2012

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

    Member • Sep 11, 2012

    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.
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  • [Prototype]

    Member • Sep 11, 2012

    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.
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