uncleflo
Registered since September 28th, 2017
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Human Body Heat as a Source for Thermoelectric Energy Generation
Saved by uncleflo on May 31st, 2018.
The idea of converting human body heat into a form of usable energy has been targeted by scientists for years. A resting human male gives off roughly 100-120 Watts of energy. A very small fraction of this can be utilized by a thermoelectric device to power wearable devices. As an example, Seiko's Thermic Watch managed to capture continuous a charge at only one microwatt, so there is certainly a viable market that has not yet blossomed. It being known that 80% of a typical human's body power is given off as heat, current technologies can only produce a few milliwatts of energy. This is not nearly enough to charge your iPhone at a power input of roughly 5 watts, and unfortunately this sort of efficiency may never be possible.
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Seiko Watches > Thermic
Saved by uncleflo on May 31st, 2018.
The world’s first watch equipped with a mechanism for thermal power generation. The thermal power elements generate electricity from the temperature difference between the body and atmosphere and store it as energy in a secondary battery. A full charge keeps the watch running for about 10 months. The Thermic generates electric power via the Seebeck effect, a phenomenon produced when heat transfers from the back of the case to the case surface. To improve energy efficiency further, a power-saving mechanism stops the second hand whenever the watch is removed from the wrist.
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