Thermal energy harvesting system
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United States of America Patent
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Mar 6, 2018
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N/A
app pub date -
Jan 15, 2014
filing date -
Jan 15, 2013
priority date (Note) -
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Abstract
A thermal energy harvesting system includes a pair of shape memory sections formed of shape memory alloy (SMA) material that are each disposed within a tube. The shape memory sections are fixed in position at one end and are attached at another end to a rotating shaft that is in mechanical communication with a power generator. Fluid inlet valves are provided in each housing and are each controlled to alternatingly supply hot and cold fluid to the tubes to selectively heat and cool the shape memory sections. This results in the cyclical contraction and expansion of the shape memory sections, which causes oscillating rotation of the shaft that is converted by the power generator into electrical power.
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