Shape-memory alloy-driven power plant and method

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United States of America Patent

PATENT NO 8299637
APP PUB NO 20110140456A1
SERIAL NO

12639828

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Abstract

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A power plant configured for converting thermal energy to electricity includes a source of thermal energy provided by a temperature difference between a primary fluid having a first temperature and a secondary fluid having a second temperature that is different from the first temperature. The plant also includes a collector configured for enhancing the temperature difference between the primary and secondary fluids, and a heat engine configured for converting at least some thermal energy to mechanical energy. The heat engine includes a pseudoplastically pre-strained shape-memory alloy disposed in heat exchange relationship with each of the primary and secondary fluids. Further, the plant includes a generator driven by the heat engine and configured for converting mechanical energy to electricity. A method of utilizing a naturally-occurring temperature difference between air and/or water to change a crystallographic phase of the shape-memory alloy to convert the temperature difference into mechanical energy is disclosed.

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Patent Owner(s)

Patent OwnerAddress
GM GLOBAL TECHNOLOGY OPERATIONS LLCP O BOX 300 DETROIT MI 48265-3000

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Brown, James Holbrook Costa Mesa, US 30 315
Browne, Alan L Grosse Pointe, US 345 6814
Johnson, Nancy L Northville, US 367 6136
Wittorf, Marten Ingelheim, DE 35 330

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