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Science-Accepted Past Grid Parity Tech 30:
H.R XXI Shape Metal Alloy - Nitinol2
• ▀▀4. Heat Recovery as
, Shape Memory Alloy(SMA): Nitinol engine:
• Due to cooling needs, Nitinol engine is more suitable for small unit based system.
Active movement to commercialize in 1970s but disappeared after. As happens for
some disruptive energy use, Shape Memory Alloy(SMA) is widely used & encouraged
for other non energy applications such as medical, dental, aerospace, robotics,
structural integration etc. Also there is some energy saving element at various
automatic actuation at set temperature etc.
• Can be made simple system to produce energy with much lower cost than existing heat
recovery tech. Less disruptive format mainstream Nitinol based generator
debut(Exergyn), Some private type trials with solar air heating/desorption chamber for
24hr "perpetual free energy system" demonstrations made(Kimton Gravity Engine,
Kellogg's Research Labs, Actment jp+), General Motors(GM) got US gov't grant in 2009
with Dynalloy & HRL Laboratories along with patent for car exhaust heat recovery but
news disappeared.
• Tech effect for power generation suitability is scientifically mainstream recognized but
occasional main media level pseudoscientization effort exists. Shape Memory Polymer
tried for some micro energy harvesting, eg ElectroActive Polymer by wind or
oscillation(TU Delft, Bayer AG+). Also it is notable Nitinol is activatable in much wider
temperature now with -200 to +150C range: eg Fe-Ni-Co-Ti(Daido Univ- Daido Steel -
+).
• SMA can be also almost no electricity use cooling by heat absorbing state under certain
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conditions(Seelecke & Schütze +)