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Heat Engines; Magnetic Curie Effect, Nitinol & Bimetal

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Curie Effect Heat Engine

Curie Effect Heat Engine

Explore the properties of Ferromagnetism and Curie points with this Curie Effect Heat Engine. Kit Includes:

  • Nickel Curie effect enhanced wire (part of aluminum wire assembly)
  • 1.5" Aluminum Wire Assembly
  • Neodymium Disc Magnet 1"Diamter x 3/16" Thick
  • Birthday Candle
  • Brass Machine Screw & Nuts
  • Wooden Side .75" x 4" x .25"
  • Base 1.25" x 2" x .5"
  • Steel Plate 1.25" x 3" x .032"

Construction Booklet (pdf 74K)

Video File 1 Heat Engine Test: Hi Res (544 Kb) Lo Res (208 Kb)

Video File 2 Heat Engine Running: Hi Res (1.5 Mb)Lo Res (488 Kb)


External Link - The Design, Construction and Testing of a Thermo-Magnetic Motor by Tim Raney

HE-01 $35.96
Heat Engine (kit - requires assembly)


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Nitinol Heat Engine Kit

Heat Engine


See the Heat Engine in action!

More Information

Heat Engine
Nitinol Heat Engine - powered by hot and cold water.

The Heat Engineis a very special kind of heat engine that demonstrates the conversion of heat energy into mechanical energy. Based upon the work of Dr. Alfred Johnson who was granted a patent on this type of heat engine in 1977 patent # 4,055,955.

It uses the unique property of Nitinol alloy to generate mechanical motion from heat. Nitinol has trained into a shape at high temperature (about 600° C) and allowed to cool to room temperature, where it can be easily deformed and welded into a loop.

When heated above a transition temperature (in this application about 50° C to 70° C) the Nitinol object abruptly returns to its high-temperature shape with a substantial force that is able to drive the pulleys and thus create motion.

pulling
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HE-02N - $65.95
Nitinol Heat Engine

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Components for Curie Heat Engine

Brass Candle Accessory for Heat Engine

Replace the birthday candle on your magnetic heat engine with this brass candle that does not burn down like a wax candle. Simply fuel with alcohol and let it burn. Be careful, once lit candle becomes very hot.

BC-01 $14.95
Brass Candle

Neodymium Disc Magnet

DiscMagnet-01 - $7.95
1" diameter neodymium disc magnet

6" Low Curie Point Wire

N-Wire-01 - $4.95
6" Low Curie Point Wire

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