Nitinol Heat Engine Kit
Heat Engine - Nitinol Metal Engine driven 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.
See the Heat Engine in action!
Nitinol Heat Engine