For our transfer of energy we looked at
changing heat energy into movement using a
sterling engine.
changing heat energy into movement using a
sterling engine.
The way the engine works is that heat underneath the engine leads to the expansion of gasses pushing up the displacer piston upwards and spinning the crankshaft and flywheel forcing the power piston up increasing the volume of the chamber causing the gas to cool faster the displacer piston goes back down and the process repeats
The reaction we used to power the engine was that of calcium chloride and water that produces heat. we got up to 68.2 degrees celsius the chemical equation for our reaction is CaCl2 + H2O = Ca +Cl2 + H2O. Calcium chloride is poured into the water causing the calcium and chloride to separate from one another producing heat. The chemical energy reaction creates heat energy which is transferred into movement energy.
One modification we made was a rubber band change this change reduced the stress on the flywheels hinge and after cutting to size decreasing the friction against the piston arms. Another change was the switch to a fan rather than a car. Making a working fan is much more simple than that of a car but still ended up being a failure.