Stirling Engine Model Low Temperature Difference Magnetic Motor Model KitDescription Stirling Engine Model Low Temperature Difference Magnetic Motor Model Kit Specific Item Name Low Temperature Difference Magnetic Stirling EngineModel QX DWCL 01Material Zinc alloyAluminum alloyStainless steelDimension 89 135mmWeight 152g Features Just a cup of warm boiled water can make it rotation It also can be heated by heat sources such as light heat solar energy Can be used for teaching purpose What is the Stirling Engine A Stirling engine is a heat engine that operates by cyclic compression and expansion of air or other gas the working fluid at different temperature levels such that there is a net conversion of heat energy to mechanical work The engine is like a steam engine in that all of the engines heat flows in and out through the engine wall How it works This is traditionally known as an external combustion engine in contrast to an internal combustion engine where the heat input is by combustion of a fuel within the body of the working fluid Unlike the steam engines use of water in both its liquid and gaseous phases as the working fluid the Stirling engine encloses a fixed quantity of permanently gaseous fluid such as air or helium As in all heat engines the general cycle consists of compressing cool gas heating the gas expanding the hot gas and finally cooling the gas before repeating the cycle Package Included 1 x Low Temperature Difference Magnetic Stir