This good-looking Low Temperature Stirling Engine could be a great your or families or yourself This is traditionally known as an external combustion engine in contrastto an internal combustion engine where the heat input is by combustion of a fuel within the body of the working fluid A Stirling engine is a heat engine that operates by cyclic compression and expansion of air or other, the working fluid, at different temperature levels such that there is a net conversion of heat energy to mechanical work , well made, sytlish, and adjustable.Very fantastic craftsmanship, made with Metal Alloy As in all heat engines, the normal cycleconsists of compressing cool, heating the, expanding the hot, and finally cooling the before repeating, Manufacturer: NUEAYMS