Stirling Engine Model Physical Motor Power Generator External Combustion Educational Toy

Features  -This is an external combustion engine in which the fuel is burned continuously, and the piston is moved by the expansion of air (or helium or hydr ogen) as a medium, and the expansion gas is cooled in the cold chamber, and the cycle is repeated. Only a small alcohol lamp, you can make it fast rotation and strong power.  -As the external combustion engine to avoid the traditional internal combustion engine of the explosion to do work, in order to achieve a high efficiency, low noise, low pollution and low operating costs.  -The biggest advantage of the external combustion engine output and efficiency from the influence of altitude, very suitable for high altitude areas.    Description: Item Name:Stirling Engine Model;  Color: silver;  Materials: brushed aluminum alloy+stainless steel+thickened glass;  Size: 155*130*80mm;  Flywheel Diameter: 60mm;  Transmission Wheel Diameter: 25mm;  Power Cylinder Bore: 12.5mm;  Piston Stroke:13mm;  Generating Voltage: 3-5v;  Suitable Age: 8