Description: Features Novel Design This Stirling engine model is perfectly combined with a mechanical music box The design is novel and unique the shape is simple and exquisite with a delicate wooden base which shows a high end taste The power generated by the Stirling engine drives the mechanical music box to rotate which makes a pleasant sound While observing the operation of the Stirling engine it can also make the music box sound bringing a better visual and audio sense High Quality The main parts are made of aluminum alloy which is strong and durabl The heating cylinder is made of quartz glass with low expansion coefficient and high temperature resistance fine workmanship perfect details accurate and reliable connection of transmission parts and a combination of texture and beauty Fuel Usage 95 alcohol need to be prepared by yourself pay attention to not add water kerosene gasoline lighter oil liquor etc Starting Method Place the Stirling engine model on a horizontal table add two thirds of 95 alcohol to the alcohol lamp ignit and heat for 30 seconds then turn the flywheel and the engine can run Working Principle The Stirling engine outputs power through a cycle of cooling compression heat absorption and expansion of the air in the cylinder Significance Through hands on operation you can observe the operation process of the entire engine understand the working principle of the Stirling engine more intuitively and deepen your interest