Product overview A compact, fully functional aircooled Stirling engine model designed for handson demonstration and study. The unit incorporates an authentic miniature engine with a sealed chamber containing operational fluid, a radiatorstyle exterior for natural air cooling, and a metal alloy construction that emphasizes precision and durability. Key benefits Clear demonstration of working principles: The exposed, simple structure makes it easy to observe piston motion, heat transfer, and basic Stirling cycle mechanics for classroom or workshop use. Reliable, functional design: The sealed chamber with operational fluid recreates real engine behavior while containing the working medium for safe, repeatable demonstrations. Effective heat dissipation: Aircooling through the radiator exterior allows the engine to cool naturally as air moves across its surfaces, reducing the need for auxiliary cooling systems. Durable precision: Crafted from metal alloy with fine mechanical machining, the model resists wear and is built for extended use in instructional settings or displays. Compact and portable: At 26.5x13.9x12.5cm, the model is small enough for desktop use while large enough to show internal components clearly. Features and specifications Engine type: Aircooled Stirling engine model with operational fluid in a sealed chamber Cooling method: Aircooling via radiator exterior interaction Construction material: Metal alloy, machined for mechanical precision and wear resistance Dimensions: 26.5x13.9x12.5cm Practical applications Educational demonstrations: Ideal for physics and engineering labs to illustrate heat engines, thermodynamics, and energy conversion in a tangible way. Technical training and prototyping: Useful for handson instruction in small mechanical assembly, maintenance practice, and component study. Display and collection: Suitable for museum displays, desktop exhibits, or hobbyist collections where functional demonstration and clear component visibility are required. Why choose this model This Stirling engine model combines working mechanics, visible structure, and robust materials to deliver a reliable instructional tool. Its sealed operational fluid chamber and aircooled radiator make demonstrations realistic and low maintenance, while the metal alloy build provides lasting precision for repeated use.