Working Principle Stirling engine is a heat engine that operates at different temperature levels by cyclically compressing and expanding air or other gases (working fluids), thereby converting heat energy into mechanical work. Material and Durability Made of aluminum alloy material, which is wear resistant, not easy to rust, and has a long service life. Design and Craftsmanship Exquisitely crafted with an attractive appearance, this model is well suited for display as a decorative piece in the home or office. Educational Value A practical tool for learning physics and mechanics; ideal for science projects and classroom demonstrations to illustrate energy conversion and thermodynamic concepts. Applications Widely used as classroom teaching props Suitable as gifts for birthdays and other occasions for friends, family, and parents Practical Use Scenarios Classroom demonstration of how heat energy is converted into motion through the Stirling cycle. Science project or science fair display to illustrate principles of energy conversion and thermodynamics. Desk decoration or display piece for home or office, providing a conversational and educational focal point