Compact Hot Air Mini Power Generator Stirling Engine for Physics Teaching A compact, easy to use Stirling engine designed for classroom demonstrations, lab experiments, and hobby projects. This mini hot air power generator converts a small temperature difference into visible mechanical motion and can drive a small fan or other lowload devices. The clear mechanical action makes thermodynamic principles easy to observe and explain. Key benefits Teaches thermodynamics in a direct, visible way: demonstrates the Stirling cycle, heat to motion conversion, and energy transfer in real time. Safe and lowrisk demonstration: operates on modest heat sources and runs smoothly at low temperatures suitable for classroom use. Durable, reliable construction: built from metal components and precision parts to provide consistent performance and long service life. Compact and portable: small footprint fits on lab benches, lecture tables, or desktop displays and is easy to store and move between locations. Simple setup and operation: minimal assembly required, allowing instructors and students to focus on experiments rather than complex preparation. Function and performance Principle: uses hot air and a temperature difference to drive a piston and crank mechanism, producing continuous rotary motion. Output: designed to power a small fan or other lowpower loads for demonstration purposes and visual experiments. Operation: stable rotation at modest heat input, suitable for repeated classroom demonstrations and handson student interaction. Compatibility and use Teaching and experiments: ideal for physics lab teaching models, thermodynamics and heat transfer lessons, and classroom demonstrations. Compatible with standard small heat sources for educational demonstrations and safe experimental setups. Suitable for hobbyists and makers who want a working Stirling engine for displays or basic mechanical projects. Size and materials Miniature form factor: compact design suited to desktops, lab benches, and portable demonstrations. Construction: metal working parts and visible mechanism for clear observation of moving components. Finish and build: designed for repeated use in educational settings with attention to mechanical visibility and robustness. Practical applications Classroom demonstration: show the Stirling cycle, explain heat engine efficiency, and let students observe piston and crank motion in real time. Science fair and projects: provide a working model that students can present to demonstrate principles of thermodynamics and energy conversion. Hobby and display: run as an educational desk display to illustrate mechanical motion driven by heat and to power a small fan for visual effect. What to expect in use Clear mechanical motion that aids explanation of concepts such as expansion, compression, and thermal cycles. Easy placement and operation on a stable surface with a small heat source appropriate for classroom safety protocols. Low maintenance requirements; occasional cleaning and basic care will keep the model running reliably. This mini Stirling engine is intended as an educational and demonstration tool for teaching the principles of heat engines, thermal expansion, and energy conversion in physics labs and learning environments.