Stirling Engine Generator Model (External Combustion Engine)

This Stirling Engine Generator Model is a scientific external combustion engine designed for hands-on experimentation, demonstration, and mechanical learning. Based on the classic Stirling engine principle invented by Robert Stirling in 1816, the model demonstrates how thermal energy is converted into mechanical motion and electrical output through visible operation.

🔬 Stirling Engine Working Principle

The Stirling engine is a heat engine whose theoretical efficiency approaches the Carnot cycle efficiency. It generates power through repeated gas expansion when heated and contraction when cooled.

As an external combustion engine, fuel burns continuously outside the working chamber. Expanding air drives the piston, while cooled gas contracts in the cold chamber. This cycle repeats continuously, converting heat energy into mechanical motion.

⚙️ Construction & Design

The model combines aluminum alloy, quartz glass, steel, and copper components. The transparent quartz glass cylinder allows clear observation of internal motion, making it suitable for scientific experiments and educational demonstrations.

The generator-style design features a belt-driven pulley system and an LED light, allowing users to observe energy conversion during operation. The model supports disassembly and reassembly for hands-on learning.

📐 Specifications

• Product Name: Stirling Engine Generator Model

• Engine Type: Stirling Engine (External Combustion)

• Base Material: Aluminum Alloy

• Cylinder Material: Quartz Glass

• Cylinder Sleeve Material: Aluminum Alloy

• Bracket Material: Aluminum Alloy

• Flywheel Material: Aluminum Alloy

• Connecting Rod Material: Steel

• Bushing Material: Pure Copper

• Dimensions: 165 × 85 × 100 mm

• Weight: 435 g

Flywheel Diameter:

• Main Flywheel: 49.43 mm

• Pulley: 24.72 mm

Cylinder Diameter:

• Hot Cylinder: 15.9 mm

• Power Cylinder: 21.50 mm

• Piston Stroke: 13 mm

• Recommended Age: 14+

🧰 Accessories Included

• Spare heating glass tube

• Alcohol bottle

• Wick

• Sealing rings

• Small belt

• 1 × LED light

🔥 Operating Notes

• Recommended fuel: 95% medical-grade alcohol

• Alcohol lamp fill level should not exceed two-thirds capacity

• Check for smooth flywheel rotation before use

• Allow approximately 1 minute of heating before startup

⚠️ Safety Notes

• Do not touch heated glass tubes or connected metal parts during or after operation

• Alcohol lamp becomes hot during extended use

• Suitable for ages 14 and above; younger users should operate under adult supervision

• Do not oil the piston; lubricate connecting rod ends only

• High rotational speed—ensure stable placement during operation

📦 Package Includes

• 1 × Stirling Engine Generator Model

• Accessories as listed above

Suitable for science experiments, educational demonstrations, mechanical study, collecting, and gift purposes.