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Stirling Engine
Stirling Engine (Product Code: SLE/H/01) is a low-temperature differential heat engine in durable stainless steel that shows students, in real time, how heat energy is converted into mechanical work. Stand it on a cup of hot water or ice water, give the flywheel a turn by hand and it keeps running on the temperature difference alone. A classic thermodynamics demonstration for middle school and a clear physics demonstration kit for India’s classrooms, it is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala.
Specifications
| Parameter | Detail |
|---|---|
| Type | Low-temperature differential Stirling engine |
| Material | Durable stainless steel |
| Flywheel diameter | 3-1/2" (9 cm) |
| Displacement cylinder diameter | 3-1/2" (9 cm) |
| Unit height | About 5-3/4" (14.5 cm) overall |
| Unit weight | 7.6 oz (216 g) |
| Heat source limit | Should not exceed 100° C |
| Cold source limit | Should not be below −20° C |
| Included | Engine and instructions |
| Needed, not supplied | Hot source, cold source and cup |
Typical Use
Fill a cup with hot water (kept at or below 100° C), set the engine on top and wait briefly for the base plate to warm. Rotate the flywheel by hand to start it: the displacer shuttles air between the hot and cool plates, the pressure changes drive the power piston, and the flywheel carries the motion round. To reverse the engine’s direction, use ice water instead, keeping the cold source no lower than −20° C. Pupils can time the flywheel, compare hot and cold runs, and discuss why a larger temperature difference gives more vigorous motion — a strong starting point for any heat energy science kit lesson on engines and efficiency.
This is a delicate instrument, and the connections between the flywheel and pistons can be damaged. Before each experiment, check two things: the flywheel, connecting rods and pistons should move freely without resistance, and the connecting rods must be properly seated so the linkages to the piston move freely. Avoid rough handling and never force the flywheel.
Manufacturer
The engine carries the ScienceLab brand of Jain Scientific Equipments Private Limited, an Ambala, Haryana company that designs and builds physics, chemistry and biology teaching apparatus for India and international markets. The about-us profile gives the full company background.
Related Laboratory Equipment
Items that complete a Stirling engine lesson:
- Stirling Engine with Alcohol Burner — an alternative engine that runs from a flame instead of a water cup.
- Glass Beaker — can hold the hot or ice water the engine needs.
- Hot Plate General Purpose — warms water for the hot source.
- Digital Thermometer — confirms the water stays within the engine’s temperature limits.
- Hand-Powered Engine Models — contrast with internal-combustion engine cycles.
Explore the complete Heat category for more thermal physics apparatus.
Frequently Asked Questions
What do I need to run it?
A hot source, a cold source and a cup, which are not supplied. Hot water in a cup is the usual choice; ice water makes it run the other way.
How hot or cold can the source be?
The heat source should not exceed 100° C and the cold source should not be below −20° C. Staying inside these limits protects the engine.
Why won’t my engine keep turning?
Check that the flywheel, connecting rods and pistons move freely and that the rods are properly seated. Give the base time to warm or cool, then start the flywheel by hand again.
How big is the engine?
It stands about 5-3/4" (14.5 cm) high, weighs 7.6 oz (216 g), and has a 3-1/2" (9 cm) flywheel and displacement cylinder.
Is it suitable for students to handle?
Yes, under supervision. It is a delicate instrument, so rough handling can damage the flywheel-to-piston connections.
What warranty applies?
Warranty terms are confirmed at quotation stage. Please raise any questions through our contact page.
Can schools order several units for group work?
Yes, class sets can be quoted for buyers in India and international markets; state the quantity of SLE/H/01 and the delivery location.
Request a Quote
Request pricing via the contact page, or add the Stirling Engine to the enquiry cart together with your other heat apparatus.
Last updated: 24 September 2026
