+
Bill Nye Demonstration:  The Stirling Engine

Bill Nye Demonstration: The Stirling Engine

Author: Bill Nye
Description:

Is it possible to get something spinning with just hot water? The Stirling engine is almost 200 years old and still one of the most efficient heat engines ever invented. Check out just how quiet and smooth this little apparatus is.

(more)
See More
Try a College Course Free

Sophia’s self-paced online courses are a great way to save time and money as you earn credits eligible for transfer to over 2,000 colleges and universities.*

Begin Free Trial
No credit card required

25 Sophia partners guarantee credit transfer.

221 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 20 of Sophia’s online courses. More than 2,000 colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.

Tutorial

The Stirling Engine

The Stirling cycle uses an external heat source to move the pistons and makes almost no sound in the process. How is it different from other engines?

How it Works

Every Stirling engine has a sealed cylinder with one part hot and the other cold. The working gas inside the engine (which is often air, helium, or hydrogen) is moved by a mechanism from the hot side to the cold side. When the gas is on the hot side it expands and pushes up on a piston. When it moves back to the cold side it contracts. 

 

Remember that as long as there is a difference in temperature, there is a "heat source", this is steam when on the water and it is the air when on the ice water.

 

Efficient and silent, a perfect solution perhaps?

Learn More

Here are some extra sites that give you more information about the Stirling cycle, it's history and current uses.

Your Turn!

Have cool science demonstrations you show your classes regularly? Save time and materials by making a quick video tutorial of your own for students. By using demonstrations and lab investigations regularly, students not only will know science, they can apply it!

Check out some resources on doing it yourself: