Flywheels are used to store kinetic energy. Once a flywheel is accelerated to some rotational speed, it will only slow down because it is transferring energy to a load. By accurately measuring the flywheel’s rate of rotation versus time, we can determine the rate at which the flywheel’s energy is being transferred to the the […]
To simplify the building of the 3D printed PE 2 Stirling engine I’ve designed and tested two modifications. The parts were printed on a Stratasys printer. Neither of these modifications is required, nor will they alter the performance. If you have built or are building the original design there is no need to change. If you haven’t built those parts you may find the modified parts save a little time and effort. The STL files for the parts are available at thingiverse.
One of the more difficult yet critical issues in designing your first Stirling engine is deciding on the correct power piston displacement. My earlier discussion of power piston sizing did not satisfy a lot of people. So I’m going to make this one very simple to apply. For me to suggest the right size power […]
I chose to use a variable reluctance motor as the starter for my Stirling engine design for the following reasons: 1. The most important feature is that it offers near zero friction when the motor is not energized. The only sources of friction are the shaft bearing drag and aerodynamic drag on the rotor. This […]
This is a continuation of my Stirling engine development for a sculpture project that is solar powered. Because this engine needs to autonomously control its operation, it needs to self-start at the proper time. Here’s a video of the engine with starter and controller. This engine is based on the simple Stirling with some significant […]
How big should your Stirling engine power piston be? (Be sure to see my more recent post on power piston sizing. It provides more specific information. — Doug Conner) A common problem Stirling engine designers face is how much volume should the power piston sweep in comparison with the displacer? This of course only applies […]
I’ve tried a variety of regenerators on the Simple Stirling 1 engine and the one shown in the photo is simple to make and performs as well as or better than all of the other ones I’ve tried. The test results on the engine with the original displacer and with the modified displacer containing the […]