Stirling engine type?

Stirling engine type?
Posted by Adirondack Jack on 23 May, 2021 00:09
Though I’ve been curious for years, I never messed around with stirling engines.
So, I ordered this desk fan. It hasn’t arrived yet, but in the meantime I’ve done just enough reading to get confused about the stirling engine types. Best I can tell, this engine falls either under alpha or gamma type engine. Anybody know which type it is? Also, roughly what rpm can I expect from such a design? Thanks in advance.

https://www.enginediy.com/products/thermal-power-stove-fan-vintage-stirling-engine-physics-science-experiment-energy-education-tool

#1 Reply
Posted by Laynelee on 08 Jun, 2021 06:53
Hi, Jack!

I am honored that I also own one. I am glad that you are curious about the Stirling engine. This engine is of the gamma type. Because it imitates the fan, the speed is designed to be between 450-700 rpm. If the firepower is increased, the speed may be higher.

Layne

#2 Reply
Posted by SimpleyMake on 08 Jun, 2021 11:39
It’s a gamma type engine. The displacer cylinder is separated out from power piston cylinder. The 90 deg phase is achieved using crankshaft