I just purchased and read the book "Around the World by Stirling Engine" by Brent H. Van Arsdell. Which is available here on the Stirling site. One of the points the author made was that a great deal of time and energy (in the form of human mental/physical effort) has been directed towards researching and developing stirling engine applications for which a simpler and cheaper alternative already existed.
Problem: Car gets hot when parked in the sun
1. Park in the shade
2. Leave windows down
3. Drive a convertible and leave the top down
4. Place reflective cover on dash, and park car so windshield is facing the sun. (This would ensure that the most sunlight gets reflected back out of the car).
5. Use the commercially available solar powered window fan.
6. Have a friend wait in your car with the engine and A/C on if you will only be gone a few minutes.
7. Use a remote engine starter to start your car before you go out side, that way your car will be cool by the time you get into it.
8. In the future when everyone drives electric cars, your car could be plugged into the national power grid while you are not driving it, and a timer in your car or a call from your cell phone to your car could tell it to activate the electrically operated ac and have it ready for you.
I am sure all of you could come up with a few more ideas that would also be cheaper and more effective than a stirling engine. I guess what I am trying to say is that before any discussion of how a particular stirling engine could be built, there should be some thought put into weather or not a stirling engine would even be suited to the problem in the first place.
How about a stirling engine that you build a campfire in that would power your portable TV while you camp in some remote location? People love their shows! Or how about a stirling Lilly pad that would float around in the ocean with one end in the cool water and the other at the focal point of a huge bowl shaped reflector? How about sticking one end in the ice at the north pole and have the other end at the focal point of a large mirror? Of course that might further accelerate melting of the ice caps. Electricity or IceÂ…. Hummm.
This was my first posting, I apologize for any feathers that I might have ruffled.