Stirlingengineforum.com

Bumpkin,
That did paint a pretty picture. A neon flashing heat engine.

Ian SC, The cold end on a stirling engine stays relatively cool. Do you know what the gradient is toward the hot end? By this I mean is the center of the cylinder exactly 1/2 the difference of the hot end and cold end.? If you can figure where the temp. is to high for the magnets ,you can have the m...

This was theropods idea. I just started a new thread, since it was infringing on vamoose's thread. A microwave is focused internally on the bottom of the displacer/ regenerator. The cylinder is made of an RF transparent material like silcon nitride ceramic. When the displacer reaches the bottom of t...

silcon nitride, would be a good ceramic to use for the cylinder. It is RF transparent, extreme thermal shock resistant, high toughness The microwave could be focused beyond the bottom of the hot side ,to just within the cylinder to an absorber. No heat would be lost from the hot end.

Theropod, Would an old dismantled microwave oven work for that application? Would you have to shield it in some way? Do you think it would be just a short burst or a longer pause of released microwave? The heat would be exactly where you want it. The cylinder could be a ceramic cup. Could you use th...

Congradulations, You have it up and running! I take it this is a commercial unit you want to be able to sell in the future? Questions, How do you picture these engines being powered? Are they design for a specific application? What cost would you like to see these units come in out? I hope you the v...

What if you could increase or decrease the working gas flow through the displacer / regenerator at will ? Not only control its flow but also where that flow takes place in the regenerator. What Iam thinking of is sieve plates that progressively line up. Stepped magnets, on the outside would pull the...

Theropod2, I was thinking of that thread also , after seeing this engine. As I remember, the big problem was were do you grab the output from? The center is where all rotary engines put the perpendicular axil. When you place your central heat pipe there, it makes it complicated to replace that centr...

wouldn't it be more efficient if it was a stationary 5 cylinder alpha? The engine wouldn't have to turn its entire mass and the hot side wouldn't have to lose all its heat each cycle. Its probably just a piece of art.

Its an LTD using hot and cold water? Pretty weak and slow. A nice radial mobile.

Ian SC,
So as I understand it, Your stirling engine is running at 220rpm, and the dyno at 110rpm. If you ran the dyno straight, without reduction at 220rpm this would be too fast?

To complement Ian's suggestion, all metallic layers could be made of foil. You could randomly dimple both sides of each sheet for better airflow. A thin layer of carbonized paper could be used to separate differing metals. Iam not sure I understand the working hypothesis. Do you want the top and bot...

http://www.magnomatics.com/technology/magnetic-gears.aspx http://youtu.be/ludLU4_6ZDM http://youtu.be/_qpHMZ9L4P8 http://www.robives.com/mechanisms/recip#.UjuEATXn9y1 The alternator is geared up using a magnetic transmission. Magnetic gears can be high torque. They have higher efficiency than regula...

Thanks theropod2,
The old VCR, seems like the way to go.

Vamoose, It really sounds like an interesting area of investigation. Do you have any theories of composition ? The layering would be the easiest to construct. Your thinking of things like steel wool, ss wool and copper? You might even consider a core of one material and an outer blanket of another. ...