Stirlingengineforum.com

@ Jack: A bidirectional turbine could use the acoustic power to convert it into mechanical power to generate electricity. The thermoacoustic Stirling engine is working now, with a very high frequency and a surprisingly great stroke (approx. 30-50 mm) of the undamped free piston. here a Link to the v...

Now the thermoacoustic Stirling engine is running to my complete satisfaction. Here you can see a video of it: https://youtu.be/GXcYNeh2POc?feature=shared The frequency is very high and the stroke is much greater than I thought! Now I will attach some sensors and a linear generator to make serious p...

I couldn't edit my first post so I write the updated links here: Video of my prototype engine: https://youtu.be/cnm9v0fxKHc?feature=shared Introduction of the Thermoacoustic Stirling engine: https://youtu.be/0qQWjgYk5UY?feature=shared Unfortunately, as always, everything takes a little longer. I'm h...

I just have to turn the wire mesh for the regenerator to size, set up the cooling circuit and some other small things like the mounting. I hope to finish it to the next weekend and can begin to tune the tube lengths. I am very curious to see if i can produce a sound from the engine. I will report as...

@ Jack and spinningmagnets: Thanks, for your kind post! If you want to have a workshop like mine just build it, it is really nice to to have the possibility to machine what ever you want! It was not expensive (my wife would never allow that ;-) ) everything is bought used and cheap and electronics (...

After building several high power (up to 300 watts) kinematic Stirling engines and struggling much with wear and friction which makes them very maintenance intensive I want to try new concepts. Now I will give the Thermoacoustic Stirling engine a try and I am very curious about its potential as ther...

Hi, thank you very much for the well-founded contributions and interesting documents. One of the most powerful research thermal lag motors I have seen so far is the one from Geoff Vaizey. His engine stopped when he used helium instead of air and the simulation by Allan Organ, which was validated wit...

Hi all, I haven't learned enough about thermoacoustic and thermal lag engines but as far as I know the basic principle of operation is fundamentally different. Peter Tailer says in his US patent 5414997A: 'A thermal lag engine has a cooled cylinder and piston connected to a heated chamber. A working...

Hi all, although I am developing my other engines further I already think about the the concept of my next big engine. I am still undecided whether a Thermal Lag or Thermoacoustic engine is more promising for an electricity-generating system to support our solar system in times of low sunshine. With...

Hi Simon, since years I am building rhombic Stirling engines and indeed its an ingenious invention. The rhombic geometry allows many possibilities of volume variations especially the general form (different lenghts of con rods etc.). Look after the original analysis "The Philips Stirling Therma...

I hope its ok to send a link to one of my own engine videos, there are several videos in my channel of my engines with up to 300 watts.

https://youtu.be/VcULP9Y-01A

Best wishes and greetings

Ralf

Hi, I just finished my new Stirling engine with half rhombic drive. The half rhombic Stirling is much more easy than my original rhombic engine (300W output) which will maybe lend to a useful generator/micro CHP in a small mini series. I know very little about the half rhombic crank drive and just f...

Hi,

you can find the Stirling engine design manual free on the internet (as pdf I think).

It has very detailed data of the GPU-3.

Greetings

Ralf

Hi steedspeed and all, I have a pressure sensor attached to my stirling engine which measures the working pressure in real time while running. At the moment it has a pressure difference with 10 bar meanpressure of 7 bar (8 bar min / 15 bar max pressure). You can see it in this little video: https://...

Hi Ian, the displacer is made out of titanium which also looses much of its strenght at high temperatures as I read now. Maybe I will try a good titanium alloy or stainless steel if the new one (also out of pure titanium but a bit more sturdy and with 2 instead of 1 radiation shield) which in nearly...