Stirlingengineforum.com

I think the lack of any such timing adjustment is one of the reasons that the applications for Stirling engines has been limited. If the engine shows a very limited sensitivity to timing, then there is no need to think about it any more. Which I intuitively think is the case, in comparison to a gas...

Tom I am talking about something much more obvious, while the phase relationship between piston and displacer in a conventional engine is fixed by design, in a magnetically controlled one is not and depends on the variable distance between the magnets, so it's most likely badly wrong, by design. It ...

alfa means high temp LTD low temp, an LtD alfa is a contradiction in terms

What's the meaning of the original question? an LTD engine is normally a gamma engine, magnetic or not. A magnetic one can be more efficient, hence run on a smaller delta T or the opposite, depending on how good a job has been done on the losses. I am surprised not to see comments about magnetic eng...

I was curious to see what a simple isothermal model would predict for my S engine, i am talking about the often called Schmidt analysis Looking on the web I found a few web page, or spreadsheet, calculators which have the machinery in place to calculate all relevant parameters and are free: 1) Herzo...

I am looking for examples of Stirling engines which power one double acting piston with two oppositely phased displacers. One known case is Jim Dandy's #6 http://www.starspin.com/stirlings/jimd6.html Another one seems to be the river paddle boat Heiland Lad http://www.stirlingengines.org.uk/boats/in...

About snifter valves nobody seems to indicate what the pressure threshold for opening is and what is the negative excursion of the engine pressure. An ideal snifter valve, that is a valve which would open with an infinitesimal negative pressure difference and of negligible inertia, seems to me that ...

Thanks Alfista, very interesting.Do you have a reference for the snifter valve article? To my intuition the nearest the average pressures of the carter and the engine are the easier should be for the engine to run. By easier I mean reduce the torque fluctuation, make it rely less on the flywheel to ...

In a Stirling engine there will always be small but finite leaks in the work piston seal. In steady state the average internal pressure will unavoidably reach an equilibrium with the steadier carter pressure. In an atmospheric engine the average internal molecular density will be lower than atmosphe...

Hi I am a retired physicist living in venice Italy, if you ever pass by please call in, will talk about Stirling engines or this fascinating city where I now live, Oscar