Stirlingengineforum.com

The Philips Bungalow Set, the '50 years Stirling. http://www.youtube.com/watch?v=M9UKu-AP02k is a type of "dynamically pressurized" Stirling engine, (NOT closed in a box). The pressurization when the engine is stopped vanishes rapidly, the compressed gas escapes from the seals of the pisto...

The flyweel is not a manufacturer or supplier of energy, is only an energy storage unit, you can not think to earn what you lost.

(This is just to see what happens ...)

You see that I had not understood. My answer is simple and even obvious. any moving parts can not keep up the pressure for more than a few tens of seconds. In short after a few seconds the engine returns to work in atmosferic pressure. It is accentuated in the case of alternating movements, as the p...

I'm sorry that are in Italian:
Not lubricated dry bearings: composed by layers of steel, synterized bronze (porous), and PTFE
see:
http://www.cgboccole.it/cg_boccole.pdf

Aviator and Ian, As always I try to answer trying to understand before all the question, and is not so easy for me. I'm sorry if I'm wrong. In pressurize an engine does not happen anything special, except that the gas is in greater quantity, and is more dense. In fact we live in a pressurized enviro...

You've done a question of million dollars. The project od a regenerator for Stirling is one of more diffucult in thermodynamic (not my words). For air may be is net mesh in stainless steel in gauzes stacked (cross flow), wire of order of 1/100 of inch, mesh of order0f 1/30 of an inch. The values hav...

Sorry again: I had not seen the engine data, but I guess I do not know the stroke, I think piston s. is the same as that for the displacer. Improving the characteristics, the piston engine can be imagined engine 5/8" diameter. The thickness of the cylinder wall must be of the order of 2 mm Stir...

cooler fins should be 1/16 "thick and 1/4" high, spaced with clearances of 1/8". The reduction of the distance beetween displacer axis and power piston axis, reduce dead space (hole conducting gas is shorter). Taking into account the picture of 1st of August: I think this architecture...

I apologize for the bad translation: I mean: if the wall thickness is four times higher is as how to use a material that conducts four times less, halving the thickness is like double the conductivity of the metal. Since the Stirling is an external combustion engine, or (with an external source of h...

Hayman, Ian, my speak. My hunch is excessive strength. With small power, as it is, the strength "necessary" in terms of thickness measurement is of the order of 1 / 100 of an inch, for obvious reasons of workability thicknesses are best to consider the order of 1 / 16, or at least the mini...

For vlspiano, yes it is, I'm Italian; excuse me for my poor english. For theropod2, anf for vlspiano, yes: copper (very thin foil or wire) are good for low temperature, but for upper temperatures (also if not so good for thermal characteristics) is commonly used stainless steel, (to temperature near...

If I can get into the speech: The origin of the Stirling engine patent is precisely the regeneration. (The hot air engines were already present before Stirling). The displacement obtained from the gas displacer transferred via the cold spot to hot spot, how is greater the difference in temperature b...

Of course bronze is the best for hard metallic material.

More tradictionally the self lubricating effect is done by bronze, (good), or bronze-graphite loaded (very good) or bronze-graphite sintered (very very good), for piston. Carbon iron or stainless steel for cylinder. The bronze is at all the best for anti-friction material, as it is, a lot more than ...

In my opinion is good, (with this range of dimensions and temperatures (low)) to use Rulon sheets as ring seal on piston or Teflon coated needle, all on stanless steel (very) thin piston, for cylinder is good stainless steel, being the very polished surfaces are good for Teflon product, without the ...