Stirlingengineforum.com

If I've well understood. 1) Molecular weigh of CO2 is very high (good), but the dimension of the molecule is very large (very bad). So exchange clearances have to be very large (fkuid do not flow well) This contrast at all the condition of "good surface of exchange" (many VERY small ducts,...

The first is a "Low Temperature", less performant and less common too. The second is more typical, but is better if represented using metal instead of glass, (glass is heat insulating) here glass is used for Scenography, Show. Both are "demonstrative model", on the flywheel shoul...

How is really "the shape": you can find the images and video in youtube, digiting "stirling engine". You can see so the variety of shapes, and of the materials. - The engine is done by a side that is heated, and one other side that is cooled (frequently finned, in higher technolo...

Very difficult, (and easy) to do a sketch to define "a Stirling engine." The Stirling engine is constitutionally very "mixed", ie it has three basic structures that will each give a very different look, then distinctions for low, medium, and high temperature , which for their par...

Theropod, thanks. Yes I know, gasification of coal was the basis of CO (carbon monoxide) production, patents before WW II by Germans and then by others (now upgraded) admit production from coal of gasoline, diesel combustible, methanol, etc. Unfortunately all combustibles come from "wood" ...

I correct myself:
"....but the same had "guessed" geometries and conducted, ...."
have to be coorected in:
"....but if the same engines had "guessed" geometries and conducted, ....

Hello Geoff; The choice of the 1:1 ratio is not due to the fact that I I plan to use fuels hy tech, but for the fact that the engine is alpha, obviously with medium to high temperatures, as we do in many. The ratio 1:1 ( reported in the literature ) is (what in my judgment and my opinions certainly ...

Geoff, I'm entering now in discussion, excuse me all. for my poor knowlwdge of English I do not have read all messages in discussion, for so my notices may be are unappropriate. At this stage I think to write this: I'm buiding a 96 cc alpha engine, (so 1:1 ratio), air, atmosferic, but pressurizable ...

Should be a "composite material", ....for so not so easy to do; stainless steel is however heavy, and thermal conductor, both not wanted in displacer. There are few limits for temperatures. Rescor 740 is good if it is enough "not permeable" to gases, in small thickness, or if it ...

Goat: in power station is NOT used air,
is used water steam, and this is a completely different thing,
There are different cyles, seems like a good soup, but are not the same thing.
Ferraccio

I suppose that boron ritride "exagonal" (said white graphite) as lubricant, may be is a powder.
I think is improbable that is a liquid.
Good notices vile fly, now I carefully translate ...

The material is proposed low weigh not conducing for displacers.
Ferraccio

I report discussion made by Vile_fly with information of Ian, and mine from other topic. I think is an important turning point Quote //// Re: another displacer material--aerogel. Postby Ferraccio » 12 Mar 2012, 14:12 I found very good material: is Rescor 740. Is very hot resistant: 1250 celsius degr...

Really i think that Rescor 740 was used for the thermal insulating of the Space Shuttle (the tiles that protected the "belly" of the vehicle from the heat).
Ferraccio

Very well: attention vile fly! You're falling directly and easily in a high performance engine, and high technology ....;-) Rescor 740 can be worked (filed, machined, drilled and milled), There are other Rescor ceramics, cold moldable, solid, very high high features, with (instead) good thermal cond...