SESUSA members (that's you) are invited to visit our YahooGroup homepage, and click on the Database link or go directly here: ...
sesusa@yahoogroups.com
Sep 1, 2006 8:21 am
7083
Hi, Been new to the group and this is my first post. Would like to ask the best way to learn advances on the Stirling cycle application. Also, I have started...
During the 1980s, Mechanical Technologies Inc of Latham NY filed a number of interesting patents related to free piston Stirling engines. One innovative...
Hello I am new to this group and am working my way through the SESUAS files etc, I have been looking at the very useful "Gas circuit calculator" but am unsure...
John, That does seem less than optimal 8)). But first tell me how you got to where you are seeing these numbers please. What are you trying to do ? Are you...
Hi Tom, I am looking to spec a approx 1Kw engine and am trying to get a feel for the heat exhanger and regenerator sizes required etc. Entering the estimated...
Hi John, Yes the numbers from the GCS are real and you have just discovered one of the deficiencies of using Nitrogen/air for a working gas. The thermal...
I looked at the relationshipe between Q, dP, dia, len, number of tubes, and dead volume. If I assume laminar flow and ignore entry conditions (ie assume fully...
There is a new web site at <http://notscar.wiki.com/Home> which is building a few pages of up to date information relative to Stirling and Hot Air Engines of...
Because that is what the math says. L/N = D^4 *(pi*rho*dP*Gc/(128* mdot*myu)) and Q/V = 17.44 *K*dT/D^2 So, in order to maximize Q/V (heat transfer per dead...
The point is that the math drives to an infinitude of infinitesimal tubes of infinitesimal length. Admittedly this is based on a very simplified analysis - no...
Chris, I have sufficient resepct for your insight and calculation abilities that you do not really need to derive the function for me. My 'why?' was directed...
You said: "It assumes that the prototype engineers got it right." I think that this is a big assumption. I think a lot of the proto guys did it well - but not...
SESUSA members (that's you) are invited to visit our YahooGroup homepage, and click on the Database link or go directly here: ...
sesusa@yahoogroups.com
Oct 1, 2006 10:49 am
7099
I am begining the modifications to the web site to explain the process of determining the specifications of a Stirling engine for an application. It is under...
First, I'm beginner in the Stirling community, and new to the group, but I am a physicist, with whatever good or bad connotations you want to read into that....
Hal, I don't think it does heat all the air. I believe that the air it does heat expands sufficiently to move the mechanism. The toys don't produce any power...
Hal, My understanding is that your model engine does not have a "regenerator" per se; but if it did have one, consider where it would be. Is it possible that...
Hal, I agree that it does not seem possible that there is enough time for the heat transfer to take place between the "walls" and the mass of air inside the...
Thanks to all you guys, you have helped enormously to clarify my thinking. (And to Archibald, I gave a talk---not about Stirling engines) at CSM in Golden last...
No offense intended. I gave all you guys credit for educating me, and was just trying to say it in my own words. Brent van Arsdell also answered the same...
sesusa, For an engine without a regenerator, it seems like a relatively efficient flow pattern, since the warmest fluid on the cold side goes around the...
I think you pretty much nailed it. I would add that there have been engines (the artificial heart thermocompressor) that used multiple jets distributed around...
Oops. Why aren't holes in the displacer counterproductive? I would have thought that since it is the inflow layer on the bottom plate that is doing the heat...
On HAES Rick Topf astutely said "Adding a regenerator can make a difference, but it not clear to me that the benefit is from thermodynamic regenerative...
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