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Please go back and read the conversation. With the input of 36.5J, the temperature increases from 300K to 600K and doubles the volume from 100cc to 200cc. The final pressure balances atmospheric, plus a negligible fraction for holding up the weight of the piston, which I didn't calculate. So not is...

So we are in agreement then? Earlier in the conversation with Vincent I showed that doubling the volume of 100cc of working fluid in a 1cm^2 area cylinder against atmosphere would require 36.5J of energy passed into the working fluid. Then I showed that lifting a 102g piston as well as pushing agai...

... Being accepting of others opinions won't hurt you any, ... ... I accept others opinions. I'm constantly saying "your entitled to your opinion" or "we can agree to disagree". But that is not sufficient for others who insist on trying to "educate" me and refuse to le...

Well, "adiabatic" IS without any kind of thermal transfer in or out of the gas. To me that is a less complex scenario than isothermal which for every joule of work done by the gas an equivalent amount of heat is added to replace it. Very true, but my point being that an adiabatic expansio...

The end of the compression stroke and beginning of the expansion stroke is where the displacer is moving away from the hot side pushing the gas to the hot side through the regenerator away from the cold side at the highest rate. The piston is at the top of its travel and is moving at its slowest ra...

I had no idea I had done that. Oops. Me bad. Any other examples? ... Probably, but I'm not wasting any more time on the issue. The point is, by continuing to post to these topics you are keeping them afloat, constantly bumping them to the top of the topic list. I rarely post anything other than res...

Yeah. We already covered the additional input energy required to perform work on a piston earlier in the conversation. In the response quoted, I was only considering the free expansion of the gas, so we can isolate one thermodynamic issue at a time. It would have been clearer if I'd specified that ...

Tom that was a good response and about sums up what I would ask. By "free expansion", I believe Stroller and I had settled on the baseline of the gas expanding against one atmosphere. So it's still doing "work". I think, for now, thinking in terms of an isothermal expansion is l...

In any example, we would use the minimum amount of gas needed to do the work at hand . By degrades, I mean into a lower temperature state. It's the action of the expanding gas "consuming" energy that I am interested in. Is internal energy really reduced when the gas expands, other than by...

It's the action of the expanding gas "consuming" energy that I am interested in. Is internal energy really reduced when the gas expands, other than by conduction losses to the surrounding colder surfaces of the engine. And if so, how exactly? The internal energy of the entire expanding vo...

It's the action of the expanding gas "consuming" energy that I am interested in. Is internal energy really reduced when the gas expands, other than by conduction losses to the surrounding colder surfaces of the engine. And if so, how exactly? The internal energy of the entire expanding vo...

VincentG I brought up this topic on the Physics forum the begining of last year, at least I think it is the same thing you are asking. It was a sincere question from my point of view. My threads were being "moderated" with a heavy handed approach, for no good reason IMO, but anyway, though...

... And I don't resurrect old threads. Someone else does. I then join in.... You have a short memory. Between you and Matt If your not actually one and the same. You just started posting to a thread that has been dead for six months: https://stirlingengineforum.com/viewtopic.php?p=20525#p20525 Ther...

Orifice=expansion valve=properly designed capillary tube=manually adjusted valve=needle valve All of which are missing. If you expect someone to believe that a short tiny length of not much smaller diameter tubing ... ... I'm not sure your looking at the same video that I posted saying it looked li...

Heat is not internal energy. To imply that the two are the same, as you often do, is misleading. To claim gases contract, as you do, is misleading. A Stirling engine has to concentrate heat by other means, certainly not by heat being "rejected to the cold plate". Especially considering at...