BIOCRITT limousin wrote:I learned in my previous classes that a gas never regains its initial volume when it is subjected to a decompression or violent compression ... did you tell me?
On the other hand, do you know if it is possible to get a simple functional stirling engine and not decoration.? ..
thanks.
I'm new to stirling so be indulgent!
please.
Hi Biocritt and Cuckoo Captain '
We haven't lied to you because brutal evolutions are irreversible: concretely, the system does not return to its initial state because energy is degraded in friction during evolution.
However, this has no effect on the chemical composition of the gas, and as long as it does not escape, it can work for a very long time. Simply, the performance of the machine is deteriorated (and not the fluid).
For organic liquids, there can be degradations on the other hand; in principle, they are still very low. Fridges work without problem for decades without changing their refrigerant.
For simple Stirlings on a human scale and "not toys", it is on the German side that it is happening. SunMachine, De Dietrich and SOLO (which recently changed name ...). These are alpha type engines in general.
But commercially, it is still very much in its infancy, even for these 3 firms. They “sell” them (forecast 2009) in principle in combination with a device, either a Holzpellet (wood cogeneration), or an Erdgas version (natural gas) or a solar dish (Disch Stirling).
SOLO rather made it in heavy industry and had participated in the Eurodish solar project (see my site for more info) with a Stirling of 10 kW elec and 30 kW thermal.
In other large manufacturers, there is SES (Stirling Energy System) in the US.
For my part, I am developing SPRATL as experimental research with Pascal HA PHAM.
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