Heat engine experiments and 2nd law of thermodynamics.
This is a continuation of another thread (kind of):
https://www.scienceforums.net/topic/46143-stirling-turbine/?tab=comments#comment-1148735
but it is also something of a fresh start. So, I'm here starting a new thread
To get right into it, I purchased several identical Stirling engines from https://www.stirlinghobbyshop.com/ that is not a promotion, just a fact.
What I liked about these were they came in kit form, so I could do various modifications.
The first modifica
At this point, the focus of the discussion is, though the caloric theory is recognized as obsolete, there is a persistent remnant stated in a somewhat vague way in courses on thermodynamics that some heat must always be rejected to the sink in a heat engine.
My insulation is not perfect, so indeed, it is within the realm of possibility that "some" heat is still getting through, but if the functionality of a heat engine depends in any way on such "flowing through" of heat, then insulating th