- #1
trigger701
- 6
- 1
Hi everyone,
I have been looking at Carnot heat engines in a bid to better understand entropy, and I can't figure out how it actually does work. Why does the piston move?
In some diagrams I have seen weights being removed from the piston, reducing the pressure at constant temperature and therefore causing expansion. In other diagrams however, the piston is attached to a wheel and the expansion seems to just happen.
Can anybody help me understand why the piston is actually moving? And if it is due to external control of the piston, then surely this would require work- does this not defeat the object?
Trigger
I have been looking at Carnot heat engines in a bid to better understand entropy, and I can't figure out how it actually does work. Why does the piston move?
In some diagrams I have seen weights being removed from the piston, reducing the pressure at constant temperature and therefore causing expansion. In other diagrams however, the piston is attached to a wheel and the expansion seems to just happen.
Can anybody help me understand why the piston is actually moving? And if it is due to external control of the piston, then surely this would require work- does this not defeat the object?
Trigger