- #1
pinsky
- 96
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I'm observing the circular process of a heat engine. It's p-v diagram is
So between points 3 and 4 the heat is extracted. That causes losses since the efficiency if given by
[tex] \eta =1- \frac {Q_c} {Q_h} [/tex]
Where Qh is the heat the heat source has given and Q_c the amount of heat that the "cold" container took.
If we don't cool down the engine in during the process between 3 and 4, the efficiency would grow to 100% (if friction is not consigered).
The process would then look like the picture below, and 3 and 1 we would do an isobaric contraction.
I've encountered isobaric processes through my studies, but only as a theoretical concept. What are the reasons why it couldn't be used here?
So between points 3 and 4 the heat is extracted. That causes losses since the efficiency if given by
[tex] \eta =1- \frac {Q_c} {Q_h} [/tex]
Where Qh is the heat the heat source has given and Q_c the amount of heat that the "cold" container took.
If we don't cool down the engine in during the process between 3 and 4, the efficiency would grow to 100% (if friction is not consigered).
The process would then look like the picture below, and 3 and 1 we would do an isobaric contraction.
I've encountered isobaric processes through my studies, but only as a theoretical concept. What are the reasons why it couldn't be used here?