This preview has intentionally blurred sections. Sign up to view the full version.
View Full DocumentThis preview has intentionally blurred sections. Sign up to view the full version.
View Full DocumentThis preview has intentionally blurred sections. Sign up to view the full version.
View Full DocumentThis preview has intentionally blurred sections. Sign up to view the full version.
View Full DocumentThis preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: 1 ± dS  Q H  ≤ T H 1 ± 2 ± ± 2 ± ± 1 ± dS, use dS = − 1 dS − Q C  ≤ T C 2 2 ± 1 ± T C ≤ − T C 1 dS ⇒  Q C  ≥ T C ± 1 1 ± dS and  Q C   Q H  ≥ T H T C η = 1 −  Q C   Q H  ≤ 1 − T H 8.044 L19B5 Arbitrary Engine Cycle d /Q ≤ T dS for each element along the path. ± 2 ± 2 ± 2 d /Q 1 T dS ≤ T max dS 1 1 ² ³´ µ ≤ ² ³´ µ positive  Q H  8.044 L19B6 ± 2 ² 1 ² 1 d /Q ≤ 2 T dS, both sides are negative ² 1 ² 1 T dS  ≥ T min  Q C  ≥  2  2 dS  ² 2 T min  1 dS  since dS = 0 ≥ T min  Q C   Q H  ≥ T max T min η = 1 −  Q C  ≤ 1 − T max  Q H  8.044 L19B7 Carnot cycle in a pure thermodynamic approach Q C T C Used to deﬁne temp. η = 1 −  Q H  •   ≡ 1 − T H • Used to deﬁne the entropy /Q d ± d ≤ 0 /Q is an exact diﬀerential T ⇒ T 8.044 L19B8...
View
Full Document
 Spring '08
 staff
 Thermodynamics, Entropy, Heat, Fundamental physics concepts, Heat engine, Carnot cycle

Click to edit the document details