ME2121 – Engineering Thermodynamics

Entropy (Cont’d)
The term entropy is generally used to refer to
both total entropy and entropy per unit mass
since the context usually clarifies which one is
meant. Check units!
The entropy change of a system during a
process between the initial and the final
state Eqn. 6.5:
S
2
Q
S2 S1
T
1
int
rev
(kJ / K)
ME2121 - Entropy I - Introduction (ASM) 27
© Copyright 2005 Prof. Arun S. Mujumdar.