Introduction: Entropy Balances, Open Systems
Entropy change due to mass flow in and out of the system
So, we must add another term to the right-hand side of the
closed system entropy balance equation
:+
=
Entropy generation within the system
Entropy change due to heat transfer
Change in the entropy of the system
In Lesson 8A we wrote the
entropy balance equation
for closed systems.
=
+
Closed System
Open
System
System
In this lesson, we will develop
entropy balance equations
for open systems.Mass flowing into and out of the system carries entropy with it, just as it carries energy with it.
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