Entropy and Entropy Change Flashcards
Sgen < 0
impossible process
Sgen = 0
reversible process
a non-conserved thermodynamic property, designated “S”
entropy
Entropy concept was introduced by a German physicist named ___________________________ in the year 1850
Rudolf Clausius
Recall that liquids and solids can be approximated as _________________ substances since their specific volumes remain nearly constant during a process
incompressible
It depends on the state of the system and not the path that is followed
entropy
This concept was introduced by a German physicist named Rudolf Clausius in the year 1850
Sgen > 0
irreversible process
That is, the temperature of a truly incompressible substance remains _____________ during an isentropic process
constant
This concept was introduced by a German physicist named Rudolf Clausius in the year 1850
entropy
Note that the entropy change of a truly incompressible substance depends on ________________ and is independent of pressure
temperature only
is a measure of the entropy created by such effects during a process
entropy generation
what are the irreversibilities that will cause the entropy of a system to increase
friction, mixing, chemical reactions, heat transfer through a finite temperature difference, unrestrained expansion, non quasi-equilibrium compression, or expansion
It is a state function
entropy
In the absence of compressed liquid data, the entropy of the compressed liquid can be approximated by the entropy of the _________________________ at the given temperature
saturated liquid
