Monday, May 14, 2007

HW #8, P6 - Entropy Change, Heat Transfer and Irreversibilities - 3 pts

A closed system undergoes a process in which work is done on the system and heat transfer Q occurs only at temperature Tb. For each case listed below, determine whether the entropy change of the system is positive, negative, zero or indeterminate (you cannot tell for sure from the given information).

a.) Internally reversible process with Q > 0.
b.) Internally reversible process with Q = 0.
c.) Internally reversible process with Q < 0.
d.) Internal irreversibilities present with Q > 0.
e.) Internal irreversibilities present with Q = 0.
f.) Internal irreversibilities present with Q < 0.

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