Question

You have two systems A and B inside a larger total system. System A is at 1000 K and system B is at 500 K. The total system is at 700 K. System A delivers 500 kJ of energy to system B in terms of heat transfer. (4 total points) Total System 700K A 1000K Q=500KJ 500K B (a) Show that even if we assume the heat output from A and heat input to B to be reversible, the process detrimental (adds irreversibility) to the total system. (2 points) (b) If you want to maintain the entropy of the total system the same as before, how much heat do you need to take away from the total system (assume this is reversible)? (2 point)

          You have two systems A and B inside a larger total system. System A is at 1000 K and
system B is at 500 K. The total system is at 700 K. System A delivers 500 kJ of energy
to system B in terms of heat transfer. (4 total points)
Total System
700K
A
1000K
Q=500KJ
500K
B
(a) Show that even if we assume the heat output from A and heat input to B to be
reversible, the process detrimental (adds irreversibility) to the total system. (2
points)
(b) If you want to maintain the entropy of the total system the same as before, how
much heat do you need to take away from the total system (assume this is
reversible)? (2 point)

You have two systems A and B inside a larger total system. System A is at 1000 K and
system B is at 500 K. The total system is at 700 K. System A delivers 500 kJ of energy
to system B in terms of heat transfer. (4 total points)
Total System
700K
A
1000K
Q=500KJ
500K
B
(a) Show that even if we assume the heat output from A and heat input to B to be
reversible, the process detrimental (adds irreversibility) to the total system. (2
points)
(b) If you want to maintain the entropy of the total system the same as before, how
much heat do you need to take away from the total system (assume this is
reversible)? (2 point)

Added by David A.

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