An inventor claims to have built a machine that operates as follows: 100 kg/min of steam at T = 400°C and P = 5 bar enters the machine. 100 kg/min of saturated liquid water at 40°C leaves the machine....

An inventor claims to have built a machine that
operates as follows:
100 kg/min of steam at T = 400°C and P = 5 bar
enters the machine.
100 kg/min of saturated liquid water at 40°C
leaves the machine.
50,000 kJ/min of shaft work is produced by
the system. There is no heat exchange with
surroundings.
An undisclosed amount of nitrogen enters the
process at 315 K and 1 bar, and the same amount
of nitrogen leaves at 330 K and 1 bar.
Kinetic and potential energy of all entering and
leaving streams is negligible.
This is a steady-state process that can continue as
described above indefinitely.
Without knowing anything about how the machine
works, what can you say about the feasibility of the
inventor’s claim?

Jun 07, 2022

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An inventor claims to have built a machine that operates as follows: 100 kg/min of steam at T = 400°C and P = 5 bar enters the machine. 100 kg/min of saturated liquid water at 40°C leaves the machine....

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