A closed system receives heat at a rate of 2 kW from a sourc

A closed system receives heat at a rate of 2 kW from a source at 1000 K, electrical power at a rate of 2 kW and shaft power at a rate of 2 kW.

Determine the net rate of (a) energy transfer and (b) exergy transfer into the system. (c) What is the maximum possible rate of exergy rise in the system?

Answers are: (a) 8 kW, (b) 5.4 kW, (c) 13.4 kW