A system executes a power cycle while receiving 1000 kj by heat transfer at a temperature of 500 K and discharging 800 kj by heat transfer at a temperature of 300 K. There are no other heat transfers....

A system executes a power cycle while receiving 1000 kj by heat transfer at a temperature of 500 K and discharging 800 kj by heat transfer at a temperature of 300 K. There are no other heat transfers. Determine the cycle efficiency. Use the Clausius Inequality to determine sigma cycle , in kJ/K. Determine if this cycle is internally reversible, irreversible, or impossible.