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5 kg of air in a piston cylinder assembly undergoes a Carnot power cycle. Heat is...

5 kg of air in a piston cylinder assembly undergoes a Carnot power cycle. Heat is received at temperature?1=727°C and rejected at ?3=27°C.During the heat input process, the pressure changes from ?1=1200kPa to ?2=900kPa, respectively. Assume the air behaves as an ideal gas with constant specific heats.

Determine:

a.pressures [kPa] at beginning and end of the isothermal heat rejection process (?3,?4)

b.heat transfer from high temperature source [kJ]

c.thermal efficiency

d.net work output for cycle [kJ]

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