An ideal Stirling cycle running on a closed system has air at 200 kPa, 300 K at

Question:

An ideal Stirling cycle running on a closed system has air at 200 kPa, 300 K at the beginning of the isothermal compression process. Heat supplied from a source of 1700 K is 800 kJ/kg. Determine
(a) The efficiency and
(b) The net work (wnet) output per kg of air. Use the PG model.