6.8 A Stirling engine operates between 25 and 450°C and has a maxrmumpperatmg pressure of 50 atm an:n
mimmum operatmg pressure of 1 atm. The engine u a
air as the workmg fluld. Determine the work output per Cycle of the engine for two cases
(a) The specific heat of air is temperature-independent
(b) The prOperties of air are taken to be temperature-dc:l
_» pendent.