Air is in an initial state $(1)$ contained in a cylinder$-$piston device.

which goes through an isothermal process $(1-2)$ and another isochoric process $(2-3)$ until reaching

a final temperature $($T$3).$ The initial volume is $0\mathrm{.}8$ m$3$ at $927$ C and $600$ kPa. The

pressure doubles at the end of the isothermal process. If the final pressure $($T$3)$ is $27$ C$,$

Calculate the total heat transfer $(1-3).$ Cv$=0\mathrm{.}718$ kJ$/$kgK$.$ ANSWER: $-$

$568$ kJ