Ehe exhaust heat of around 600oc is used in a heat recovery process to generate electricity through a steam turbine, with a low temperature (after the condenser) of around 40oc. given the utilization efficiency of 0.45 applies to the carnot efficiency for this second conversion process, what is the overall process efficiency, using the realistic efficiency of 0.4 for the gas turbine based process (combined cycles)?

Agas contained within a piston-cylinder assembly e end nation about same energy states, 1 and 2, where pi 10 bar, v undergoes two processes, a and b, between the sam 0.1 m3, ui-400 kj and p2 1 bar, v2 1.0 m2, u2 200 kj: process a: process from 1 to 2 during which the pressure- volume relation is pv constant process b: constant-volume process from state 1 to a pressure of 2 bar, followed by a linear pressure-volume process to +20 0 state 2 kinetic and potential energy effects can be ignored. for each of the processes a and b, (a) sketch the process on p-v coordinates, (b) evaluate the work, in kj, and (c) evaluate process the heat transfer, in kj