An air-standard diesel cycle begins by compressing air at 170 kpa and 315 k. if the compression ratio is 15 and the maximum cycle temperature is 1500 k, determine a) the heat addition, in kj/kg, b) the cut-off ratio, c) the heat removal, in kj/kg, d) net work produced per cycle, in kj/kg, and e) the thermal efficiency. assume properties vary with temperature

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