The expansion phase of a simplified diesel cycle is simulated by an air-filled piston-cylinder system, as shown in the figure. A servo-actuator attached to the piston controls the pressure. The air...

Extracted text: The expansion phase of a simplified diesel cycle is simulated by an air-filled piston-cylinder system, as shown in the figure. A servo-actuator attached to the piston controls the pressure. The air first undergoes a constant pressure expansion followed by a polytropic expansion (with n=1.4). The ratio of final specific volume to initial specific volume, re, is rex = vs/v1. Initially (state 1) the temperature is T1 = 682 °C and the specific volume is vi = Piston 0.04135 m/kg. Heat is transferred to the air during the constant pressure process, 192, and the air temperature increases to T2 = 2475 °C (state 2). During the polytropic expansion process the volume is increased to meet the design expansion ratio of rex = 20. Treat air as an ideal gas. d) Determine the specific heat transfer from state 1 to 2, 192. e) Determine the specific work from state 2 to 3, zws. f) Draw the state points and process lines on a P-v (pressure-specific volume) diagram. Include constant temperature lines and label the pressure and specific volume values corresponding to each state. Indicate the total specific work done, 1ws.