P4: Polytropic processes are often used to approximate the closed portion of the IC engine cycle (i.e. the compression and expansion strokes). From Thermodynamics, you might remember that polytropic processes follow the relation PV"-Constant. Consider the following P-v data for a compression process (Process A), where the working fluid is air. Process A v (m3/kg) P (kPa) Initial State 0.861 100 0.78925 113 0.7175 129 0.64575 150 0.574 176 0.50225 213 0.4305 264 0.35875 341 0.287 466 0.21525 696 0.1435 1229 Final State 0.07175 3242 Calculate the compression ratio. Calculate the specific work (work per unit mass of fluid). Is the work calculated in e) done on the gas or done by the gas? Why? Determine the temperature at the end of the compression process. Determine the specific heat transfer (heat transfer per unit mass of fluid). Is the result as you expected? Explain.