Thermodynamics Mech3001 - Week 9 - Problem 1 (9.52)

9.52 An air-standard Diesel cycle has a compression ratio of 16 and cut off ratio 2. Air is at 27°C and 95 kPa at the beginning of the compression process. Accounting for the variation of the specific heats with temperature, determine:
a) The temperature after the heat addition process
b) the thermal efficiency
c) the mean effective pressure

Answer: a) 1725 K, b) 56.3%, c) 675.9 kPa

[brobiv]

this is the hardest question i have ever done so far