Question

Consider a cold air-standard Diesel cycle. At the beginning of compression, 102 kPa, and 300 K. The mass of air is 0.120 kg, the compression ratio is 16, and the cut-off ratio is 2.0

For a cold air-standard analysis use the following values: cp = 1.005 kJ/kgK, cv = 0.718 kJ/kgK, k=1.40, M=28.97 kg/kmol.

Determine the following :

(a) pressure at end of compression stroke, in kPa

(b) temperature at end of compression stroke, in K

(c) maximum temperature in the cycle, in K

(d) pressure at end of power stroke, in K  

(e) heat addition for the cycle, in kJ  

(f) net work for the cycle, in kJ  

(g) cycle thermal efficiency

(h) mean effective pressure, in kPa

Answer 1