Answer:
Net work, W = 842.52 kJ/kg
Power, P = 32.82 kW
Given:
compression ratio, r = 10:1
Total volume displaced,

= 280 K
= 70 kPa
Speed, N = 2100 rpm = 35 rps
Heat energy added, Q = 1400 kJ/kg
Solution:
Now, calculation of the overall efficiency:

where
k = 1.4

Also,
Net work done, W =

Now, specific volume is given by:



Now, mean effective pressure, P' can be calculated as:



(Since, r =
)

P' = 815.45 kPa
Now, for power produced, P:
P =

P =

P = 32.82 kW