Question

An Otto cycle engine is analyzed using the cold air standard method. Given the conditions at state 1, compression ratio (r), and pressure ratio (rp). The specific heats for air are Cp = 1.0045 kJ/kg-K and Cv = 0.7175 kJ/kg-K.

T1 = 300K

P1 = 100 kPa

r = 10

rp = 1.65

a) Determine the temperature (K) at state 2.

b) Determine the pressure (kPa) at state 2.

c) Determine the pressure (kPa) at state 3.

d) Determine the temperature (K) at state 3.

e) Determine the temperature (K) at state 4.

f) Determine the pressure (kPa) at state 4.

g) Determine the net work output (kJ/kg/cycle) for the engine.

h) Determine the heat addition (kJ/kg/cycle) for the engine.

i) Determine the efficiency (%) of the engine.

Points will be given to answer showing all the work done to get right answer.

Answer 1

Step-by-step explanation:

The detailed and careful step by step calculation and analysis is as shown with appropriate formula in the attached files