Diesel cycle engine is analyzed using the air standard method . Given the conditions at state 1, compression ratio (r), and cutoff ratio (rc) determine the efficiency and other values listed below.
Note: The gas constant for air is R=0.287 kJ/kg-K.
–Given Values–
T1 (K) = 322
P1 (kPa) = 120
r = 11.5
rc = 1.6
Specific internal energy (kJ/kg) at state 1: 229.86
Relative specific volume at state 1= 520.52
Relative specific volume at state 2= 45.26
Temperature (K) at state 2= 817.4
Pressure (kPa) at state 2 = 3503.1
Specific enthalpy (kJ/kg) at state 2 = 841.12
Temperature (K) at state 3 = 1307.84
Pressure (kPa) at state 3 = 3503.1
Enthalpy (kJ/kg) at state 3 = 1404.3
1. Determine the relative specific volume at state 3.
2. Determine the relative specific volume at state 4.
3. Determine the temperature (K) at state 4
4. Determine the pressure (kPa) at state 4.
5. Determine the specific internal energy (kJ/kg) at state 4.
6. Determine the net work per cycle (kJ/kg) of the engine.
7. Determine the heat addition per cycle (kJ/kg) of the engine
