- #1
clurt
- 28
- 0
Homework Statement
Initial
pressure: 140kPa
Temperature: 25C or 298K
Volume: 0.14m^3
Final
Pressure:1.4MPa or 1400kPa
It uses index compression, n=1.25. So PV^1.25 = constant.
c_p = 1.041kJ/kg.K and c_v = 0.743 kJ/kg.K
Homework Equations
¥ = c_p/c_v
ΔS=c_v*ln(Tf/Ti) + R*ln(Vf/Vi) [i think]
The Attempt at a Solution
I found ¥ to be 1.4012
PV^n = 12 therefore Vf = 0.0222
140*0.14^1.25=11.989
1400*Vf^1.25=11.989
Vf^1.25=11.989/1400