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Diffstat (limited to '3012/CH7/EX7.5/Ex7_5.sce')
| -rwxr-xr-x | 3012/CH7/EX7.5/Ex7_5.sce | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/3012/CH7/EX7.5/Ex7_5.sce b/3012/CH7/EX7.5/Ex7_5.sce new file mode 100755 index 000000000..e6639a76e --- /dev/null +++ b/3012/CH7/EX7.5/Ex7_5.sce @@ -0,0 +1,27 @@ +// Given:- +p1 = 3.0 // entry pressure in Mpa +p2 = 0.5 // exit pressure in Mpa +T1 = 320.0 // entry temperature in degree celcius +T0 = 25.0 // in degree celcius +p0 = 1.0 // in atm + +// From table A-4 +h1 = 3043.4 // in kj/kg +s1 = 6.6245 // in kj/kg.k +h2 = h1 // from reduction of the steady-state mass and energy rate balances +s2 = 7.4223 // Interpolating at a pressure of 0.5 MPa with h2 = h1, units in kj/kg.k + +// From table A-2 +h0 = 104.89 // in kj/kg +s0 = 0.3674 // in kj/kg.k + +// Calculations +ef1 = h1-h0-(T0+273)*(s1-s0) // flow exergy at the inlet +ef2 = h2-h0-(T0+273)*(s2-s0) // flow exergy at the exit +// From the steady-state form of the exergy rate balance +Ed = ef1-ef2 // the exergy destruction per unit of mass flowing is + +// Results +printf( ' The specific flow exergy at the inlet is %.2f kJ/kg.',ef1) +printf( ' The specific flow exergy at the exit is %.2f kJ/kg.',ef2) +printf( ' The exergy destruction per unit of mass flowing is %.2f kJ/kg.',Ed) |