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diff --git a/3685/CH12/EX12.11/Ex12_11.sce b/3685/CH12/EX12.11/Ex12_11.sce new file mode 100644 index 000000000..cf52a8438 --- /dev/null +++ b/3685/CH12/EX12.11/Ex12_11.sce @@ -0,0 +1,24 @@ +clc +h1 = 3285 // Enthalpy at state 1 in kJ/kg +h2s = 3010 // Enthalpy at state 2s in kJ/kg +h3 = 3280 // // Enthalpy at state 3 in kJ/kg +h4s = 3030 // // Enthalpy at state 4s in kJ/kg +// Saturation pressure at temperature 180 degree centigrade +psat = 10 // In bar +h4 = h3-0.83*(h3-h4s) // // Enthalpy at state 4 +h5s = 2225 // // Enthalpy at state 5s in kJ/kg +h5 = h4-0.83*(h4-h5s) // // Enthalpy at state 5 +h6 = 162.7 // Enthalpy at state 6 in kJ/kg +h7 = h6 // // Enthalpy at state 7 +h8 = 762.81// Enthalpy at state 8 in kJ/kg +h2 = h1-0.785*(h1-h2s) //Enthalpy at state 2 +m = (h8-h7)/(h4-h7) // regenerative mass flow +n_cycle = ((h1-h2)+(h3-h4)+(1-m)*(h4-h5))/((h1-h8)+(h3-h2)) // Cycle efficiency + +printf("\n Example 12.11\n") +printf("\n The minimum pressure at which bleeding is neccessary is %d bar",psat) +printf("\n Steam flow at turbine inlet is %f kg/s",m) +printf("\n Cycle efficiency is %f percent",n_cycle*100) +//The answers vary due to round off error +// Part A and Part B are theoretical problems + |