diff options
Diffstat (limited to '1943/CH2/EX2.6')
-rwxr-xr-x | 1943/CH2/EX2.6/Ex2_6.sce | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/1943/CH2/EX2.6/Ex2_6.sce b/1943/CH2/EX2.6/Ex2_6.sce new file mode 100755 index 000000000..150d63c6d --- /dev/null +++ b/1943/CH2/EX2.6/Ex2_6.sce @@ -0,0 +1,73 @@ + +clc
+clear
+//Input data
+p1=150//Pressure of inlet steam in bar
+T1=550//Temperature of steam in degree C
+p2=20//Pressure after expansion in bar
+T2=500//Reheat temperature in degree C
+pc=0.075//Condenser pressure in bar
+php=50//Pressure of steam in h.p turbine in bar
+pip=[10,5,3]//Pressure of steam in i.p turbines in bar
+plp=1.5//Pressure of steam in l.p turbine in bar
+m=300*1000//Steam flow rate in kg/h
+
+//Calculations
+h1=3448.6//Enthalpy in kJ/kg
+h4=3467.6//Enthalpy in kJ/kg
+s1=6.5119//Entropy in kJ/kg.K
+s2=s1//Entropy in kJ/kg.K
+s3=s1//Entropy in kJ/kg.K
+s4=7.4317//Entropy in kJ/kg.K
+s5=s4//Entropy in kJ/kg.K
+s6=s5//Entropy in kJ/kg.K
+s7=s6//Entropy in kJ/kg.K
+s8=s7//Entropy in kJ/kg.K
+s9=s8//Entropy in kJ/kg.K
+t2=370//Temperature in degree C
+t3=245//Temperature in degree C
+t5=400//Temperature in degree C
+t6=300//Temperature in degree C
+t7=225//Temperature in degree C
+t8=160//Temperature in degree C
+h2=3112//Enthalpy in kJ/kg
+h3=2890//Enthalpy in kJ/kg
+h5=3250//Enthalpy in kJ/kg
+h6=3050//Enthalpy in kJ/kg
+h7=2930//Enthalpy in kJ/kg
+h8=2790//Enthalpy in kJ/kg
+x9=(s9-0.5764)/7.6751//Dryness fraction
+h9=168.79+x9*2406////Enthalpy in kJ/kg
+h10=168.79//Enthalpy in kJ/kg
+h11=h10+0.001*pip(2)*100//Enthalpy in kJ/kg
+h12=467.11//Enthalpy in kJ/kg
+t14=111.37//Temperature in degree C
+h14=467//Enthalpy in kJ/kg
+h13=h12//Enthalpy in kJ/kg
+h14=h13//Enthalpy in kJ/kg
+h15=h14//Enthalpy in kJ/kg
+h16=561.47//Enthalpy in kJ/kg
+h17=h16//Enthalpy in kJ/kg
+h18=640.23//Enthalpy in kJ/kg
+h19=h18+0.001*(p1-pip(2))*100//Enthalpy in kJ/kg
+h20=762.8//Enthalpy in kJ/kg
+h21=h20//Enthalpy in kJ/kg
+h22=1154.23//Enthalpy in kJ/kg
+h23=h22//Enthalpy in kJ/kg
+m1=((h23-h21)/(h2-h22))//Mass in kg
+m2=((h21-h19)-(m1*(h22-h20)))/(h5-h20)//Mass in kg
+m3=(((1-m1-m2)*(h18-h17))-((m1+m2)*(h20-h18)))/(h6-h18+h18-h17)//Mass in kg
+m4=((1-m1-m2-m3)*(h17-h15))/(h7-h16)//Mass in kg
+m5=(((1-m1-m2-m3-m4)*(h14-h11))-(m4*(h16-h12)))/(h8-h12+h14-h11)//Mass in kg
+WT=(h1-h2)+(1-m1)*(h2-h3)+(1-m1)*(h4-h5)+(1-m1-m2)*(h5-h6)+(1-m1-m2-m3)*(h6-h7)+(1-m1-m2-m3-m4)*(h7-h8)+(1-m1-m2-m3-m4-m5)*(h8-h9)//Workdone by turbine in kJ/kg
+Wp=(0.5+14.5+0.15)//Workdone in kJ/kg
+Wnet=(WT-Wp)//Net workdone in kJ/kg
+Q1=(h1-h23)+(1-m1)*(h4-h3)//Heat supplied in kJ/kg
+ncy=(Wnet/Q1)*100//Cycle efficiency in percent
+t23=264//Temperature in degree C
+sr=(3600/Wnet)//Steam rate in kJ/kWh
+hr=((Q1/Wnet)*3600)//Heat rate in kJ/kWh
+P=((Wnet*m)/3600)/10^3//Power output in MW
+
+//Output
+printf('(a) The cycle efficiency is %3.2f percent \n (b) The feedwater temperature is %i degree C \n (c) The steam rate is %3.2f kJ/kWh \n (d) The heat rate is %3.0f kJ/kWh \n (e) The quality of steam at turbine exhaust is %3.4f \n (f) The power output is %3.2f MW',ncy,t23,sr,hr,x9,P)
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