1 files changed, 37 insertions, 0 deletions
diff --git a/32/CH11/EX11.12/11_12.sce b/32/CH11/EX11.12/11_12.sce
new file mode 100755
index 000000000..12346bded
--- /dev/null
+++ b/32/CH11/EX11.12/11_12.sce
@@ -0,0 +1,37 @@
+//pathname=get_absolute_file_path('11.12.sce')
+//filename=pathname+filesep()+'11.12-data.sci'
+//exec(filename)
+//Pressure at which steam is generated(in bar):
+p=30
+//Temperature of steam(in C):
+Ts=300
+//Rate at which feed water enters(in kg/s):
+r=11
+//Temperature at which feed water enters the economiser(in C):
+T1=100
+//Mass of fuel used(in kg):
+m=5000
+//Calorific value of fuel(in kJ/kg.K):
+C=35000
+//Temperature of feed water(in C):
+T=27
+//From steam tables:
+hg=2993.5
+//Latent heat at 100 C:
+L=2257
+//Mass of steam genrated per kg of fuel(in kg/kg fuel):
+ms=r*3600/m
+//Heat added per kg of fuel(in kJ):
+Q=hg-4.18*T
+//Equivalent evaporation from and at 100 C per kg of coal(in kg):
+Ee=ms*Q/L
+//Boiler efficiency:
+n=Ee*L/C*100
+//Heat utilised in economiser per kg of fuel(in kJ):
+Q1=ms*4.18*(T1-T)
+//Percentage of energy utilised in economiser:
+P=Q1/C*100
+printf("\n RESULT \n")
+printf("\nEquivalent evaporation per kg of fuel = %f kg",Ee)
+printf("\nBoiler efficiency = %f percent",n)
+printf("\nPercentage of energy utilised in economiser = %f percent",P)
+\ No newline at end of file