diff options
Diffstat (limited to '1427/CH2/EX2.23/2_23.sce')
| -rw-r--r-- | 1427/CH2/EX2.23/2_23.sce | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/1427/CH2/EX2.23/2_23.sce b/1427/CH2/EX2.23/2_23.sce new file mode 100644 index 000000000..6c7dd66bf --- /dev/null +++ b/1427/CH2/EX2.23/2_23.sce @@ -0,0 +1,24 @@ +//ques-2.23
+//Calculating percentage of excess air used for combustion of coal
+clc
+C=540;//weight of carbon in coal (in g)
+H=65;//weight of hydrogen in coal (in g)
+S=32;//weight of sulphur in coal (in g)
+O=60;//weight of oxygen in coal (in g)
+N=18;//weight of nitrogen in coal (in g)
+moisture=173;//weight of moisture in coal (in g)
+M=20;//total weight of dry products/kg of coal burnt (in kg)
+m1=C*(32/12);//weight of oxygen for carbon (in g)
+m2=H*(16/2);//weight of oxygen for hydrogen (in g)
+m3=S*(32/32);//weight of oxygen for sulphur (in g)
+total=m1+m2+m3;//total weight of oxygen required (in g)
+net=total-O;//net oxygen required (in g)
+W1=net*(100/23);//corresponding weight of air (in g)
+w1=C*(44/12);//weight of carbon dioxide in dry flue gas (in g)
+w2=S*(64/32);//weight of sulphur dioxide in dry flue gas (in g)
+w3=N;//weight of nitrogen in dry flue gas (in g)
+W2=w1+w2+w3;//total weight of dry flue gas (in g)
+T=W1*(77/100)+W2;//total weight of dry products (in g)
+W3=M-T/1000;//weight of excess air (in kg)
+P=(W3/W1)*100*1000;//percentage of excess air
+printf("The percentage of excess air used is %.1f.",P);
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