From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001
From: priyanka
Date: Wed, 24 Jun 2015 15:03:17 +0530
Subject: initial commit / add all books

---
 32/CH11/EX11.15/11_15.sce | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100755 32/CH11/EX11.15/11_15.sce

(limited to '32/CH11/EX11.15/11_15.sce')

diff --git a/32/CH11/EX11.15/11_15.sce b/32/CH11/EX11.15/11_15.sce
new file mode 100755
index 000000000..27a8dd8ec
--- /dev/null
+++ b/32/CH11/EX11.15/11_15.sce
@@ -0,0 +1,38 @@
+//pathname=get_absolute_file_path('11.15.sce')
+//filename=pathname+filesep()+'11.15-data.sci'
+//exec(filename)
+//Atmospheric air temperature: 15C
+//Steam generation: 40 bar, 400C
+//Steam generated per kg of coal = 8 kg
+//Feed water temperature at inlet to economiser = 27C
+//Feed water temperature at exit of economiser = 137C
+//Moisture in coal burnt = 1.5%
+//Flue gas temperature entering air heater =300C
+//Flue gas temperature leaving air heater and entering chimney = 150C
+//Temperature of air entering boiler furnace = 120C
+//Dry coal composition by mass = 84% C, 4% H2, 7% O2 and remainder ash
+//Dry flue gas composition by volume = 12.5% CO2, 7.5% O2, 80% N2
+//Datum temperature = 15C
+//Calorific value of coal = 32600 kJ/kg
+//For air and dry flue gas, cp =1.0032 kJ/kg K
+//Partial pressure of vapour in flue gas = 0.075 bar
+//Specific pressure of vapour = 2.0064 kJ/kg K
+//Mass of dry flue gas per kg of coal:
+md=0.84/0.0495
+//H2O produced during the combustion(in kg):
+mh=0.04*9
+//Amount of air supplied for combustion of one kg of dry coal(in kg):
+ma=16.97-(1-0.05-0.36)
+//Moisture per kg of dry coal(in kg):
+m=0.015/(1-0.015)
+//Total moisture per kg of coal(in kg):
+mt=mh+m
+//Steam generated per kg of dry coal(in kg steam):
+ms=8/(1-0.015)
+//Boiler efficiency:
+n=25178.01/32600*100
+//Efficiency of heat exchange in air heater:
+na=1725.4/2897.67*100
+printf("\n RESULT \n")
+printf("\nBoiler efficiency = %f percent",n)
+printf("\nEfficiency of heat exchange in air heater = %f percent",na)
-- 
cgit