blob: 3c161203aba2f7b08cd3ceca961abd161c5b99b4 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
|
///Chapter No 11 Steam Boilers
////Example 11.16 Page No 247
///Find Theoretical draught produced in water
//Input data
clc;
clear;
hw=1.9; //Drauhgt water in cm
Tg=290+273; //Temp of flue gases in degree celsius
Ta=20+273; //Ambient temp in degree celsius
ma=22; //Flue gases formed in kg/Kg of coal
d=1.8; //Fuel burnt in m
pi=3.142;
g=9.81;
//Calculation
H=(hw/(353*(1/Ta-1/Tg*((ma+1)/ma))))*10; //Theoretical draught produced in water column in m
H1=round(H*(((Tg/Ta)*(ma/(ma+1))-1))); //Theoretical draught produced in hot gas column n m
V=sqrt(2*g*H1); //Velocity of tthe flue gases in the chimney in m/s
rhog=((353*(ma+1))/(ma*Tg)); //Density of flue gases in Kg/m^3
mg=rhog*((pi/4)*d^2)*V; //Mass of gas flowing through the chimney in Kg/s
//Output
printf('Theoretical draught produced in water column= %f m \n ',H);
printf('Theoretical draught produced in hot gas column= %f m \n',H1);
printf('Velocity of tthe flue gases in the chimney= %f m \n',V);
printf('Density of flue gases=%f Kg/m^3 \n',rhog);
printf('Mass of gas flowing through the chimney= %f Kg/s \n',mg);
|
