Steel stack design as per ASME STS-1Full description
A complete design of Chimney structure.
Steel stack design as per ASME STS-1Full description
chi
Descripción: This spreadsheet sheet is developed for design pad and chimney foundation
Tank Baffles formulas for Design and Calculation
Tank Baffles formulas for Design and CalculationDescripción completa
Full description
This spreadsheet sheet is developed for design pad and chimney foundation
ASGFFull description
fcnm
Chimney DesignFull description
chimney sample problemsFull description
chimney sample problems
material komponen
Full description
design calculation of boundary wall
Nitrogen Calculation for use with LPG tanks
COAL COMBUSTION CALCULATION
REACTANTS:
Coal
Component
C
H2
S
O2
N2
H2O
ash
yi
0.682
0.057
0.022
0.23
0.013
0
Mi
12.011
2.016
32.06
32
28.016
18.016
5.678
2.827
0.069
0.719
0.046
0.000
ni/100 kg fuel
Total 0
1.004
Air requirements for chemically correct complete combustion CO2
H2O
O2 from from fuel fuel N2 from from fuel fuel
SO2
Product
5.678
2.827
0.069
O2 required
5.678
1.414
0.069
AFc
8.847
0.046
H2O from fuel 0.000
N2 from air O2 required 24.221
-0.719
6.442
Products of chemically correct complete combustion Component
CO2
n wet x wet n dry x dry
H2O
5.678 0.173 5.678 0.189
SO2 (ppm)
2.827 0.086 0.000
0.069 2089 0.069 2286
N2
Total moles
24.267 0.739 24.267 0.809
32.841 0.997911 30.014
ni = mole number yi = mass fraction AF = Air fuel ratio in mass basis
Products With Excess Air Excess air
20.00%
Component
CO2
H2O
SO2 (ppm)
N2
O2
n wet
5.678
2.827
0.069
29.111
1.288
x wet
0.146
0.073
1761
0.747
0.033
n dry
5.678
0.069
29.111
1.288
x dry
0.157
1898
0.805
0.036
N2 28.016 0.702
O2 32.000 0.035
0.000
Total moles
M exhaust
38.974
29.82
36.146
30.74
10.6164331
AF
Calculations of mass fractions CO2 44.011 0.215
M y wet
H2O 18.016 0.044
SO2
Unit
Qty
64 0.00378
Flue gas flow calculation Item Flue gas temperature Flue gas flow Flue gas specific grafity Flue gas flow Flue gas specific grafity Gas volume as stack
o
C
Nm3/h kg/Nm3 kg/h kg/m3 m3/s
135 129000 1.2838 165610.2 0.85901324 53.5531136
Stack inner diameter
m
1 .8
Area of stack
m2
2.5434
Gas velocity*
m/s
21.0557182 OK
*recomended velocity to give an isokinetic flue gas flow in the stack outlet is above 20 m/s, a consideration should be made due to the flue gas
Page 1
ACID DEW POINT TEMPERATURE TEMPERATURE CALCULATION
Formulas for ADP Temperature calculation* :
1. Kp
2
= exp(12.12 / T x (1 – 0.942.T + 0.00702.T – 0.0108.T. Ln (1000. T) – 0.0013 / T )) 0.5
Description SO2 volume percent in wet flue gas SO2 removal eff. Corrected SO2 percent in wet flue gas O2 Volume percent in wet flue gas H2O volume percent in flue gas Equilibrium temperature Equilibrium constant
Symbol
Unit
SO2
%
0.176
µ
-
0.882
SO2 c
%
0.021
O2
%
3.306
H2O
%
7.25457263
T equilibrium
o
K/1000
Qty
1.273000
KP
-
0.017433
Partial pressure of SO3 Partial pressure of SO2
PSO3 PSO2
mmHg mmHg
1.20E-007 0.001761
SO3 conversion rate
PConv
%
0.006800
Partial pressure of SO3
PH2O
mmHg
Acid dew point temperature
T ADP
o
C
0.072546 98.089633
Page 2
Remarks 20.0 20.00% 0%
Exce Excess ss ai air
Chimney height CHIMNEY HEIGHT CALCULATION** Flue Gas
Symbol V Td Q
Reference flow Temperature Heat Release
Unit 3 m /s K MW
Value 53.5531136 408 5.65765652
Pollutant Index Calculation Pollutants
Emmisions Concentrations mg/Nm
Emmisions Concentrations
Discharge rate D
mg/m
g/s
Guideline Background Pollutant index Concentration Gd Concentration Bc Pi mg/m
mg/m
m /s
SO2
450
301.102941
16.125
0.365
0.080
56,578.95
NO2
750
501.838235
26.875
1.130
0.002
23,825.35
Particullate
120
80.2941176
4.3
0.150
0.050
43,000.00 56,578.95
Pollutant index Pi
Gd and Bc values are taken from Kep Kepala Bapedal No. 107 tahun 1997 Tentang: Perhitungan dan Pelaporan Serta Informasi Indeks Pencemaran Udara Pi for calculation purposes is maximum value in table above
Buoyancy Calculation
Description
Uncorrected stack height Minimum
Symbol a b Ub Ub min
Value -0.85944172 0.46044494 21.3252519 m 2.8893589
Momentum Calculation
Description Velocity Stack Diameter Momentum
Symbol w d M x y z Log(Um) Um Um min
Value 21.0557182 m/s 1.8 m 782.133804 -1.09833388 4.09459262 -13.2147367 1.40075571 25.1626114 6.91295597
Buildings
Affected radius Uncorrected height
5Um U A
Buildings and structure within 5Um Distance from stack Height Width (perpendicular to line of stack) Lesser of H or B H+1.5K Height T maximum Chimney height
H B K T Hm Tm C*
125.813057 m 21.3252519 m 1.17994439 A
B
47 60 61 60 150 Dont ignore 60 150 77.2046755
60 15 37 15 37.5 Dont ignore m m m
CORRECTED CHIMNEY HEIGHT =
77 m
**Based on HMIP Technical Guidance Note D1, June 1993
Page 3
C 125 15 30 15 37.5 Dont ignore
D 0 0 0 0 0 ignore
Unit m m m m m
Flue Gas Outlet Temperature Under Normal Condition Description * Flue gas temp. * Ambient temp. Heat conductivity of lining1 Heat conductivity of lining2 Heat conductivity of stack flue Outer radius of lining1 * Inner radius of lining1 * Thickness of linning1 Inner radius of lining2 Thickness of linning2 Outer radius of linning2 * Thickness of stack flue Outer radius of stack flue * Logarithmic mean radius of linning1 Logarithmic mean radius of linning2 Logarithmic mean radius of stack flue * Surface heat conductivity to ambient
Inner Surface heat conductivity of stack Coefficient of overall heat transmission Length of stack Gas flow Spesific heat Stack outlet gas temperature
Symbol T1 T2 lambda 1 lambda 2 lambda 3 R1 R2 t1 R3 t2 R2 t3 Ro rho1 rho2 rho3 alpha ln rho1 ln rho2 ln rho3 alpha i K L W C T
Unit
Remarks
Value
o
C C
o
o
kcal/mh C o kcal/mh C o kcal/mh C mm mm mm mm mm mm mm mm o kcal/m2h C kcal/m2hoC o kcal/m2h C m kg/h o kcal/mh C o
Outer Surface Temperature of Flue Under Normal Condition Description * Flue gas temp. * Ambient temp. Heat conductivity of lining1 Heat conductivity of lining2 Heat conductivity of stack flue * Inner radius of lining1 * Thickness of linning1 Outer radius of lining1 * Thickness of linning2 Outer radius of linning2 Inner radius of lining2 * Thickness of stack flue Outer radius of stack flue * Logarithmic mean radius of linning1 Logarithmic mean radius of linning2 Logarithmic mean radius of stack flue * Surface heat conductivity to ambient
Inner Surface heat conductivity of stack Coefficient of overall heat transmission Outer surface temperature of stack
Symbol T1 T2 lambda 1 lambda 2 lambda 3 R2 t1 R1 t2 R2 R3 t3 Ro rho1 rho2 rho3 alpha ln rho1 ln rho2 ln rho3 alpha i 1/K K T3
Unit
C C
o
o
kcal/mh C o kcal/mh C o kcal/mh C mm mm mm mm mm mm mm mm o kcal/m2h C kcal/m2hoC o
Flue Gas Outlet Temperature Under Worse Condition Description * Flue gas temp. * Ambient temp. Heat conductivity of lining1 Heat conductivity of lining2 Heat conductivity of stack flue Outer radius of lining1 * In Inner radius of lining1 * Thickness of linning1 Inner radius of lining2 Thickness of linning2 Outer radius of linning2 * Th Thickness of stack flue Outer radius of stack flue * Logarithmic mean radius of linning1 Logarithmic mean radius of linning2 Logarithmic mean radius of stack flue * Surface heat conductivity to ambient
Inner Surface heat conductivity of stack Coefficient of overall heat transmission Length of stack Gas flow Spesific heat Stack outlet gas temperature
Symbol T1 T2 lambda 1 lambda 2 lambda 3 R1 R2 t1 R3 t2 R2 t3 Ro rho1 rho2 rho3 alpha ln rho1 ln rho2 ln rho3 alpha i K L W C T
Unit o o
Value
C C o
kcal/mh C o kcal/mh C o kcal/mh C mm mm mm mm mm mm mm mm o kcal/m2h C kcal/m2hoC o kcal/m2h C m kg/h o kcal/mh C o
C
Remarks
199 35 0.22 0.70 40.00 894.00 844 ner dsteel flue
1800
50 844 0 844 6 900 1.0592 1.0000 1.0067 10 worst case wind velocity 1m/sec 0.0576 0.0000 0.0067 37 2.4697 77 165,610 0.26 194.51 94 Min ADP OK
Outer Surface Temperature of Flue Under Worse Condition Description * Flue gas temp. * Ambient temp. Heat conductivity of lining1 Heat conductivity of lining2 Heat conductivity of stack flue * In Inner radius of lining1 * Thickness of linning1 Outer radius of lining1 * Thickness of linning2 Outer radius of linning2 Inner radius of lining2 * Th Thickness of stack flue Outer radius of stack flue * Logarithmic mean radius of linning1 Logarithmic mean radius of linning2 Logarithmic mean radius of stack flue * Surface heat conductivity to ambient
Inner Surface heat conductivity of stack Coefficient of overall heat transmission Outer surface temperature of stack
Symbol T1 T2 lambda 1 lambda 2 lambda 3 R2 t1 R1 t2 R2 R3 t3 Ro rho1 rho2 rho3 alpha ln rho1 ln rho2 ln rho3 alpha i 1/K K T3
Unit o o
Value
C C o
kcal/mh C o kcal/mh C o kcal/mh C mm mm mm mm mm mm mm mm o kcal/m2h C kcal/m2hoC o
kcal/m2h C o
C
Page 5
Remarks
199 35 0.22 0.70 40.00 844 0 844 0 844 844 6 850 1.0000 1.0000 1.0071 10 worst case wind velocity 1m/sec 0.0000 0.0000 0.0071 37 0.1498 6.6735 0.0322 163.76 165 Max Temperature OK
