Subido por Roger Antonio Urbina Vallejos

Calc 1 - Boiler Efficiency.xls

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Plant…………….
Performance at Tested Air Heater Leakage
Unit……………..
Location………..
Date……………..
Furnace Data @ Tested AH Leakage:
Fuel Data:
Heat Input
Steam Flow
Fuel Flow
Carbon
Hydrogen
Sulfur
Blend Coal A Coal B Units
0%
Blend Fraction 100%
51.04
51.04
0.00
C
%
H2
3.64
3.64
0.00
%
Oxygen
S
O2
Nitrogen
N2
Moisture
H2O
0.29
12.74
0.66
26.57
5.06
Ash
Other
Total:
HHV
Moisture in
Air
0.29
12.74
0.66
26.57
5.06
0.00
0.00
100.00
100.00
8,867
8,867
%
%
Air Heater Exit Gas Data @ Tested AH Leakage:
0.00
%
Excess O2
0.00
%
(% by Vol)
Excess O2 Measurement Basis: 1 = Wet, 0 = Dry
0.00
%
AH Gas Exit Temp Corrected (Measured)
0.0000 (lb/100lb fuel)
80
F
O
F
60
Radiation and convection (Default = .17)
Unaccounted for losses (Default = 0.50)
Ash Location
Bottom Ash
Economizer Ash
Air Heater
Ash
Precipitator Ash
Baghouse Ash
Dust Collector Ash
(Must
Total
100%)
F
O
0.17
0.50
pph
1
Furnace Excess Air
Wet Gas Flow Leaving
Furnace
3,625
%
F
AH Gas Exit Temp Corrected (Measured)
F
AH Gas Exit Temp Uncorrected (ie, No Leakage)
To correct the efficiency for "Uncorrected AH Gas
O
O
Out Temp" enter "1" at right. If not, leave blank.
361,584
9.97
9.52
We
392
2,982
Total Air Flow
Air Heater Exit Gas Data @ Design (or other) AH Leaka
Excess O2
9
(% by Vol)
Excess O2 Measurement Basis: 1 = Wet, 0 = Dry
1
Out Temp" enter "1" at right. If not, leave blank.
We
Flue Gas Constituents:
Oxygen (O2)
%
Carboc Dioxide (CO2)
%
Sulfur Dioxide (SO2)
Moisture (H2O)
Ash
Split
(%)
20
5
LOI
(%)
0.26
0.26
0
75
0
0
0.00
0.26
0.00
0.00
100
Economizer Exit Gas Data:
2.50
1
O
349
AH Gas Exit Temp Uncorrected (ie, No Leakage)
To correct the efficiency for "Uncorrected AH Gas
Ash Data:
Ex
4.26
1
321
%
3
Heat Input
Steam Flow
Fuel Flow
pph
%
%
Air Heater Leakage (pph)
Air Heater Leakage (%) (Mass
Method)
Air Heater Leakage (%) O2 Method)
2,122
5,748
3,987,536
pph
We
1,271,016
acfm
We
5
5
O
60
Boiler Efficiency Losses, Manual Input:
Total Ash
3,625,951
Air Heater Leakage (pph)
Air Heater Leakage (%) (Mass
Method)
Air Heater Leakage (%) O2 Method)
Air, Gas & Fuel Temperatures:
Calculation Reference Temp
FD Fan Inlet Air
Temp
Fuel Temperature (Default = Tref)
15.56
0.00
0.0135 (lb/lb dry air)
Additional Moisture
Total Air Flow
0.00
%
0.00
%
0 Btu/lbm
Furnace Data @ Design (or other) AH Leakage:
3,476 MBtu/hr
0 pph
392,027 pph
2,982,562 pph
Furnace Excess Air
Wet Gas Flow Leaving
Furnace
0.00
Performance at Design (or other) Air Heater L
%
(% by Volume)
4.26
%
12.93
%
Carboc Dioxide (CO2)
0.02753
%
11.93
%
Sulfur Dioxide (SO2)
Moisture (H2O)
70.85
%
Nitrogen (N2)
100.00
%
Total
Nitrogen (N2)
Total
1,637
Flue Gas Constituents:
Oxygen (O2)
Boiler Efficiency Heat Losses @ Tested AH Leakage:
(% by Volume)
0.01
7
10
Boiler Efficiency Heat Losses @ Design (or other) AH
Los
6.17
%
Los
Los
Los
Los
7.71
0.02
%
%
%
Los
Los
Los
Los
0.17
%
Los
Ma
0.50
%
Ma
Tot
14.72
%
Tot
14
Boi
85.28
%
Boi
8
0.14
Fuel Flow Determination Data:
For total fuel flow determination enter at least one of the
392,027
Gr
are for input data, to be completed by user.
pph
OR
Gr
NOTES:
yellow/red cells
following groups:
MBtu/hr
OR
Group C: For non-reheat units, enter all of the following:
Steam Flow
pph
Steam Enthalpy
pph
Feedwater Enthalpy
pph
Design (or other) data set does not need to be completed. It is just available for
comparison.
Fuel flow and heat input are not used to calculate boiler efficiency, but are necessary for calculation of air and
Fuel Flow determination will attempt to access Group A data first, Group B data second, and Group C data last.
Heat Input determination will attempt to access Group B data first, Group A data second, and Group C data last.
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