False Air Caluculation
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description
False Air Caluculation
Transcript of False Air Caluculation
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HOT AIR VOLUME ESTIMATION BASED ON OXYGEN LEVELS
62
Fan inlet pressure (mmwg) -274
12534
9809
18.6
17.9
2215
Leakage across mill outlet to CA fan inlet (%) 22.58
7594
16.1
17.9
Leakage air through Mill Table feeder (%) 36.73
Leakage air quantity throgh Mill table feeder (NM3/hour) 2790
4804
CROSS CHECKING OF CALCULATION
4804
450
Mill inlet pressure (mmwg) -15
12913
2790
Mill inlet temperature (cold air temp) 45
Mill inlet pressure (mmwg) -15
3298
7594
66
mill outlett pressure (mmwg) -127
9676
9809
62
CA fan inlet pressure (mmwg) -274
12534
Fan inlet temperature (0C)
Coal mill CA fan volume (M3/hour)
Coal mill CA fan volume (NM3/hour)
CA fan inlet O2 %
Mill outlet O2 %
Leakage volume mill outlet to CA fan inlet (NM3/hour)
Net Volume at mill outlet (NM3/hour)
Mill inlet O2 %
Mill outlet O2 %
Furnace Hot air volume (NM3/hour)
Hot air volume (NM3/hour)
Hot air temperature (0C)
Hot air volume (M3/hour)
Mill inlet leakage air volume (NM3/hour)
Mill inlet leakage air volume (M3/hour)
Mill outlet volume (NM3/hour)
Mill outlet temperature (0C)
Mill outlet volume (M3/hour)
CA fan inlet volume (NM3/hour)
CA fan inlet temperature (0C)
CA fan volume (M3/hour)
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HOT AIR VOLUME ESTIMATION BASED ON OXYGEN LEVELS
62
Fan inlet pressure (mmwg) -274
12534
9809
18.6
17.9
2215
Leakage across mill outlet to CA fan inlet (%) 22.58
7594
16.1
17.9
Leakage air through Mill Table feeder (%) 58.06
Leakage air quantity throgh Mill table feeder (NM3/hour) 4409
3185
CROSS CHECKING OF CALCULATION
3185
450
Mill inlet pressure (mmwg) -15
8560
4409
Mill inlet temperature (cold air temp) 45
Mill inlet pressure (mmwg) -15
5212
7594
66
mill outlett pressure (mmwg) -127
9676
9809
62
CA fan inlet pressure (mmwg) -274
12534
Fan inlet temperature (0C)
Coal mill CA fan volume (M3/hour)
Coal mill CA fan volume (NM3/hour)
CA fan inlet O2 %
Mill outlet O2 %
Leakage volume mill outlet to CA fan inlet (NM3/hour)
Net Volume at mill outlet (NM3/hour)
Mill inlet O2 %
Mill outlet O2 %
Furnace Hot air volume (NM3/hour)
Hot air volume (NM3/hour)
Hot air temperature (0C)
Hot air volume (M3/hour)
Mill inlet leakage air volume (NM3/hour)
Mill inlet leakage air volume (M3/hour)
Mill outlet volume (NM3/hour)
Mill outlet temperature (0C)
Mill outlet volume (M3/hour)
CA fan inlet volume (NM3/hour)
CA fan inlet temperature (0C)
CA fan volume (M3/hour)
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Date: 11-08-2004
643 Delta P 2.832 K 0.85721 area 0.2827431 gas density STP 1.365
2.83pressure -17Temp 531gas density at given temp. 0.456628
Volume M3/hour 9621Volume NM3/hour 3219
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densityo2 14.1 1.427679 20.13028 6.441688co 0.0197 1.963059 0.038672 0.010828co2 5.7 1.963059 11.18944 4.923351N2 68.64162 19.21965
30.595521.365018
Sheet1 (2)Sheet1Sheet2
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