Procedure To Refer Burner Operating Condition In High Altitude Plants - Riello Burners RL 190/M Installation, Use And Maintenance Instructions

PROCEDURE TO REFER BURNER OPERATING CONDITION IN HIGH ALTITUDE PLANTS

- Find the corrected burner capacity for the plant's altitude in chart 1 and the corrected pressure in chart 2.
- Check in the firing rate graph of the burner (page 5), if the working point defined by the values above is within the range limits.
If not, higher burner size is needed.
Note
Charts are based only on altitude variation
(reference temperature = 68°F , 20°C)
To get the combined correction in case of different
air temperature, a compensation of 1000 ft each
20°F (305 m each 11°C) is applicable.
1 CORRECTED BURNER CAPACITY ACCORDING TO ALTITUDE
m. a.s.l.
Rated Capacity
ft a.s.l
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
5500
6000
6500
7000
7500
8000
8500
9000
9500
10000
Average barometric
mbar
Pressure (20°C)
Average barometric
"w.c.
Pressure (68°F)
2 CORRECTED BURNER AIR PRESSURE ACCORDING TO ALTITUDE
m. a.s.l.
Rated Pressure
ft a.s.l
0,50
1,00
1,50
2,00
2,50
3,00
3,50
4,00
4,50
5,00
5,50
6,00
6,50
7,00
7,50
8,00
8,50
9,00
9,50
10,00
Average barometric
mbar
Pressure (20°C)
Average barometric
"w.c.
Pressure (68°F)
Reference conditions (Charts 1-2): Ambient temperature 68 °F (20 °C) - Barometric pressure 394" WC (1000 mbar) - Altitude 328 ft a.s.l. (100 m a.s.l.)
Example
Rated capacity = 3000 MBtu/hr - Rated air pressure = 1.5"w.c.
Real altitude = 5000 ft - Real temperature = 108°F
∆ = 108°F - 68°F (reference temp.) = 40°F (equivalent 2000 ft variation)
Proceeding as descripted above and considering a "virtual altitude" of (5000 + 2000) ft:
- the corrected capacity is 3847 MBtu/hr;
- the corrected burner air pressure is 1.92.
0 100 305
0 328 1000
494 500 512
987 1000 1023
1481 1500 1535
1974 2000 2046
2468 2500 2558
2962 3000 3069
3455 3500 3581
3949 4000 4092
4442 4500 4604
4936 5000 5116
5429 5500 5627
5923 6000 6139
6417 6500 6650
6910 7000 7162
7404 7500 7673
7897 8000 8185
8391 8500 8697
8885 9000 9208
9378 9500 9720
9872 10000 10231
1013 1000 977,4
399 394 385
0 100 305
0 328 1000
0,49 0,50 0,51
0,99 1,00 1,02
1,48 1,50 1,53
1,97 2,00 2,05
2,47 2,50 2,56
2,96 3,00 3,07
3,46 3,50 3,58
3,95 4,00 4,09
4,44 4,50 4,60
4,94 5,00 5,12
5,43 5,50 5,63
5,92 6,00 6,14
6,42 6,50 6,65
6,91 7,00 7,16
7,40 7,50 7,67
7,90 8,00 8,18
8,39 8,50 8,70
8,88 9,00 9,21
9,38 9,50 9,72
9,87 10,00 10,23
1013 1000 977,4
399 394 385
Altitude
610 915 1220
2000 3000 4000
530 551 571
1061 1101 1142
1591 1652 1713
2121 2202 2284
2652 2753 2855
3182 3303 3425
3712 3854 3996
4243 4404 4567
4773 4955 5138
5303 5505 5709
5834 6056 6280
6364 6606 6851
6894 7157 7422
7425 7708 7993
7955 8258 8564
8485 8809 9135
9016 9359 9705
9546 9910 10276
10076 10460 10847
10607 11011 11418
942,8 908,2 875,8
371 358 345
Altitude
610 915 1220
2000 3000 4000
0,53 0,55 0,57
1,06 1,10 1,14
1,59 1,65 1,71
2,12 2,20 2,28
2,65 2,75 2,85
3,18 3,30 3,43
3,71 3,85 4,00
4,24 4,40 4,57
4,77 4,95 5,14
5,30 5,51 5,71
5,83 6,06 6,28
6,36 6,61 6,85
6,89 7,16 7,42
7,42 7,71 7,99
7,96 8,26 8,56
8,49 8,81 9,13
9,02 9,36 9,71
9,55 9,91 10,28
10,08 10,46 10,85
10,61 11,01 11,42
942,8 908,2 875,8
371 358 345
15
Burner RL 190/M is OK
1525 1830 2135
5000 6000 7000
593 616 641
1186 1232 1282
1778 1848 1924
2371 2464 2565
2964 3079 3206
3557 3695 3847
4149 4311 4488
4742 4927 5130
5335 5543 5771
5928 6159 6412
6520 6775 7053
7113 7391 7694
7706 8006 8335
8299 8622 8977
8892 9238 9618
9484 9854 10259
10077 10470 10900
10670 11086 11541
11263 11702 12183
11855 12318 12824
843,5 811,85 779,8
332 320 307
1525 1830 2135
5000 6000 7000
0,59 0,62 0,64
1,19 1,23 1,28
1,78 1,85 1,92
2,37 2,46 2,56
2,96 3,08 3,21
3,56 3,70 3,85
4,15 4,31 4,49
4,74 4,93 5,13
5,33 5,54 5,77
5,93 6,16 6,41
6,52 6,77 7,05
7,11 7,39 7,69
7,71 8,01 8,34
8,30 8,62 8,98
8,89 9,24 9,62
9,48 9,85 10,26
10,08 10,47 10,90
10,67 11,09 11,54
11,26 11,70 12,18
11,86 12,32 12,82
843,5 811,85 779,8
332 320 307
2440
8000
669
1337
2006
2675
3343
4012
4680
5349
6018
6686
7355
8024
8692
9361
10029
10698
11367
12035
12704
13373
747,8
294
2440
8000
0,67
1,34
2,01
2,67
3,34
4,01
4,68
5,35
6,02
6,69
7,35
8,02
8,69
9,36
10,03
10,70
11,37
12,04
12,70
13,37
747,8
294