Sime 2R12 - 1.4 Loss of Head

25
1.4 LOSS OF HEAD
1.3.2 “2R/2R GT” boiler
Fig. 2
NOTE: The losses of head shown in the diagram were obtained with a Δt of 10°C
“1R” boiler
“2R/2R GT” boilers
6789101112131415
Output kW 100.6 123.8 147.1 165.1 179.7 197.7 213.4 230.2 248.8 266.9
kcal/h 86,500 106,500 126,500 142,000 154,500 170,000 183,500 198,000 214,000 229,500
Input kW 113.5 139.1 164.7 184.1 199.7 219.7 237.1 255.8 276.4 296.7
kcal/h 97,600 119,700 141,600 158,300 171,700 188,900 203,900 220,000 237,700 255,200
P (depth) mm 735 835 935 1,035 1,135 1,235 1,335 1,435 1,535 1,635
Sections n° 6 7 8 9 10 11 12 13 14 15
Max. water head bar 5 5 5 5 5 5 5 5 5 5
Water content l92107122136151165180194209223
Loss of head
Smoke mbar 0.10 0.15 0.22 0.29 0.24* 0.37* 0.39* 0.42* 0.49* 0.50*
Water (Δt 10°C) mbar 61.0 76.0 85.0 92.0 100.0 1,120 118.0 121.0 125.0 130.0
Comb. chamb. press. mbar – 0.02 – 0.02 – 0.01 – 0.02 – 0.02 – 0.01 – 0.02 0.31 0.35 0.50
Suggested chimney depress. mbar 0,12 0,17 0,23 0,31 0,26 0,38 0,41 0,73 0,84 1,00
Smokes temperature °C 238 236 234 232 229 224 219 215 211 207
Smokes flow m
3
n/h 105.2 129.2 153.3 171.9 186.9 205.4 221.6 238.9 257.9 276.6
Adjustment range
Heating °C 30÷85 30÷85 30÷85 30÷85 30÷85 30÷85 30÷85 30÷85 30÷85 30÷85
Smoke volume dm
3
83 92 101 110 119 128 138 147 157 167
Weight kg 462 520 578 636 676 734 792 850 908 966
12345678
0
10
20
30
40
50
Portata m
3
/h
Δp mbar
1R 8
1R 7
1R 6
1R 9
4 5 6 7 8 9 10 11 12
13
14 15 16 17 18 19
0
20
40
60
80
100
Portata m
3
/h
Δp mbar
2R 6
2R 7
2R 9
2R 8
120
20 21 22 23
140
2R 10
2R 11
2R 12
2R 13
2R 14
2R 15
* Without baffles
Flow m
3
/h
Flow m
3
/h