NATURAL GAS / LIGHT OIL DUAL FUEL BURNERS
29
4)
Pipe dimension table in accordance to UNI-CIG 7129-72 norms
Capacity in volume (consumption) in m
3
/h for propane (L.P.G.) with density of 1,56 (according to UNI 7128-
72), calculated for a maximum load loss of 0,5 mbar.
Outer
diameter
3/8 Gas
1/2 Gas
3/4 Gas
1 Gas
1
1
/
4
Gas
1½ Gas
2 Gas
2 ½ Gas
3 Gas
Inner
diameter* mm
13,2
16,6
22,2
27,9
36,6
41,5
53,8
69,6
81,8
Flow rate in m
3
/h
2
1,5
2,7
6,0
11
23
35
-
-
-
4
1,0
1,8
4,1
7,4
15
24
45
82
135
6
0,8
1,5
3,2
6,1
12
19
35
66
108
8
0,7
1,3
2,8
5,2
10,6
16,4
30
58
92
10
0,6
1,1
2,6
4,7
9,5
14,5
27
52
81
15
0,5
0,9
2,0
3,8
7,6
11,5
21,5
43
65
20
0,4
0,78
1,7
3,2
6,4
9,8
18,4
36
55
25
0,32
0,69
1,5
2,9
5,7
8,7
16,1
32
49
30
-
0,62
1,4
2,6
5,1
8,0
14,7
29
45
40
-
0,55
1,2
2,2
4,5
6,8
12,5
25
38
50
-
0,46
1,05
2,0
3,8
6,1
11,1
22
34
60
-
-
-
1,8
3,5
5,5
10
20
30
80
-
-
-
1,5
3,0
4,6
8,6
17
26
100
-
-
-
-
2,7
4,2
7,6
15
23
* inner diameter of pipe UNI 3824-68 taken as basis for calculation
V
irtual length m.
For pressure loss of 1 mbar flow rates must be increased by 45%;
For pressure loss of 2 mbar flow rates must be increases by 110%.
5) Burner
The burner must be ordered specifically for use with liquid gas (L.P.G.) so that it is equipped with gas valves of
sufficient dimensions to ensure correct ignition and gradual regulation. Our valves have dimension is planned
for use at a supply pressure of about 300 mm.W.G.
We suggest gas pressure be checked at the burner by using a water column pressure gauge.
N.B. Maximum and minimum burner pressure (Kcal/h) obviously remains that of the original natural gas
burner (L.P.G. has heating power superior to that of natural gas.
Therefore, in order to burn fully, it requires air quantity in proportion to the thermal power created).
6) Combustion control
To limit consumption and avoid serious trouble, adjust combustion by using the appropriate instruments.
It is absolutely essential to check that the percentage of carbon monoxide (CO) does not exceed maximum
permitted value of 0,1 % (use a Phil analyser or other similar instrument). Please note that our guarantee does
not cover burners operating on liquid gas (L.P.G.) in plant for which the above measures have not been taken.
Summary of Contents for Minicomist 7
Page 17: ...BRUCIATORI MISTI DI GAS GASOLIO 17...
Page 18: ...BRUCIATORI MISTI DI GAS GASOLIO 18 18...
Page 30: ...30 NATURAL GAS LIGHT OIL DUAL FUEL BURNERS...
Page 31: ...NATURAL GAS LIGHT OIL DUAL FUEL BURNERS 31...
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