30
Bentone
M
=
100
=
0.1 m
3
1000
t
=
1
+
10
=
0.0194 h
60
3600
V
=
M
=
0,1
≈
5.1 m
3
/h
t
0.0194
Calculation example:
t = 1 min 10 s
M = 100 dm
3
(litre)
V
=
M
[m
3
/h]
t
6.5 Calculating the quantity of gas
supplied
The quantity of gas supplied can be calculated if the system is equipped with
a gas flow meter of some type. The procedure here is usually to measure
how long it takes for the burner to consume a certain quantity of gas.
To measure:
t = Time for a certain quantity of gas consumed by the burner.
[h]
M = Quantity of gas consumed.
[m
3
]
V = Actual gas flow
[m
3
/h]
V
=
V
0
.
f
V
A
=
V
0A
.
f
=
5.9
.
0.90
≈
5.2 m
3
/h
V
B
=
V
0B
.
f
=
5.8
.
0.90
≈
5.2 m
3
/h
V
C
=
V
0C
.
f
=
5.9
.
0.90
≈
5.3 m
3
/h
This means that the quantity of gas read from the gas meter should actually
be read off as 1.11 . the calculated flow in a normal state.
f
=
273
.
945+15
≈
0.90 Nm
3
/h
273+15
1013.25
Calculation example:
T = 15°C
B = 945 mbar
P = 15 mbar
Summary of Contents for STG 120/2
Page 17: ...17 Bentone 4 9 Gas nozzle Inner assembly Natural LPG Natural gas LPG 2 5 8...
Page 35: ...35 Bentone 172 615 76 2020 10 16 2 9 1 Wiring diagram Gas burner control LME21...
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