26
Table 12
Methane
LPG
35
82
52
45
96
67
EXHAUST/AIR DUCTS DESIGN PARAMETERS
CO
2
fumes %
9,4-9,6
10,7
Mod.
Exhaust temperature°C
Exhaust mass flow rate kg/h
Table 13
elbow 15°
elbow 45°
elbow 87°
Coaxial adapter
u.m.
m
m
m
m
35-45
0,5
0,9
1,1
3,2
Mod.
Corresponding Lenght Ø60
DESIGN PARAMETERS USING A2B ACCORRONI's DUCTS Ø 60 / Ø 80
6.4 EXEMPLE OF CALCULATION
First linea sector
= 7m
Elbow 90°
= 0,9 m.
Linea sector
= 3 m.
Elbow 45°
= 0,5 m.
Linea sector
= 2 m.
Elbow 45°
= 0,5 m.
Linea sector
= 2 m.
Total meter
= 15,9 m.
The maximal length of the piping model 35, type C13,
is 20m..
If the total length exceeds 20 m the way should be
modified or using the pipes of bigger diameter, 80 mm,
which can reach 40 m of length.
The total pipe charge’s loss will exceed the loss of
maximal allowed charge (219Pa > 200Pa), in this
case the installation is not permitted.
This installation will be correct if:
- reduce the length of the piping air/fumes;
- increase the piping diameter, Ø 80 mm.
INSTALLATION TYPE C13 - SPLITTED DUCTS Ø 60
Fig. 18
WARNING!
the above mentioned length shall be considered for straight
duct. Otherwise the pressure drop shall be calculated.
MAXIMUM LENGHT ALLOWED (m)
Mod.
35
45
AIR DUCT
18
18
EXHAUST FLUE
18
18
