b
The stack must guarantee the minimum draught specified by applicable technical standards, assuming zero
pressure at the connection to the flue gas exhaust.
b
Values obtained with
R
gas burners, calibrated with CO
2
= 9,7%,
λ
= 1,2 and with
R
fuel oil burners calibrated
with CO
2
= 12,5%.
DESCRIPTION
RTQ 3S
2700
3000
3500
4000
Fuel
OIL/GAS
Rated heat input
min
2401
2701
3001
3501
kW
max
2700
3000
3500
4000
kW
Rated useful heat output Pn
min
2310
2598
2887
3368
kW
max
2576
2862
3339
3816
kW
Useful efficiency at minimum Pn
96,2
96,2
96,2
96,2
%
Useful efficiency at maximum Pn
95,4
95,4
95,4
95,4
%
Useful efficiency at 30% max. Pn
96,7
96,7
96,7
96,7
%
Constant pressure drop
< 0,1
%
Flue gas temperature (∆T)
100÷120
°C
Flue gas mass flow rate
1,10
1,26
1,43
1,63
kg/sec
Furnace pressure
8,0
6,5
7,1
8
mbar
Furnace volume
2729,8
3256,9
3743
4235
dm
3
Total volume of flue gas side
3648
4464
5140
5847
dm
3
Total surface area for heat exchange
69,36
80,11
94,66
108,3
m
2
Volumetric heat load
989
921
935
945
kW/m
3
Specific heat load
37,1
35,7
35,3
35,2
kW/m
2
Maximum operating pressure
6
bar
Maximum admissible temperature
95
°C
Maximum operating temperature
85
°C
Min. admissible water return temp.
55
°C
Pressure drop ∆T 10°C
190
230
240
280
mbar
Pressure drop ∆T 20°C
40
50
55
65
mbar
Water capacity
2700
2750
3650
4075
litri
Turbulators
106
119
130
140
n°
TECHNICAL DATA
12
GENERAL
