| SMART BOILERS OPERATING DATA |
| Marking |
|
250 |
| Nominal power Pn |
kW |
250 |
| Partial load (power) Pp |
kW |
65 |
| Boiler efficiency at Pn |
% |
>95 |
| Boiler class |
|
5 |
| Water volume |
l |
500 |
| Diameter of water connection |
“ |
3 |
| Diameter of water connection |
DN |
80 |
Hydraulic-pressure drop of the boiler
at the temperature fall 20° |
mbar
|
87
|
| Boiler temperature |
°C |
60–90° |
| Minimal temperature of returnable water |
°C |
55 |
| Maximal operational pressure |
bar |
3,5 |
| Test pressure |
bar |
6,5 |
| Temperature of furnace |
°C |
900–1100 |
| Pressure of furmace |
mbar |
-0,04 |
| Required draught of the chimney |
mbar |
0,2 |
| Requirement for the forced draught |
|
Yes |
| Combustion temperature at Pn |
°C |
96,6 |
| Combustion temperature at Pp |
°C |
63,1 |
| Diameter of flue gas duct |
mm |
220 |
| Diameter of chimney |
mm |
250 |
| Wood pellets – C1 |
Tested
fuel |
D6, M10, A1,5, DU90,0 |
| Wood chips – B1 |
P45, M30, A3.0 |
| Electrical connection |
|
3+N+PE 50Hz 230/400V TN-C-S |
| Conveyor engine |
W |
550 |
| Feeding auger engine |
W |
550 |
| Exchanger cleaning engine (s) |
W |
550 |
| Ash-removing engine |
W |
550 |
| Fan of primary air |
W |
66 |
| Fan of secondary air 1 |
W |
66 |
| Fan of secondary air 2 |
W |
66 |
| Chimney exhaust fan |
W |
300 |
| Electrical ignition |
W |
1600 |
| Separation flap valve |
W |
6,5 |
|
| Wood pellets |
Wood chips |
| Rated |
Minimum |
Rated |
Minimum |
| Rated heat capacity |
kW |
250 |
250 |
250 |
250 |
Combustion product
temperature |
°C |
100,4 |
66,9 |
98,6 |
63,1 |
| Fuel consumption |
kg/hour |
56,90 |
14,20 |
62,70 |
15,60 |
| Input water temperature |
°C |
57,9 |
62,4 |
59,4 |
59,1 |
| Outlet water temperature |
°C |
75,7 |
78,9 |
76,1 |
76,4 |
| Cooling water temperature |
°C |
9,6 |
11,1 |
9,6 |
11,0 |
| Cooling water flow rate |
m3/hod |
12,400 |
3,300 |
13,600 |
3,130 |
| Draught behind boiler |
Pa |
128,0 |
28,0 |
128,0 |
28,0 |
| Ambient temperature |
°C |
24,3 |
23,1 |
25,7 |
23,3 |
| Relative air humidity |
% |
43,7 |
44,0 |
44,1 |
43,9 |
| Barometric pressure |
kPa |
99,21 |
99,30 |
99,10 |
99,30 |
| Oxygen O2 |
% |
7,45 |
11,77 |
7,43 |
11,59 |
| Carbon dioxide CO2 |
% |
11,56 |
8,51 |
12,10 |
8,53 |
| Carbon monoxide CO |
ppm |
55 |
162 |
75 |
169 |
| Higher hydrocarbons OGC |
ppm |
3 |
5 |
4 |
6 |
| Nitrogen dioxides NOx |
ppm |
80 |
52 |
86 |
50 |
| Dust |
mg/m3 |
33 |
26 |
34 |
41 |
| Carbon monoxide CO |
mg/m3 |
55 |
243 |
77 |
246 |
| Higher hydrocarbons OGC |
mg/m3 |
1 |
3 |
2 |
4 |
| Nitrogen dioxides NOx |
mg/m3 |
134 |
128 |
143 |
121 |
| Dust |
mg/m3 |
26 |
31 |
28 |
48 |
| Mass flow rate gases |
kg/sec |
0,167 |
0,055 |
0,160 |
0,055 |
| Stoichiometric oxygen value |
m3/kg |
0,958 |
0,957 |
0,832 |
0,831 |
| Stoichiometric air value |
m3/kg |
4,560 |
4,557 |
3,963 |
3,953 |
| Stoichiometric volume of dry combustion products |
m3/kg |
4,449 |
4,446 |
3,883 |
3,874 |
| Stoichiometric air multiple |
|
1,54 |
2,25 |
1,54 |
2,25 |
| Volume of dry combustion products, actual |
m3/kg |
7,315 |
10,021 |
6,217 |
8,779 |
| Volume of H2O in the combustion air |
m3/kg |
0,095 |
0,133 |
0,091 |
0,172 |
| Volume of H2O in the combustion produts |
m3/kg |
0,949 |
0,988 |
0,937 |
0,959 |
| Maximum volume CO2 |
% |
19,01 |
19,00 |
19,37 |
19,40 |
| Loss of sensible heat of combustion products (chimney) |
% |
5,2 |
4,0 |
4,7 |
3,5 |
| Loss of gas underburning |
% |
0,0 |
0,1 |
0,0 |
0,1 |
| Loss of mechanical underburning |
% |
0,0 |
0,1 |
0,3 |
0,5 |
| Loss of heat transfer into the environment |
% |
0,7 |
1,6 |
0,7 |
1,6 |
| Total loss |
% |
6,0 |
5,8 |
5,7 |
5,7 |
| Efficiency – indirect method |
% |
94,0 |
94,2 |
94,3 |
94,3 |
| Heat input |
kW |
261,5 |
65,3 |
268,1 |
66,8 |
| Heat capacity |
kW |
248,8 |
62,2 |
255,4 |
63,7 |
| Uncertainty of determining heat capacity |
% +/- |
10,4 |
2,6 |
10,7 |
2,7 |
| Efficiency – direct method |
% |
95,0 |
95,0 |
95,3 |
95,4 |
| Capacity / rated output |
% |
99,5 |
24,9 |
102,0 |
25,5 |
|
