Calculation Of The Thermal Power - LA NORDICA FOCOLARE 60 PIANO Instructions Pour L'installation, L'utilisation Et L'entretien

15. CALCULATION OF THE THERMAL POWER

There is not an absolute rule for calculating the correct necessary power. This power is given according to the space
to be heated, but it depends also largely on the insulation. On an average, the calorific value necessary for a properly
insulated room is 40 kCal/h per m
Given that 1 kW corresponds to 860 kCal/h, it is possible to adopt a value of 50 W/m
Let's suppose one wishes to heat a room of 150 m
necessary to have 150 m
Fuel
Dry wood (15% humidity)
Wet wood (50% humidity)
Wood briquettes
Brown coal briquettes
Normal anthracite
Coke
Natural gas
Naphtha
Electricity
28
3
(for an external temperature of 0 ° C).
3 3
x 50 W/m = 7500 W or 7.5 kW. As main heating, a 10 kW device is therefore sufficient.
Unit
kg
kg
kg
kg
kg
kg
m3
L
kW/h
3
(10 x 6 x 2.5 m) in an insulated apartment. In this case, it is
Approximate combustion value
kCal
3600
1850
4000
4800
7700
6780
7800
8500
860
FOCOLARI in ghisa
.
3
Required quantity in relation
to 1 kg of dry wood
kW Fuel
4.2
2.2 1.00
5.0 1.95
5.6 0.84
8.9 0.75
7.9 0.47
9.1 0.53
9.9 0.46
1.0 0.42
6097000 Rev.12 – EN