Calculation
To calculate the energy required we use the formula Q = m x c x Δt.
Q = energy required
m = mass of the medium to be heated
c = heat capacity of the medium to be heated (constant for water)
Δt = temperature difference between start and end temperature
The amount of fuel can be calculated from the energy required and the energy content of the
fuel. The energy content of the fuel varies according to the type of wood and the water con‐
tent. (
⇨ See "Fuel table" [page 48]
)
Right amount of fuel
The following tables give you an idea of the required amount to heat the thermal stor‐
age.
The calculation of the tables below is based on the formula above and as fuel hard‐
wood with a water content of w=20% is in use. It does not take into account pipe loss‐
es and energy required to heat the boiler and heating system.
Example: Heat a 600 gal thermal storage from actual 130 °F average temperature to
100% charge.
Answer: 82 lbs
Example: Heat a 600 gal thermal storage about 40 °F
Answer: 68 lbs
Heating the boiler
5
Before heating up the boiler
Owner´s Manual S3 Turbo | B1390016_en-us
47
