Wood requirement The firewood requirement It is advantageous to keep at least one daily ration of firewood at the stove to maximise the heating energy. The drier the wood, the more energy and cleaner combustion. 1 kg firewood has brutto ca. 5 kWh (kilo-Watt-hours) energy. Approx. 1 kWh is lost to the evaporation of the water in the wood. The netto ca. 4 kWh is available for heating. A comparison: a heating radiator will typically have 1 kWh output. 1 kg firewood equals 4 heater on full throttle for 1 hour. A kilo firewood burns in a normal stove in about 1 hour. If the stove has an output of 6 kWh, it needs 1,5 kg per hour. If one wishes to have a fire for 4 hours. 6 kg firewood is needed, plus some kindle for starting the fire. A stove with a heat storage of 100 kg can typically store 4 - 5 kWh. I.e. a good kilo of firewood is needed to load up the heat store. For an evening in front of the fire, a stove with storage, some 7 kg of firewood would be sensible. A piece of well dried beech, 25 cm long, and 7 x 10 cm cross section weights 1 kilo. Red Anvil offers several solutions for trans-porting the firewood from the wood pile and presenting it at the stove, with capacities of 12 - 18 kg. The „Stations“ are robust steel frames intended to present the wood at the stove. With a „WoodPack“ the firewood can easily be fetched and slips into the Station. The „Carrys“, of a light alu-magnesium alloy, are intended for fetch and present. A one-hand Carry leaves the other hand free for the door or handrail. www.red-anvil.net 47 Spruce catches fire very easily and is excellent for kindling. Heat energy per weight unit:: 4,3 kWh/kg Density: 0,44 kg/dm³ Heat energy per volume unit:: 1,9 kWh/dm³ Beech burns for a long time with an attractive fire. Has a lot of heating value. Heat energy per weight unit:: 4,2 kWh/kg Density: 0,74 kg/dm³ Heat energy per volume unit:: 3,1 kWh/dm³ Birch burns pleasantly aromatic. The bark is an excellent starter. Heat energy per weight unit:: 4,2 kWh/kg Density: 0,69 kg/dm³ Heat energy per volume unit:: 2,9 kWh/dm³ Oak has a lot of energy, but burns with an unattractive flame. Burning tannins can have unpleasant odour. Heat energy per weight unit:: 4,2 kWh/kg Density: 0,68 kg/dm³ Heat energy per volume unit:: 2,8 kWh/dm³
2016 11 02 Broschure 52s
To see the actual publication please follow the link above