Actually it's only about physics.
It starts with the energy- and fuel value of dry wood which is stated at 4 kw/h per kg and the energy release process which is better known as the actual heating.
This way about 4 to 10 kg wood (or 16 to 40 kw/h energy) get lightend up. Wood fiber changes into combustion gas and generates heat and warmth.
One part of the heat is produced in the combustion chamber of the tiled stove or the fireplace, and is thus emitted directly from the "epicenter". The heating gases, which emerge in the combustion chamber and have a temperature of approx. 800°C, contain the other great part of the energy.
By using different heat exchanging devices, the temperature is detracted from these energy amounts and can thus be used as heat. The smoke gases are fastly cooled down in the ceramic stove system and are used as hot air for great heat outputs. When the heating gases are passed through a draught-canal of a mass capable of heat storage, this mass is heated up and emits a steady radiant heat for hours. Another possibility is to pass the heat gases through a vessel body which operates like a real heat exchanger in the furnace.
To use the knowledge of creating energy by using wood and combining this with all kinds of different types of systems for all individual needs is our supreme discipline. Only a perfectly aligned wood stove system for a stove or a fireplace can provide the desired well- being.
BRUNNER is known for best products in best quality. All we do is to build the best combustion chambers with specially aligned warmth systems. This is what makes BRUNNER so unique. We call this expertise - you will name it satisfaction.