SCHOTT ROBAX® efficient heating
SCHOTT ROBAX® fireplace
Environmentally Friendly Energy

When using a fireplace or stove your burning more efficiently with SCHOTT ROBAX® glass-ceramic when compared to an open fireplace system. With that said we want you to burn more efficiently as well. Whether you choose logs, pellets or briquettes, it is useful to know a little about the various types of fuels in order to be able to burn them resourcefully and cleanly.

In general, any untreated wood can be used as firewood. However, there are differences in the energy content of different types of wood and in the way in which they burn. Softwoods and hardwoods have a very similar heating value, but their energy density or, in other words, their heating value per unit volume, is very different. Hardwoods have a much higher energy density than softwoods. This means that less space is needed to store hardwoods than softwoods with the same heating value. This difference is demonstrated even more clearly in the case of wood or lignite briquettes which are highly efficient energy sources. Softwoods, however, such as spruce and pine burn much faster and are therefore ideal for use as kindling. For a long-burning fire, beech or oak are the best choices. Ash produces the most attractive flames, while a birch fire has a pleasant scent. Poplar and willow are not particularly suitable for burning.
SCHOTT ROBAX® storing firewood
Storing Firewood Correctly

Moisture in the wood has a significant influence on its heating value. Firewood should therefore be properly dried in order to be energy-efficient. Firewood must be split and stored for at least two years in a sheltered, well ventilated area to allow it to season, until the residual moisture content is less than 20 percent. Freshly cut wood can therefore usually be bought more cheaply. Damp wood burns inefficiently and produces a lot of smoke. It can cause soot and tar to form in the chimney which can result in chimney fires. Pellets have a moisture content of less than 10 per cent, and this level of moisture must not be exceeded. As a result, their heating value is around 11 kilowatts per pound   kilo, which is equivalent to about half a quart of heating oil. Lignite briquettes have a heating value of around 12 kilowatts per pound kilo. They have a consistently high quality and, unlike logs, do not need to be split or seasoned. They need a lot of initial heat to ignite them and then provide steady, long-lasting warmth.
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