Retrofit the stove with stones

Character stoves have been enjoying great popularity for some time. Finally, the pretty, cast-iron comrades with flame windows also offer a comfortable and at the same time elegant ambience. Who wants to heat significantly with the oven, should retrofit him with stones.

What causes storage stones in the stove?

Stoves are characterized by the fact that they are constructed in freestanding and connected to the chimney via a visible stove pipe. Because of their origin they are also called Swedish stoves.

Compared to often very powerful open fireplaces they work with their narrow, cast-iron or sheet steel construction on small feet petite and decorative. They generate heat in a combustion chamber that is fed with logs, pellets or coal. The heat is usually released into the room by convection, i.e. directly via the air as a flowing medium. This form of heat emission is called convection heat.

One could say that the convection heat given off by stoves without a storage medium is not particularly solid. This means that it evaporates quickly, not only because it is passé pretty quickly after it burns down, but also because it spreads nervously in the room, so there tends to be greater cold-heat gradients in the air layers and the heat escapes through open doors and Window all too light.

More even, more permanent heat through storage stones

If the stove is equipped with storage stones, it can also become a powerful addition to the home heating system. For the following reasons:

  • it can store heat and also release it overnight
  • the heat given off is more even
  • Air stays dust-free and does not get so dry

Storage stones can usually be retrofitted in wood-burning stoves. The storage stones, mostly made of soapstone, granite, ceramic or fireclay, sit above the combustion chamber and absorb the heat rising from there. By storing them and slowly releasing them due to their low thermal conductivity, the stove no longer only works according to the convection principle, but largely according to the radiation principle.

Radiant heat has the advantage that it is gradually released over a longer period of time and, above all, continues to work after the fire has long burned down. Overall, the result is a more even, less dry heat.

A heat accumulator only extends and "smooths" the heat output, it does not increase the heating output. This is still only determined by the amount of fuel used, but it does not have to be refilled as often. Another small disadvantage: it takes a little longer to heat up from a cold state.