The open fireplace is the most natural hearth. Basically, it's a fire-resistant primer, on which wood is laid and burned. Above it is placed the exhaust gas manifold, which directs them to the chimney, and this, in turn, drains outside.
An open fireplace can be optically shaped in the same way, like any other tiled stove. Open fire, facing the interior of the room, gives a calming, homely atmosphere. The smell of burnt wood is more intensely felt. However, the pleasant sounds of burning pikes carry a certain danger. These are small explosions in wood., which can cause burning debris to be thrown into the room. So you should never leave the fire on the fireplace unattended. In terms of thermal technology, an open fireplace is unlikely to have any meaning. Its efficiency coefficient is approx. 10 percentage. For an open fireplace, a chimney with very good draught is required, with a diameter of at least 25 Cm. For this, an exhaust gas flap is necessary.