Heat accumulating fireplaces

Heat accumulating fireplaces are the most energy efficient type of fireplaces. Just a small amount of fuel is enough to make the fireplace remain warm even up to a dozen hours. The outer coating is usually made of tiles or chamotte plates, which can be finished as one wishes. The simplest model of a heat accumulating fireplace involves the use of a standard fireplace insert and a surround made of chamotte plates. The plates accumulate heat from convection air and the whole fireplace releases the pleasant warmth for a long time (Group 1). The fireplace has better heat accumulation qualities, if besides chamotte plates one also uses chamotte disks, which recoup energy from the smoke before it falls into the chimney. Then, one can use a standard fireplace insert, but the convection grids will be necessary, as in the first case. In order not to lose the energy already accumulated in the rings, one should use the combustion process controller with an electronically controlled air intake throttle valve. Once wood is burnt, the controller closes the throttle valve and shuts off the cold air from the outside (Group 2). Instead of the fireplace insert, one may use the stove insert, which enables achievement of a much higher temperature, and thus accumulation of more energy. In case of the stove insert, one can opt out of convection grids, and thus create a hypocaust (Group 3). Instead of discs on the fireplace insert (the stove insert) one can use the chamotte channels, through which hot smoke will pass before it falls into the chimney. The chamotte channels accumulate heat most effectively, because they have the greatest mass and when mounted with chamotte plates, they form a wall which remains warm very long after the fire goes out in the hearth. In case of the fireplace insert, convection grids are generally required. It is also important to use the combustion process controller with an electronically controlled air intake throttle valve (Group 4). However, replacing the fireplace insert with the stove insert is more efficient, because the convection grids are not used then (hypocaust). Additionally, the chamotte channels can be very long, which enables the creation design of seatings. In this option, the whole heat accumulation fireplace has a large accumulation mass and gives great heating opportunities. Obviously the controller is necessary in order not to lose the accumulated energy (Group 5). Yet another but similar to Group 5. type of heat accumulating fireplace is a stove hearth with separately embedded doors and chamotte channels which has even bigger accumulation potential (Group 6).
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