Everything is done quite quickly and simply. A tank with a lid, made of galvanized sheet, is put on the cast-iron stove, only its bottom is made of soft aluminum. The tank is filled with ordinary river sand, which, heating from the furnace, keeps heat for a long time and heats the room. So that heat from the heated bottom of the reservoir penetrates into the sand more quickly, throughout the entire volume of the reservoir every 3-
As a result of good thermal contact of the plates with the bottom, the sand in the storage unit heats up very quickly. The bottom joint with the tank is sealed with asbestos cloth and reinforced with rivets.
The room begins to heat up almost immediately, as the furnace is flooded, and the sand creates a reserve of heat, which gives off both during the furnace and after the cessation of combustion.