The article is devoted to the heat exchanger block for regenerative burners. In this paper, we calculate the mass of the fusible core, the dimensions of the section, and the time for the transfer of the regenerative block consisting of ten sections with a fusible core whose melting point in the neighboring sections differs by approximately 100 °C. This makes it possible to maintain the constant temperature of the section, keeping this temperature equal to the melting point of the metal in this section, removing heat from its surface by heating the air, or giving away the surfaces, the heat of the combustion products released during crystallization or absorbed during melting of the metal core. The calculation justifies the possibility of reducing the dimensions of the regenerative nozzle for a 200 kW burner, and increasing the time for the overturn, while the air heating temperature remains constant.
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