Refractory bricks are referred to as fire bricks. Refractory material fired from refractory clay or other refractory raw materials. Pale yellow or brownish. Mainly used for building smelting furnaces, it can withstand high temperature of 1,580℃-1,770℃. Also called fire bricks. A refractory material of a certain shape and size. According to the preparation method, it can be divided into fired bricks, non-fired bricks, fused bricks (fused cast bricks), refractory and heat-insulating bricks; according to shape and size, it can be divided into standard bricks, ordinary bricks, special bricks, etc. It can be used as high-temperature building materials and structural materials for building kilns and various thermal equipment, and can withstand various physical and chemical changes and mechanical effects at high temperatures. For example, refractory clay bricks, high alumina bricks, silica bricks, magnesia bricks, etc.
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The refractory brick manufacturer said that the refractory brick relies on convection and steady state heat transfer. If there are two refractory bricks in the middle of the high temperature furnace, and there are two different temperatures, there will be a temperature difference. The process by which heat transfer occurs is called heat transfer.
Heat transfer rate: refers to the heat transferred through the heat transfer surface per unit time.
Heat flux: refers to the heat transferred through a unit heat transfer surface per unit time. Heat flux is also called heat density.
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Steady state heat transfer
The heat transfer process in which the temperature of each point in the heat transfer system only changes with position and not with time. The process of stationary heat transfer is characterized by a constant heat transfer rate through the heat transfer surface.
Unsteady heat transfer
In the process of unsteady heat transfer system, the temperature of each point along the way not only changes with the position, but also changes with the time. Typically, the heat transfer process for batch production operations is non-stationary heat transfer.
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