Keywords: industrial furnace, although furnace, heat transfer, following part, electric heating, heating, furnace cylinder, trolley, Smoke exhaust, furnace door,

　　What are the commonalities of industrial furnaces

　　although furnaces are widely used in various industries, they have many similarities:

　　1) the basic theories of thermal engineering are the same, all of which are based on several laws of thermodynamics. The processes of fuel combustion, gas flow and heat transfer in the furnace are basically the same.

　　2) The basic components are the same. No matter what kind of furnace, it is generally composed of the following parts:

　　① The part of the heat generating device (such as combustion chamber, burner, electric heating element, etc.).

　　 ② Place the material part (such as furnace, furnace cylinder, trolley, etc.).

　　③ Smoke exhaust system (flue, chimney, etc. for fuel stoves).

　　 ④ Auxiliary devices (such as furnace door, preheater, conveyor chain, etc.).

　　 3) Low thermal efficiency and high energy consumption. Industrial furnaces are the main energy-using equipment in industrial production, and their annual primary energy consumption accounts for about 1/4 of the country is total energy consumption. Especially in the hot processing production of metallurgical, electromechanical and other enterprises, the energy consumption of the furnace accounts for more than 70% of the energy consumption of the process, which is the largest energy user in the production.

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