Heat transfer pipe

Abstract

The invention discloses a heat transfer pipe. A twisted piece (2) is arranged in the heat transfer pipe (1). The heat transfer pipe is characterized in that the twisted piece (2) comprises a horizontal hole (3) which is formed by penetrating the surface of the twisted piece (2) and the edge of the horizontal hole (3) is closed. According to the heat transfer pipe, the resistance of the fluid flow can be reduced and accordingly the pressure drop of the fluid which passes through is reduced and meanwhile the heat transfer efficiency of the heat transfer pipe is improved.

Description

technical field [0001] The invention relates to a heat transfer tube, which is especially suitable for heating furnaces, especially cracking furnaces for producing ethylene. Background technique [0002] The Fourier theorem of the heat transfer process is shown in the following formula (1), where q is the heat transfer amount, A is the heat transfer area, k is the heat transfer coefficient, and t / y is the temperature gradient. [0003] q A = - k dt dy - - - ( 1 ) [0004] Taking the heating furnace in the petrochemical industry as an example, when the heat transfer area (determined by the capacity of the heating furnace) and the temperature gradient (determined by the material of the furnace tube and the capacity of the burner) are determined, the only one that can increase the heat transfer...

AI Technical Summary

Problems solved by technology

The furnace tube with this structure can suppress the pressure loss of the furnace tube, but the effect of the heat transfer process is also lost

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