Experimental device for measuring periodical heat transfer coefficient

Abstract

The invention discloses an experimental device for measuring a periodical heat transfer coefficient, which is used for measuring heat transfer coefficients of different heat transfer periods. The device comprises a steel cylinder rotating system, an air channel, a water channel system, a heating system, a temperature collecting system, nozzles and a regulating system thereof as well as a box body of the experimental device. The experimental device provided by the invention can regulate the revolving speed of a rotating steel cylinder so as to change the moving speed of a cooling surface, so that different heat transfer periods are realized, different nozzles are changed to realize different cooling manners, air pressure and water pressure are regulated, and the cooling intensity is changed; regulating devices of the nozzles can change a spraying angle and a spraying height of each nozzle, and the experimental device also can simulate the periodical cooling radiating process of an inner heat source.

Description

[0001] technical field [0002] The invention relates to the technical field of measuring different periodic heat transfer coefficients, in particular to an experimental device for measuring periodic heat transfer coefficients. Background technique [0003] In the industrial cooling process, the heat transfer coefficient determines the cooling intensity. It is of great significance to determine the relationship between different cooling water volumes, different nozzle spray heights, different spray angles and heat transfer coefficients, which is of great significance for adjusting the cooling intensity. , It plays a decisive role in formulating a reasonable cooling system and improving product quality. [0004] Periodic heat exchange exists in the production process of intermittent cooling in industrial production, that is, let the cooled workpiece pass through the arranged cooling nozzles once, and the workpiece is in a cooled state when it passes through the nozzle. In a ...

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Problems solved by technology

[0008] The technical problem to be solved in the present invention is to overcome the defects of the prior art and provide an experimental device for measuring the periodic heat transfer coefficient. The heat flow and heat transfer coefficient solve the problems of cooling steel plate deformation, boundary heat dissipation, continuous cooling, spray angle adjustment and internal heat source in the cycle heat exchange.

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