A test device for flow and heat transfer characteristics of a transverse non-uniform indirect heating rectangular channel

Abstract

The invention relates to a flow and heat exchange characteristic test device of a transverse non-uniform indirect heating rectangular channel. The test device mainly comprises a flow channel body module, a power loading module and a clamping fixed module. The test device can achieve transverse heat flow distribution in different forms according to research requirements by conveniently adjusting the output power of each electric heating element, is convenient for developing a flow heat exchange characteristic test of a rectangular narrow slit flow channel under the transverse non-uniform heat flow working condition, and is used for researching the influence of thermodynamic parameters such as different pressures, temperatures, flow rates, transverse heat load distribution and the like and corresponding geometric parameters on the flow heat exchange characteristic; in addition, the test device is provided with a firm pressure-bearing protection shell and a mounting and fixing support, so that the test device can operate in a wide thermal parameter (pressure, flow and the like) range, and the testing working condition requirements under different engineering practical application backgrounds are met.

Description

technical field [0001] The invention belongs to the technical field of thermal fluid experiment research in the field of energy and power engineering, and in particular relates to a test device for indirectly simulating the influence of non-uniform heat release in the transverse direction (perpendicular to the fluid flow direction) on the flow and heat transfer characteristics in a rectangular channel. Background technique [0002] Narrow channel enhanced heat transfer technology, as a new enhanced heat transfer method, has the advantages of small temperature difference, high heat transfer efficiency, and compact structure. It is a very popular research field in recent years. Many experiments and theoretical studies have found that when the narrow slit width is less than 3 mm, the boiling is in the polymerization bubble region, the heat transfer capacity is significantly enhanced compared with other scale channels, and the heat transfer coefficient further increases with the ...

AI Technical Summary

Problems solved by technology

The test device, equipment and test method disclosed in the invention can simulate the fluid flow and heat transfer behavior in the narrow slit channel, but the heating components described in the device of the invention can only provide constant wall temperature or constant heat flow, and cannot simulate transverse non-linear Flow heat transfer characteristics under uniform heat load environment

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