Heat exchange surface coating heat transfer performance testing system

Abstract

The invention discloses a heat exchange surface coating heat transfer performance testing system which comprises a boiling pool. The boiling pool is connected with a condenser. The boiling pool comprises a shell. The upper end of the shell is connected with an upper cover plate. The lower end of the shell is connected with a lower cover plate. A hole is formed in the lower cover plate. The hole is used for containing a testing workpiece. A bottom pressing plate is arranged below the lower cover plate. A heat insulation silica gel pad and a heat conduction paster are arranged between the lower cover plate and the bottom pressing plate. The testing system further comprises a heater. The heater comprises a direct-current voltage stabilizing power source and a ceramic heating piece. The testing system further comprises a data collection system. The data collecting system comprises a plurality of thermocouples, a temperature patrol instrument and an upper computer. The testing system has the advantages that the application range is wide, the cost performance is high, operation is easy, replacement is easy and convenient, the requirement for machining test workpieces is simple, and the testing accuracy and stability are good.

Description

technical field [0001] The patent of the present invention relates to a heat transfer performance test system of a heat exchange surface coating, which belongs to the field of heat transfer performance test of industrial products. Background technique [0002] Heat exchangers are one of the necessary large-scale industrial equipment in industrial production, and the selection of materials for heat exchangers is based on relevant national and industry standards. With the continuous development and innovation of surface modification technology, researchers have achieved enhanced heat transfer by preparing different types of coatings on the heat exchange surface, which has been applied in industry. For heat exchanger designers, new heat transfer-enhancing coatings and structures will improve the heat transfer coefficient of heat exchangers and enhance heat transfer. However, the existing design standards do not clearly define the influence of the enhanced heat transfer coating...

AI Technical Summary

Problems solved by technology

However, the existing design standards do not clearly define the influence of the enhanced heat transfer coating on the heat transfer coefficient of the heat exchanger. Most of them are provided as reference for designers in the form of empirical parameters, or heat transfer performance tests are required to obtain relevant data. Can be checked, resulting in a certain deviation between the design value and the actual value of the heat transfer efficiency of the heat exchanger

[0003] In addition, due to the many and complex structures of the heat exchanger, although the heat transfer performance test can be carried out through a small heat exchange device to obtain the heat transfer coefficient and heat transfer performance of the new enhanced heat transfer coating, the experimental conditions are limited by other factors and impact, and the desired results cannot be fully obtained or performance tests can be performed normally

For example, the enhanced heat transfer coating prepared by magnetron sputtering technology and ion implantation technology, due to the limitation of the coating preparation process, the preparation of large-scale coatings will increase the cost of heat transfer performance testing, and the non-flat heat transfer surface is also limited. The heat transfer performance of these coatings was tested

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