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A Method for Predicting the Critical Heat Flux of Parallel Small Channels Under Electric Field Disturbance

A technology of critical heat flux and electric field interference, applied in the direction of thermal development of materials, etc., can solve problems such as critical heat flux of parallel small channel heat exchangers that have not been seen

Active Publication Date: 2021-07-02
NORTHEAST DIANLI UNIVERSITY
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Problems solved by technology

So far, there are no literature reports and practical applications related to a method for predicting the critical heat flux of parallel small channel heat exchangers under electric field interference of the present invention

Method used

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  • A Method for Predicting the Critical Heat Flux of Parallel Small Channels Under Electric Field Disturbance
  • A Method for Predicting the Critical Heat Flux of Parallel Small Channels Under Electric Field Disturbance
  • A Method for Predicting the Critical Heat Flux of Parallel Small Channels Under Electric Field Disturbance

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[0050] Concrete example: the used system diagram of the present invention is as figure 1 As shown, the experimental bench consists of five parts: working fluid circulation system, heating system, cooling system, data acquisition system and regulated DC voltage source. The working medium circulation system includes a liquid storage, a pump, a preheater, and an experimental section. The working fluid circulation process is as follows: the working fluid flows out from the liquid storage bottle, enters the preheater through the flow meter, and enters the experiment to absorb heat after reaching the saturated liquid temperature. filter, the filtered working fluid returns to the storage bottle to complete a complete cycle of working fluid. The schematic diagram of the experiment is as figure 2 As shown, the small channel parallel tube heat dissipation device adopted by the present invention is formed by parallel connection of nine small channels with length L=250mm, width d=2mm, ...

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Abstract

The invention is a method for predicting the critical heat flux density of parallel small channels under electric field interference. By judging that the heat flux density at the corresponding temperature after the appearance of the dry-up point is the critical heat flux density, the collected temperature is calculated and analyzed, and the experimental critical heat flux density is obtained. Applicability and accuracy: The prediction formula of critical heat flux density is proposed to verify that the accuracy of the prediction model is ±15%, which can provide a suitable theoretical prediction model for the prediction of critical heat flux density of parallel small channels under electric field interference. It has the advantages of scientific and reasonable, strong applicability, and can meet the requirements of prediction accuracy.

Description

technical field [0001] The invention relates to the field of electric field prediction, which is a method for predicting the critical heat flux of parallel small channels under electric field interference, and is applied to predict the critical heat flux of heat exchangers in electronic refrigeration equipment or heat exchange equipment under electric field interference. Background technique [0002] The structure of the small channel is compact, and the heat transfer efficiency per unit area is high. It has the advantages of small size, light weight and good sealing. Therefore, more and more technicians in different fields pay attention to the heat transfer characteristics of small channel boiling. It is involved in aerospace, nuclear reactors, fuel cells and other equipment with large heat dissipation. Among them, small channels show great advantages in solving the problem of heat dissipation and cooling of electronic equipment. However, when the critical heat flux is r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N25/20
CPCG01N25/20
Inventor 李洪伟王亚成杨悦孙斌洪文鹏
Owner NORTHEAST DIANLI UNIVERSITY
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