CFD (Computational Fluid Dynamics) simulation-based method for evaluating collection effect of pollutants in fume hoods

An evaluation method and fume hood technology, which are applied in the fields of occupational health and occupational hazard exposure control technology and indoor environmental science, can solve problems such as large workload and capital investment, reduced filtration efficiency of fume hoods, and greenhouse gas emissions, and achieve numerical simulation. Simple process, reduced occupational health and safety risks, improved work environment effectiveness

Active Publication Date: 2018-11-13
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Although the above methods are relatively mature, they all have obvious defects, that is, they can only be assessed indirectly and qualitatively; even if the quantitative assessment of tracer gases is carried out, it will produce a large amount of greenhouse gas emissions, reduce the filtration efficiency of fume hoods, and detect equipment. Insufficient sensitivity and other issues, and the workload and capital investment are very large

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  • CFD (Computational Fluid Dynamics) simulation-based method for evaluating collection effect of pollutants in fume hoods
  • CFD (Computational Fluid Dynamics) simulation-based method for evaluating collection effect of pollutants in fume hoods
  • CFD (Computational Fluid Dynamics) simulation-based method for evaluating collection effect of pollutants in fume hoods

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Embodiment Construction

[0039] The present invention will be described in detail below in conjunction with the examples, and the examples are intended to explain rather than limit the technical solution of the present invention.

[0040] According to an embodiment of the present invention, a method for evaluating the pollutant trapping effect of a fume hood based on CFD simulation is provided. The method is to carry out three-dimensional simulation of the pollutant concentration field in the fume hood through CFD simulation, analyze the distribution trend and concentration of the pollutant concentration field in the fume hood, and determine corresponding hazard protection measures according to the analysis results.

[0041] Described method specifically comprises the following steps:

[0042] Step 1. CFD 3D modeling

[0043] (1) Determine the simulation scene and initial parameters

[0044] It is determined that the simulated scene is a chemical fume hood, and the required value of the inlet wind s...

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Abstract

The invention provides a CFD (Computational Fluid Dynamics) simulation-based method for evaluating collection effect of pollutants in fume hoods. The method comprises the steps of carrying out three-dimensional simulation on a pollutant concentration field in a fume hood through CFD simulation; analyzing the distribution trend and the concentration of the pollutant concentration field in the fumehood; and determining corresponding hazard preventing measures according to the analysis result.

Description

technical field [0001] The invention relates to the fields of occupational health and occupational hazard exposure control technology and indoor environment science and technology, in particular to a method for controlling operating noise of a fume hood based on CFD simulation. Background technique [0002] Fume hoods are common equipment for pollutant emission control in laboratories. [0003] At present, most experimental operators only evaluate the pollutant capture effect of fume hoods based on the sampling report when they leave the factory, while ignoring the evaluation of the capture effect of fume hoods in the actual use process. However, the actual operating conditions of the fume hood in the laboratory are relatively complicated, generally involving built-in instruments and equipment, heating operations, and pollutant discharge; at the same time, many experimental processes require the operator to sit for a long time to complete, resulting in breathing problems for...

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G06F17/50G06T17/00
CPCG06T17/00G06F30/17G06F30/20
Inventor陈康张洪波章文俊
OwnerEAST CHINA UNIV OF SCI & TECH