An evaluation method for pollutant capture effect of fume hood based on cfd simulation

An evaluation method and technology for pollutants, 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, greenhouse gas emissions, etc., to improve work Environment, reducing occupational health and safety risks, the effect of simple numerical simulation process

Active Publication Date: 2022-07-15
EAST CHINA UNIV OF SCI & TECH
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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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  • An evaluation method for pollutant capture effect of fume hood based on cfd simulation
  • An evaluation method for pollutant capture effect of fume hood based on cfd simulation
  • An evaluation method for pollutant capture effect of fume hood based on cfd simulation

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Embodiment Construction

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

[0040] According to an embodiment of the present invention, a method for evaluating the pollutant capture effect of a fume hood based on CFD simulation is provided. The method is to perform a 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] The method specifically includes the following steps:

[0042] Step 1. CFD 3D Modeling

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

[0044] Determine the simulation scene as a chemical fume hood, and the required inlet air velocity of the fume hood is 0.57m / s;

[0...

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Abstract

The invention provides a method for evaluating the pollutant capture effect of a fume hood based on CFD simulation. The method is to perform 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 the corresponding hazard protection measures according to the analysis results.

Description

technical field [0001] The invention relates to the fields of occupational health and occupational hazard contact control technology and indoor environment science and technology, in particular to a method for controlling the operation noise of a fume hood based on CFD simulation. Background technique [0002] Fume hoods are commonly used equipment for pollutant emission control in laboratories. [0003] At present, most experimental operators evaluate the fume hood's pollutant capture effect only based on the sampling report at the factory, ignoring the evaluation of the fume hood's capture effect in the actual use process. However, the actual operating conditions of the fume hood in the laboratory are relatively complex, generally involving built-in instruments and equipment, heating operation and pollutant discharge, etc. At the same time, many experimental processes require the operator to sit in a sitting position for a long time, thus causing the breathing zone of the ...

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Application Information

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