An evaluation index for the control effect of the local ventilation systems on indoor air quality in industrial buildings

Wang, Yi; Cao, Yingxue; Liu, Bo; Liu, Jiaping; Yang, Yang; Yu, Qun

doi:10.1007/s12273-016-0295-2

Cited by 29 publications

(6 citation statements)

References 18 publications

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“…Since the 1970s, CFD has been widely used to investigate airflow in various types of rooms, facilities, equipment, devices, and environments [4][5][6][7][8][9][10][11][12][13], but it has only been used for a few direct investigations of airflow over and around pieces of industrial machinery. Results from those investigations were very beneficial to our work and some are 2 Mathematical Problems in Engineering mentioned here.…”

Section: Introductionmentioning

confidence: 99%

A Problem of Particulate Contamination in an Automated Assembly Machine Successfully Solved by CFD and Simple Experiments

Thongsri

2017

Mathematical Problems in Engineering

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Assembly of hard disk drives (HDDs) needs to be done in an automated assembly machine (AAM) virtually free of particulate contamination that can cause them to malfunction. Fan filter units (FFUs) are installed above the AAM to reduce the number of suspended particles in the recirculating air flowing over and around them. At one time, several HDDs were found to be defective. To find out the root cause of this problem, computational fluid dynamics (CFD) was used to investigate the airflow over and around the AAM. It was found that the cause of the high particle counts was improper air speed from the FFUs. The optimal FFUs air speed needed to be in the range of 0.35-0.65 m/s in which the airflow would block out nearby airborne particles and purge away particles generated by the AAM effectively which would, in effect, reduce the particle counts down below the threshold level of class 100 clean room. A few available measurement tools at the factory were then used to perform validating measurements against the simulation results, and the validation was positive. This optimal speed range was implemented at the factory after which the level of contamination was reduced to an acceptable level.

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Section: Introductionmentioning

confidence: 99%

A Problem of Particulate Contamination in an Automated Assembly Machine Successfully Solved by CFD and Simple Experiments

Thongsri

2017

Mathematical Problems in Engineering

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“…One practical solution to overcome these challenges would be further cooperation among different stakeholders of IAQ/IEQ domain, to define "general cohesive IAQ guidelines" for different interior spaces, based on (at least) two crucial criteria of: a) type of building use, and b) building geographical and regional specifications. [110]; [111]; [112]; [113]; [114]; [115]; [116]; [117]; [118]; [119]; [120]; [121]; [122]; [123]; [124]; [125]; [126]; [127]; [128]; [129]; [130]; [131]; [132]; [133]; [134]; [135]; [136]; [137]; [138].…”

Section: Iaq Index Time Frames (Time Range)mentioning

confidence: 99%

Scoping review of indoor air quality indexes: Characterization and applications

Pourkiaei

Romain

2023

Journal of Building Engineering

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“…To date, there has been little to no research into the application of emergency ventilation systems assuming accidental leakage of pollutants, while passive/active ventilation systems operating all the time have been widely discussed to reduce longterm health risks in industrial buildings. [33][34][35][36] In other words, this study becomes a highly leading and original research where the application possibility of a hybrid EVS in emergency situation is investigated in detail.…”

Section: Introductionmentioning

confidence: 99%

Hybrid emergency ventilation system for controlling inhaled contaminant dose in the case of chemical leakage

Ichimiya

Murga

Yoo

et al. 2021

Indoor and Built Environment

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In factories where high-risk chemical pollutants are treated, it is essential to anticipate response measures in the event of chemical pollutant leakage to minimize adverse health effects on workers. When high-risk liquid chemical pollutants are assumed to be leaked inside enclosed spaces, it becomes crucial to predict the non-uniform concentration distributions in enclosed spaces and evaluate the health impacts and risks of short-time exposure to prevent large-scale accidents. Therefore, we have developed an emergency ventilation system for controlling the inhaled contaminant dose of factory workers. In this study, assuming a worst-case scenario liquid chemical pollutant leak in an enclosed factory space, the advantages and performance of a hybrid ventilation system that combines displacement and push–pull type ventilation systems were numerically investigated. Installation of wall materials that facilitate photocatalytic oxidation (PCO) reactions for background passive concentration control was also discussed. Based on the demonstrative numerical analyses for a realistic factory space, push–pull type ventilation system was confirmed to effectively suppress chemical pollutant diffusion in enclosed spaces with a low ventilation rate. Wall materials with the PCO mechanism had a certain contribution to the control of peak concentration.

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An evaluation index for the control effect of the local ventilation systems on indoor air quality in industrial buildings

Cited by 29 publications

References 18 publications

A Problem of Particulate Contamination in an Automated Assembly Machine Successfully Solved by CFD and Simple Experiments

A Problem of Particulate Contamination in an Automated Assembly Machine Successfully Solved by CFD and Simple Experiments

Scoping review of indoor air quality indexes: Characterization and applications

Hybrid emergency ventilation system for controlling inhaled contaminant dose in the case of chemical leakage

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