194. Computational Fluid Dynamics to Characterize Indoor Air Quality Due to Emissions from a Copier in a Ventilated Testing Chamber

Indoor air quality plays a significant role in human health, especially for those who spend the majority of their time indoors, as is the case of workers in the industrial field. The control of contaminants inside the occupational indoor environment becomes critically important for promoting health. In terms of Health Impact Assessment, indoor air quality inside a factory becomes an essential factor of industrial hygiene. Here, computational fluid dynamics-based indoor environmental design was applied to potentially evaluate the environmental quality in a factory and to improve industrial hygiene. In particular, this study proposes an integrated simulation procedure to predict the inhalation exposure concentration of a hazardous chemical compound (here, cyclohexanone) by using a multi-stage, one-way nesting method. This procedure connects a factory building space, a micro-climate around the human body, and a respiratory tract in the human body. This research provides quantitative and qualitative detailed information of contaminant dosing in workers. The exact inhalation dose of contaminants in the human airways can be estimated based on factory-environment conditions through this procedure. Subsequently, the average contaminant concentration in the work place and inside the human body can be calculated.

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Effect of Bench Hood Exhaust Usage on Indoor Air Quality in a Chemical Laboratory

Evolving Trends in Engineering and Technology ◽

10.18052/www.scipress.com/etet.1.14 ◽

2014 ◽

Vol 1 ◽

pp. 14-22

Author(s):

Ayman A. Shaaban ◽

Samy M. Morcos ◽

Essam Eldin Khalil ◽

Mahmoud A. Fouad

Keyword(s):

Fluid Dynamics ◽

Experimental Data ◽

Computational Fluid Dynamics ◽

Air Quality ◽

Indoor Air Quality ◽

Mole Fraction ◽

Indoor Air ◽

Cfd Model ◽

Ansys Fluent ◽

Computational Fluid Dynamics Cfd

Indoor air quality inside chemical laboratories subjected to gaseous contaminants was investigated numerically throughout the current research using Ansys Fluent 13. The lab is 4.8 m (L) * 4.3 m (W) * 2.73 m (H). The model was built and mesh was generated using Gambit 2.2.30 yielding around 1.4 million cells. To ensure the reliability of the Computational Fluid Dynamics (CFD) model validation was done against experimental data of three cases done by Jin et al. [1]. The model could simulate accurately contaminant mole fraction to the order of 10 Indoor air quality inside chemical laboratories subjected to gaseous contaminants was investigated numerically throughout the current research using Ansys Fluent 13. The lab is 4.8 m (L) * 4.3 m (W) * 2.73 m (H). The model was built and mesh was generated using Gambit 2.2.30 yielding around 1.4 million cells. To ensure the reliability of the Computational Fluid Dynamics (CFD) model validation was done against experimental data of three cases done by Jin et al. [1]. The model could simulate accurately contaminant mole fraction to the order of 10.

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Distribution of Indoor Air Quality under Air Conditioning Running

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.945-949.976 ◽

2014 ◽

Vol 945-949 ◽

pp. 976-979

Author(s):

Bao Wei Liu

Keyword(s):

Fluid Dynamics ◽

Numerical Simulation ◽

Air Quality ◽

Theoretical Analysis ◽

Thermal Comfort ◽

Energy Saving ◽

Indoor Air Quality ◽

Indoor Air ◽

Air Conditioning ◽

Dynamics Model

People are constantly committed to seeking new ways that energy saving ventilation can improve indoor air quality. In this paper, methods of theoretical analysis and numerical simulation combining established indoor ventilation jet crash fluid dynamics model to simulate the indoor air, thermal comfort and indoor air quality issues.

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