Air quality in an underground garage: computational and experimental investigation of ventilation effectiveness

Papakonstantinou, K.; Chaloulakou, A.; Duci, A.; Vlachakis, N.; Markatos, N.C.

doi:10.1016/s0378-7788(03)00020-3

Cited by 65 publications

(32 citation statements)

References 8 publications

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“…56.000 m 3 , with general dimensions of 120 m in length and 65 m in width. Similar studies can be found in the work of Papakonstantinou et al (2003) although only CO was considered as pollutant and different ventilations designs were not considered.…”

Section: Ventilation Analysismentioning

confidence: 58%

Analysis and optimization of ventilation systems for an underground transport interchange building under regular and emergency scenarios

Domingo¹,

Barbero²,

Iranzo³

et al. 2011

Tunnelling and Underground Space Technology

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Section: Ventilation Analysismentioning

confidence: 58%

Analysis and optimization of ventilation systems for an underground transport interchange building under regular and emergency scenarios

Domingo¹,

Barbero²,

Iranzo³

et al. 2011

Tunnelling and Underground Space Technology

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“…In CFD simulations of ICE exhaust emissions dispersion, CO production is commonly described either as a ''steady state'' [18] or as a ''transient'' (time dependent) CO mass source [27]; the respective values are usually selected utilizing information regarding the operational mode of the ICE engines. The location of the CO mass source is an important simulation parameter, since the emitting vehicles are usually moving inside the simulated physical space.…”

Section: Modelling Of the Co Emission Sourcementioning

confidence: 99%

Experimental and Computational Investigation of CO Production and Dispersion in an Automotive Repair Shop

Asimakopoulou

Kolaitis

Founti

2012

Indoor and Built Environment

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Carbon monoxide (CO), a highly toxic gas, is produced during the incomplete combustion of carbon-based fuels. In indoor environments, high CO concentrations constitute a serious occupational health hazard; this is especially true in the case of automotive repair shop (ARS) employees who are exposed on a daily basis to vehicle exhaust streams. The present study focuses on the experimental investigation and numerical simulation of CO production and dispersion inside an ARS facility. Detailed measurements of CO concentration, vehicle traffic and ventilation system velocities are performed; the obtained data are appropriately formulated to provide quantitative information for modelling purposes. A detailed Computational Fluid Dynamics simulation of the developing transient flow-field is performed. The numerical results are validated using the experimental data; an overall good qualitative and quantitative agreement is achieved. Aiming to improve the energy efficiency of the mechanical ventilation system, three alternative scenarios are investigated; it is shown that the utilization of a dynamic ventilation system may result in significant energy consumption benefits, while, at the same time, CO concentrations remain below the values suggested by current occupational health legislation. The obtained results may be utilized to assist the design of mechanical ventilation systems for ARS facilities.

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“…Lu et al [30] predicted the buoyant flow in a heated room using different turbulence models and compared the airflow pattern and temperature field with the measured data. Papakonstantinou et al [31] investigated the air quality in an underground garage by examining the transient variation of carbon monoxide (CO) level under different ventilation rates. Very recently, by using the HYBRID scheme, Heiselberg et al [32] showed that different initial conditions in the CFD simulations may lead to different solutions, suggesting that caution must be taken when the commonly used 'zero initialization' is performed.…”

Section: Previous Workmentioning

confidence: 99%

Applications of high‐resolution schemes based on normalized variable formulation for 3D indoor airflow simulations

Ng¹,

Yusoff

et al. 2007

Numerical Meth Engineering

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SUMMARYComputational fluid dynamics (CFD) has been used in a routine manner for the design of indoor environments. The quality of these CFD studies varies from poor to excellent, and only in year 2003 Sørensen and Nielsen recommend a detailed guideline on imposing quality control in the CFD-related works for indoor airflow simulations. One of these recommendations is to use monotone high-resolution (HR) schemes that apply flux limiters to ensure solution boundedness while preserving the high-order accuracy of the differencing schemes. In this paper, based on the -formulations derived from the normalized variable formulation, four recently developed HR schemes, GAMMA, CUBISTA, AVLSMART and HOAB, are applied to several indoor airflow problems such as (1) Smith-Hutton problem (dead-end channel); (2) forced convection problem (horizontal/oblique inflow) in a parallelepiped room; (3) mixing ventilation problem focusing on the prediction of local mean age of air; (4) flow in a two-room chamber with internal partition and (5) displacement ventilation in a mockup office. Based on the flow results, the aspects of accuracy and robustness of these HR schemes are addressed for appropriate selection of an 'ideal' differencing scheme to improve the quality of 3D indoor CFD calculations.

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Air quality in an underground garage: computational and experimental investigation of ventilation effectiveness

Cited by 65 publications

References 8 publications

Analysis and optimization of ventilation systems for an underground transport interchange building under regular and emergency scenarios

Analysis and optimization of ventilation systems for an underground transport interchange building under regular and emergency scenarios

Experimental and Computational Investigation of CO Production and Dispersion in an Automotive Repair Shop

Applications of high‐resolution schemes based on normalized variable formulation for 3D indoor airflow simulations

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