Analysis of Ventilation Efficiency and Effective Ventilation Flow Rate for Wind-driven Single-sided Ventilation Buildings
Abstract Natural ventilation can be categorized into single-sided ventilation and cross-ventilation. Based on the air flow mechanism of a single-sided wind-driven natural ventilation, the effective ventilation flow rates in buildings are different from the air flow rates through openings. The mixing...
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| Format: | Article |
| Language: | English |
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Springer
2020-12-01
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| Series: | Aerosol and Air Quality Research |
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| Online Access: | https://doi.org/10.4209/aaqr.200383 |
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| author | Junli Zhou Yong Hua Yuan Xiao Cheng Ye Wei Yang |
| author_facet | Junli Zhou Yong Hua Yuan Xiao Cheng Ye Wei Yang |
| author_sort | Junli Zhou |
| collection | DOAJ |
| description | Abstract Natural ventilation can be categorized into single-sided ventilation and cross-ventilation. Based on the air flow mechanism of a single-sided wind-driven natural ventilation, the effective ventilation flow rates in buildings are different from the air flow rates through openings. The mixing coefficient or ventilation efficiency is defined by the ratio of these flow rates, indicating the effective ventilating ability of a single-sided ventilation, similar to the effect of penetration depth of fresh air. This paper provides a detailed analysis of ventilation effectiveness in a building with a single opening based on numerical simulations. The simulation was validated by a study of an existing case. By numerical calculation, the air flow rates through openings and the effective ventilation flow rates in buildings were compared. Effects of various influencing parameters, such as wind speed, opening location, opening area and aspect ratio of windward wall on ventilation efficiency were evaluated. An estimated mixing coefficient has been established by the modelling, which would be beneficial for the predication of the short-circuit ratio of ventilation rate through openings. |
| format | Article |
| id | doaj-art-33fdfa68d9d441a6a7fb9c012d91a1e3 |
| institution | Kabale University |
| issn | 1680-8584 2071-1409 |
| language | English |
| publishDate | 2020-12-01 |
| publisher | Springer |
| record_format | Article |
| series | Aerosol and Air Quality Research |
| spelling | doaj-art-33fdfa68d9d441a6a7fb9c012d91a1e32025-02-09T12:20:54ZengSpringerAerosol and Air Quality Research1680-85842071-14092020-12-0121512110.4209/aaqr.200383Analysis of Ventilation Efficiency and Effective Ventilation Flow Rate for Wind-driven Single-sided Ventilation BuildingsJunli Zhou0Yong Hua1Yuan Xiao2Cheng Ye3Wei Yang4School of Civil Engineering and Architecture, Wuhan University of TechnologySchool of Civil Engineering and Architecture, Wuhan University of TechnologySchool of Civil Engineering and Architecture, Wuhan University of TechnologySchool of Civil Engineering and Architecture, Wuhan University of TechnologyFaculty of Architecture, Building and Planning, The University of MelbourneAbstract Natural ventilation can be categorized into single-sided ventilation and cross-ventilation. Based on the air flow mechanism of a single-sided wind-driven natural ventilation, the effective ventilation flow rates in buildings are different from the air flow rates through openings. The mixing coefficient or ventilation efficiency is defined by the ratio of these flow rates, indicating the effective ventilating ability of a single-sided ventilation, similar to the effect of penetration depth of fresh air. This paper provides a detailed analysis of ventilation effectiveness in a building with a single opening based on numerical simulations. The simulation was validated by a study of an existing case. By numerical calculation, the air flow rates through openings and the effective ventilation flow rates in buildings were compared. Effects of various influencing parameters, such as wind speed, opening location, opening area and aspect ratio of windward wall on ventilation efficiency were evaluated. An estimated mixing coefficient has been established by the modelling, which would be beneficial for the predication of the short-circuit ratio of ventilation rate through openings.https://doi.org/10.4209/aaqr.200383Single-sided ventilationVentilation efficiencyEffective ventilation rateNumerical simulation |
| spellingShingle | Junli Zhou Yong Hua Yuan Xiao Cheng Ye Wei Yang Analysis of Ventilation Efficiency and Effective Ventilation Flow Rate for Wind-driven Single-sided Ventilation Buildings Aerosol and Air Quality Research Single-sided ventilation Ventilation efficiency Effective ventilation rate Numerical simulation |
| title | Analysis of Ventilation Efficiency and Effective Ventilation Flow Rate for Wind-driven Single-sided Ventilation Buildings |
| title_full | Analysis of Ventilation Efficiency and Effective Ventilation Flow Rate for Wind-driven Single-sided Ventilation Buildings |
| title_fullStr | Analysis of Ventilation Efficiency and Effective Ventilation Flow Rate for Wind-driven Single-sided Ventilation Buildings |
| title_full_unstemmed | Analysis of Ventilation Efficiency and Effective Ventilation Flow Rate for Wind-driven Single-sided Ventilation Buildings |
| title_short | Analysis of Ventilation Efficiency and Effective Ventilation Flow Rate for Wind-driven Single-sided Ventilation Buildings |
| title_sort | analysis of ventilation efficiency and effective ventilation flow rate for wind driven single sided ventilation buildings |
| topic | Single-sided ventilation Ventilation efficiency Effective ventilation rate Numerical simulation |
| url | https://doi.org/10.4209/aaqr.200383 |
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