Solar Chimneys for Natural Ventilation of Buildings: Induced Air Flow Rate Per Chimney Volume
"Ventilation of buildings can be based on mechanical systems, such as fans, or natural driving forces, such as wind or heat. Of common natural ventilation methods, solar chimneys convert solar heat gained on the envelope of buildings into flow energy to ventilate or to cool the buildings. As so...
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2022
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oai:http:--repository.vlu.edu.vn-:123456789-11132022-11-09T16:51:11Z Solar Chimneys for Natural Ventilation of Buildings: Induced Air Flow Rate Per Chimney Volume Nguyễn Quốc Ý Natural ventilation Solar chimney Thermal effect CFD Flow rate per volume "Ventilation of buildings can be based on mechanical systems, such as fans, or natural driving forces, such as wind or heat. Of common natural ventilation methods, solar chimneys convert solar heat gained on the envelope of buildings into flow energy to ventilate or to cool the buildings. As solar chimneys are typically integrated into the building envelope, i.e. walls or roofs, architects determine shapes and sizes of a chimney mainly based on available space on the envelope. This raises a need for maximizing the ventilation performance of a solar chimney for a given space on a building envelope. In this study, ventilation performance of a typical vertical solar chimney was assessed in term of the induced flow rate that it can provide per volume. A three-dimensional numerical model based on the Computational Fluid Dynamics method was built to predict the induced air flow rate through the chimney as its dimensions changed. The tested dimensions included the height, the width, and the gap of the chimney. The induced air flow rate was obtained with different volumes of the chimney. The results show that the induced air flow rate nominated by the chimney volume changed with all three dimensions. Higher flow rate per volume was achieved with the chimneys with shorter heights and lower gap – to – height ratios. Therefore, it is suggested that to maximize the air flow rate per chimney volume, smaller chimneys are preferred. These findings agree with the results in the literature." 2022-11-09T09:51:11Z 2022-11-09T09:51:11Z 2021 Resource Types::text::journal::journal article 9789811632389 9789811632396 http://repository.vlu.edu.vn:443/handle/123456789/1113 10.1007/978-981-16-3239-6_48 en_US Lecture Notes in Mechanical Engineering Modern Mechanics and Applications 2195-4356 2195-4364 text/plain |
| institution |
Trường Đại học Văn Lang |
| collection |
DSpaceVLU |
| language |
en_US |
| topic |
Natural ventilation Solar chimney Thermal effect CFD Flow rate per volume |
| spellingShingle |
Natural ventilation Solar chimney Thermal effect CFD Flow rate per volume Nguyễn Quốc Ý Solar Chimneys for Natural Ventilation of Buildings: Induced Air Flow Rate Per Chimney Volume |
| description |
"Ventilation of buildings can be based on mechanical systems, such as fans, or natural driving forces, such as wind or heat. Of common natural ventilation methods, solar chimneys convert solar heat gained on the envelope of buildings into flow energy to ventilate or to cool the buildings. As solar chimneys are typically integrated into the building envelope, i.e. walls or roofs, architects determine shapes and sizes of a chimney mainly based on available space on the envelope. This raises a need for maximizing the ventilation performance of a solar chimney for a given space on a building envelope.
In this study, ventilation performance of a typical vertical solar chimney was assessed in term of the induced flow rate that it can provide per volume. A three-dimensional numerical model based on the Computational Fluid Dynamics method was built to predict the induced air flow rate through the chimney as its dimensions changed. The tested dimensions included the height, the width, and the gap of the chimney. The induced air flow rate was obtained with different volumes of the chimney.
The results show that the induced air flow rate nominated by the chimney volume changed with all three dimensions. Higher flow rate per volume was achieved with the chimneys with shorter heights and lower gap – to – height ratios. Therefore, it is suggested that to maximize the air flow rate per chimney volume, smaller chimneys are preferred. These findings agree with the results in the literature." |
| format |
Resource Types::text::journal::journal article |
| author |
Nguyễn Quốc Ý |
| author_facet |
Nguyễn Quốc Ý |
| author_sort |
Nguyễn Quốc Ý |
| title |
Solar Chimneys for Natural Ventilation of Buildings: Induced Air Flow Rate Per Chimney Volume |
| title_short |
Solar Chimneys for Natural Ventilation of Buildings: Induced Air Flow Rate Per Chimney Volume |
| title_full |
Solar Chimneys for Natural Ventilation of Buildings: Induced Air Flow Rate Per Chimney Volume |
| title_fullStr |
Solar Chimneys for Natural Ventilation of Buildings: Induced Air Flow Rate Per Chimney Volume |
| title_full_unstemmed |
Solar Chimneys for Natural Ventilation of Buildings: Induced Air Flow Rate Per Chimney Volume |
| title_sort |
solar chimneys for natural ventilation of buildings: induced air flow rate per chimney volume |
| publishDate |
2022 |
| url |
http://repository.vlu.edu.vn:443/handle/123456789/1113 |
| work_keys_str_mv |
AT nguyenquocy solarchimneysfornaturalventilationofbuildingsinducedairflowrateperchimneyvolume |
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