Study on Inter-zonal Heat Transfer for Large Space Buildings with Floor-level Side Wall Air-supply System
This study uses experimental and computational fluid dynamics (CFD) methods to investigate convective heat transfer, heat convection caused by airflow, and heat conduction caused by temperature differences in large-space buildings with floor-level side wall air-supply systems. Three thermal environm...
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| Format: | Article |
| Language: | zho |
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Journal of Refrigeration Magazines Agency Co., Ltd.
2022-01-01
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| Series: | Zhileng xuebao |
| Subjects: | |
| Online Access: | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2022.02.089 |
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| _version_ | 1849707652833083392 |
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| author | Wang Haidong Hu Hao Zhu Jieke Yang Xinqi Wang Ruikun |
| author_facet | Wang Haidong Hu Hao Zhu Jieke Yang Xinqi Wang Ruikun |
| author_sort | Wang Haidong |
| collection | DOAJ |
| description | This study uses experimental and computational fluid dynamics (CFD) methods to investigate convective heat transfer, heat convection caused by airflow, and heat conduction caused by temperature differences in large-space buildings with floor-level side wall air-supply systems. Three thermal environment experiments with different roof exhaust ratios were conducted in a reduced-scale laboratory to investigate the indoor thermal environment and load characteristics. The CFD simulation results were verified based on the experimentally obtained vertical temperature distribution of the central line and air-conditioning cooling load. Based on similarity theory, reduced-scale numerical models are extended to full-scale configurations. The results show that the heat conduction due to the temperature difference dominates the inter-zonal heat transfer in the floor-level side wall air-supply system. By dividing the entire indoor space into two zones in the vertical direction, the values of inter-zonal heat transfer coefficient Cb for the prototype building are 7.92, 6.14, and 3.81 W/(m2?°C) at 0, 10%, and 20% roof exhaust air ratios respectively. Cb is mainly influenced by the airflow characteristics, zonal division, and airflow pattern, whereas it is less affected by the roof exhaust method. |
| format | Article |
| id | doaj-art-91a0c7ddcb3c4fc58b0528fa0202b033 |
| institution | DOAJ |
| issn | 0253-4339 |
| language | zho |
| publishDate | 2022-01-01 |
| publisher | Journal of Refrigeration Magazines Agency Co., Ltd. |
| record_format | Article |
| series | Zhileng xuebao |
| spelling | doaj-art-91a0c7ddcb3c4fc58b0528fa0202b0332025-08-20T03:15:51ZzhoJournal of Refrigeration Magazines Agency Co., Ltd.Zhileng xuebao0253-43392022-01-014366503365Study on Inter-zonal Heat Transfer for Large Space Buildings with Floor-level Side Wall Air-supply SystemWang HaidongHu HaoZhu JiekeYang XinqiWang RuikunThis study uses experimental and computational fluid dynamics (CFD) methods to investigate convective heat transfer, heat convection caused by airflow, and heat conduction caused by temperature differences in large-space buildings with floor-level side wall air-supply systems. Three thermal environment experiments with different roof exhaust ratios were conducted in a reduced-scale laboratory to investigate the indoor thermal environment and load characteristics. The CFD simulation results were verified based on the experimentally obtained vertical temperature distribution of the central line and air-conditioning cooling load. Based on similarity theory, reduced-scale numerical models are extended to full-scale configurations. The results show that the heat conduction due to the temperature difference dominates the inter-zonal heat transfer in the floor-level side wall air-supply system. By dividing the entire indoor space into two zones in the vertical direction, the values of inter-zonal heat transfer coefficient Cb for the prototype building are 7.92, 6.14, and 3.81 W/(m2?°C) at 0, 10%, and 20% roof exhaust air ratios respectively. Cb is mainly influenced by the airflow characteristics, zonal division, and airflow pattern, whereas it is less affected by the roof exhaust method.http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2022.02.089large space buildingsstratified air-conditioningfloor-level side wall air-supply systemsimilarity theoryinter-zonal heat transfer coefficient |
| spellingShingle | Wang Haidong Hu Hao Zhu Jieke Yang Xinqi Wang Ruikun Study on Inter-zonal Heat Transfer for Large Space Buildings with Floor-level Side Wall Air-supply System Zhileng xuebao large space buildings stratified air-conditioning floor-level side wall air-supply system similarity theory inter-zonal heat transfer coefficient |
| title | Study on Inter-zonal Heat Transfer for Large Space Buildings with Floor-level Side Wall Air-supply System |
| title_full | Study on Inter-zonal Heat Transfer for Large Space Buildings with Floor-level Side Wall Air-supply System |
| title_fullStr | Study on Inter-zonal Heat Transfer for Large Space Buildings with Floor-level Side Wall Air-supply System |
| title_full_unstemmed | Study on Inter-zonal Heat Transfer for Large Space Buildings with Floor-level Side Wall Air-supply System |
| title_short | Study on Inter-zonal Heat Transfer for Large Space Buildings with Floor-level Side Wall Air-supply System |
| title_sort | study on inter zonal heat transfer for large space buildings with floor level side wall air supply system |
| topic | large space buildings stratified air-conditioning floor-level side wall air-supply system similarity theory inter-zonal heat transfer coefficient |
| url | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2022.02.089 |
| work_keys_str_mv | AT wanghaidong studyoninterzonalheattransferforlargespacebuildingswithfloorlevelsidewallairsupplysystem AT huhao studyoninterzonalheattransferforlargespacebuildingswithfloorlevelsidewallairsupplysystem AT zhujieke studyoninterzonalheattransferforlargespacebuildingswithfloorlevelsidewallairsupplysystem AT yangxinqi studyoninterzonalheattransferforlargespacebuildingswithfloorlevelsidewallairsupplysystem AT wangruikun studyoninterzonalheattransferforlargespacebuildingswithfloorlevelsidewallairsupplysystem |