Enhanced Ventilation and Energy Efficiency of an Optimized Double-Channel Solar Chimney
This study explores the use of solar chimneys to harness solar radiation, generating a chimney effect that promotes natural ventilation in buildings. However, the performance of double-channel solar chimneys is heavily influenced by their installation conditions. We propose an optimized double-chann...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-04-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/15/8/1380 |
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| author | Chenle Ye Yanfei Zhang Qinming Lv Shaoyang Lou Xiaojun Luo Zhonggou Chen Guoyi Zhang |
| author_facet | Chenle Ye Yanfei Zhang Qinming Lv Shaoyang Lou Xiaojun Luo Zhonggou Chen Guoyi Zhang |
| author_sort | Chenle Ye |
| collection | DOAJ |
| description | This study explores the use of solar chimneys to harness solar radiation, generating a chimney effect that promotes natural ventilation in buildings. However, the performance of double-channel solar chimneys is heavily influenced by their installation conditions. We propose an optimized double-channel solar chimney with a deflector placed at the base of the collector. Through numerical simulations, we analyze how different deflector installation conditions affect the ventilation performance of the optimized system. Key parameters for the deflector installation include its angle and length. Our findings reveal that the optimal configuration for the double-channel solar chimney occurs when the deflector has a horizontal angle of γ = 35° and a length-to-diameter ratio (l/D) of 0.3. Under a solar radiation intensity of 800 W/m<sup>2</sup>, the optimized system achieved a ventilation rate of 0.185 kg/s and a thermal efficiency of 41.2%. Compared with conventional double-channel solar chimneys, this configuration enhanced ventilation performance by 8.2% and increased thermal efficiency by 7.4%. In the calculations, the optimized system resulted in a 13.6% reduction in energy consumption, underscoring its potential for sustainable architectural design. |
| format | Article |
| id | doaj-art-97c3c4049e0448bfa23e7251c41b16da |
| institution | OA Journals |
| issn | 2075-5309 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj-art-97c3c4049e0448bfa23e7251c41b16da2025-08-20T02:17:20ZengMDPI AGBuildings2075-53092025-04-01158138010.3390/buildings15081380Enhanced Ventilation and Energy Efficiency of an Optimized Double-Channel Solar ChimneyChenle Ye0Yanfei Zhang1Qinming Lv2Shaoyang Lou3Xiaojun Luo4Zhonggou Chen5Guoyi Zhang6Department of Landscape and Architecture, Zhejiang Agriculture and Forestry University, Hangzhou 311300, ChinaDepartment of Landscape and Architecture, Zhejiang Agriculture and Forestry University, Hangzhou 311300, ChinaBureau of Housing and Urban-Rural Development of Pingyang County, Wenzhou 325400, ChinaDepartment of Landscape and Architecture, Zhejiang Agriculture and Forestry University, Hangzhou 311300, ChinaChina Construction Fifth Engineering Division Co., Ltd., Hangzhou 311300, ChinaDepartment of Landscape and Architecture, Zhejiang Agriculture and Forestry University, Hangzhou 311300, ChinaDepartment of Landscape and Architecture, Zhejiang Agriculture and Forestry University, Hangzhou 311300, ChinaThis study explores the use of solar chimneys to harness solar radiation, generating a chimney effect that promotes natural ventilation in buildings. However, the performance of double-channel solar chimneys is heavily influenced by their installation conditions. We propose an optimized double-channel solar chimney with a deflector placed at the base of the collector. Through numerical simulations, we analyze how different deflector installation conditions affect the ventilation performance of the optimized system. Key parameters for the deflector installation include its angle and length. Our findings reveal that the optimal configuration for the double-channel solar chimney occurs when the deflector has a horizontal angle of γ = 35° and a length-to-diameter ratio (l/D) of 0.3. Under a solar radiation intensity of 800 W/m<sup>2</sup>, the optimized system achieved a ventilation rate of 0.185 kg/s and a thermal efficiency of 41.2%. Compared with conventional double-channel solar chimneys, this configuration enhanced ventilation performance by 8.2% and increased thermal efficiency by 7.4%. In the calculations, the optimized system resulted in a 13.6% reduction in energy consumption, underscoring its potential for sustainable architectural design.https://www.mdpi.com/2075-5309/15/8/1380double-channel solar chimneydeflectorenergy efficiencyventilation ratethermal efficiency |
| spellingShingle | Chenle Ye Yanfei Zhang Qinming Lv Shaoyang Lou Xiaojun Luo Zhonggou Chen Guoyi Zhang Enhanced Ventilation and Energy Efficiency of an Optimized Double-Channel Solar Chimney Buildings double-channel solar chimney deflector energy efficiency ventilation rate thermal efficiency |
| title | Enhanced Ventilation and Energy Efficiency of an Optimized Double-Channel Solar Chimney |
| title_full | Enhanced Ventilation and Energy Efficiency of an Optimized Double-Channel Solar Chimney |
| title_fullStr | Enhanced Ventilation and Energy Efficiency of an Optimized Double-Channel Solar Chimney |
| title_full_unstemmed | Enhanced Ventilation and Energy Efficiency of an Optimized Double-Channel Solar Chimney |
| title_short | Enhanced Ventilation and Energy Efficiency of an Optimized Double-Channel Solar Chimney |
| title_sort | enhanced ventilation and energy efficiency of an optimized double channel solar chimney |
| topic | double-channel solar chimney deflector energy efficiency ventilation rate thermal efficiency |
| url | https://www.mdpi.com/2075-5309/15/8/1380 |
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