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Improving night ventilation into low-rise buildings in hot-arid climates exploring a combined wall–roof solar chimney

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  • AboulNaga, M.M
  • Abdrabboh, S.N

Abstract

A theoretical investigation of a combined wall–roof solar chimney to improve night time ventilation in buildings is presented. A spreadsheet computer program is used for the parametric study to find out the optimum configuration of the wall–roof chimney. It has been reported that a roof solar chimney alone can induce an air flow rate of 0.81 m3/s when the average incident solar radiation is 850 W/m2. The maximum air velocity induced is 1.1 m/s when the 25° inclined chimney plates are 0.25 m apart. The aim of the paper is to predict the induced air flow rate as a result of the combined effect and to find the best height. The wall chimney height is varied from 1.95 to 3.45 m to determine the optimum length in relation to the chimney inlet. The results show that the air flow rate is three times more than that of the roof solar chimney alone (0.81 to 2.3 m3/s). The maximum air flow rate of 2.3 m3/s occurs at 3.45 m wall height. ACTION Psychrometrics Software (Sunshine Technology, USA, 1995) is used to predict the mean cooling load corresponding to the induced ACH. An air change per hour up to 26 could be achieved for a flat volume (321 m3). Such ACH could be utilized to improve night ventilation to reduce indoor air temperature and cool low-rise heavy buildings with large diurnal outdoor temperature variations.

Suggested Citation

  • AboulNaga, M.M & Abdrabboh, S.N, 2000. "Improving night ventilation into low-rise buildings in hot-arid climates exploring a combined wall–roof solar chimney," Renewable Energy, Elsevier, vol. 19(1), pages 47-54.
    • Handle: RePEc:eee:renene:v:19:y:2000:i:1:p:47-54
    DOI: 10.1016/S0960-1481(99)00014-2
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    1. Aboulnaga, Mohsen M., 1998. "A roof solar chimney assisted by cooling cavity for natural ventilation in buildings in hot arid climates: An energy conservation approach in Al-Ain city," Renewable Energy, Elsevier, vol. 14(1), pages 357-363.
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    Cited by:

    1. Zhou, Guobing & Yang, Yongping & Wang, Xin & Zhou, Shaoxiang, 2009. "Numerical analysis of effect of shape-stabilized phase change material plates in a building combined with night ventilation," Applied Energy, Elsevier, vol. 86(1), pages 52-59, January.
    2. Friess, Wilhelm A. & Rakhshan, Kambiz, 2017. "A review of passive envelope measures for improved building energy efficiency in the UAE," Renewable and Sustainable Energy Reviews, Elsevier, vol. 72(C), pages 485-496.
    3. Al-Alili, A. & Islam, M.D. & Kubo, I. & Hwang, Y. & Radermacher, R., 2012. "Modeling of a solar powered absorption cycle for Abu Dhabi," Applied Energy, Elsevier, vol. 93(C), pages 160-167.
    4. Hiba Najini & Mutasim Nour & Sulaiman Al-Zuhair & Fadi Ghaith, 2020. "Techno-Economic Analysis of Green Building Codes in United Arab Emirates Based on a Case Study Office Building," Sustainability, MDPI, vol. 12(21), pages 1-22, October.
    5. Monghasemi, Nima & Vadiee, Amir, 2018. "A review of solar chimney integrated systems for space heating and cooling application," Renewable and Sustainable Energy Reviews, Elsevier, vol. 81(P2), pages 2714-2730.
    6. Shi, Long & Zhang, Guomin & Yang, Wei & Huang, Dongmei & Cheng, Xudong & Setunge, Sujeeva, 2018. "Determining the influencing factors on the performance of solar chimney in buildings," Renewable and Sustainable Energy Reviews, Elsevier, vol. 88(C), pages 223-238.
    7. Guo, Rui & Gao, Yafeng & Zhuang, Chaoqun & Heiselberg, Per & Levinson, Ronnen & Zhao, Xia & Shi, Dachuan, 2020. "Optimization of cool roof and night ventilation in office buildings: A case study in Xiamen, China," Renewable Energy, Elsevier, vol. 147(P1), pages 2279-2294.
    8. Zhang, Haihua & Yang, Dong & Tam, Vivian W.Y. & Tao, Yao & Zhang, Guomin & Setunge, Sujeeva & Shi, Long, 2021. "A critical review of combined natural ventilation techniques in sustainable buildings," Renewable and Sustainable Energy Reviews, Elsevier, vol. 141(C).
    9. Ong, K.S., 2003. "A mathematical model of a solar chimney," Renewable Energy, Elsevier, vol. 28(7), pages 1047-1060.
    10. Zhai, X.Q. & Song, Z.P. & Wang, R.Z., 2011. "A review for the applications of solar chimneys in buildings," Renewable and Sustainable Energy Reviews, Elsevier, vol. 15(8), pages 3757-3767.
    11. Gao, Jiajia & Li, Anbang & Xu, Xinhua & Gang, Wenjie & Yan, Tian, 2018. "Ground heat exchangers: Applications, technology integration and potentials for zero energy buildings," Renewable Energy, Elsevier, vol. 128(PA), pages 337-349.
    12. Kasayapanand, Nat, 2008. "Enhanced heat transfer in inclined solar chimneys by electrohydrodynamic technique," Renewable Energy, Elsevier, vol. 33(3), pages 444-453.
    13. Miyazaki, T. & Akisawa, A. & Kashiwagi, T., 2006. "The effects of solar chimneys on thermal load mitigation of office buildings under the Japanese climate," Renewable Energy, Elsevier, vol. 31(7), pages 987-1010.
    14. Sengupta, Ayan & Mishra, Dipti Prasad & Sarangi, Shailesh Kumar, 2022. "Computational performance analysis of a solar chimney using surface modifications of the absorber plate," Renewable Energy, Elsevier, vol. 185(C), pages 1095-1109.
    15. Ahmad Taghdisi & Yousof Ghanbari & Mohammad Eskandari, 2020. "Energy-Conservation Considerations Through a Novel Integration of Sunspace and Solar Chimney in The Terraced Rural Dwellings," International Journal of Energy Economics and Policy, Econjournals, vol. 10(3), pages 1-13.
    16. Li, Yongcai & Long, Tianhe & Bai, Xi & Wang, Linfeng & Li, Wuyan & Liu, Shuli & Lu, Jun & Cheng, Yong & Ye, Kai & Huang, Sheng, 2021. "An experimental investigation on the passive ventilation and cooling performance of an integrated solar chimney and earth–air heat exchanger," Renewable Energy, Elsevier, vol. 175(C), pages 486-500.
    17. Pooya Lotfabadi & Polat Hançer, 2019. "A Comparative Study of Traditional and Contemporary Building Envelope Construction Techniques in Terms of Thermal Comfort and Energy Efficiency in Hot and Humid Climates," Sustainability, MDPI, vol. 11(13), pages 1-22, June.

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