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A study of the ventilation performance of a series of connected solar chimneys integrated with building

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  • Wei, Du
  • Qirong, Yang
  • Jincui, Zhang

Abstract

A series of connected solar chimneys consisting of an inclined section on the roof and a vertical section near the south wall was studied in a typical two-floor house. Specifically, the effects of the total length and width of the chimney, the inclined angle of the second floor inlet, the length ratio of the vertical to inclined section, and the chimney inclined angle on the chimney ventilation performance were numerically studied. The results showed that the ventilation was improved with the increase of the total chimney length. The air mass flow rate increased firstly then decreased with the chimney width, indicating that there existed an optimal length to width ratio, which was 12:1. Similarly, the mass flow rate increased firstly then decreased with the inclined angle of the second floor chimney inlet. The optimal inclined angle was found to be 4° from the horizontal. At the fixed total chimney length, the air mass flow rate also varied with the length ratio of the vertical to inclined section, and the maximum mass flow rate can be achieved by choosing the longest vertical length within the restriction of the building code. Finally, with the increase of chimney inclined angle, the velocity distribution inside the chimney was improved and the air flow rate increased. These results may provide the theoretical basis for the practical solar building design.

Suggested Citation

  • Wei, Du & Qirong, Yang & Jincui, Zhang, 2011. "A study of the ventilation performance of a series of connected solar chimneys integrated with building," Renewable Energy, Elsevier, vol. 36(1), pages 265-271.
    • Handle: RePEc:eee:renene:v:36:y:2011:i:1:p:265-271
    DOI: 10.1016/j.renene.2010.06.030
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    References listed on IDEAS

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    1. Harris, D.J. & Helwig, N., 2007. "Solar chimney and building ventilation," Applied Energy, Elsevier, vol. 84(2), pages 135-146, February.
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    1. Khosravi, Mohsen & Fazelpour, Farivar & Rosen, Marc A., 2019. "Improved application of a solar chimney concept in a two-story building: An enhanced geometry through a numerical approach," Renewable Energy, Elsevier, vol. 143(C), pages 569-585.
    2. DeBlois, Justin C. & Bilec, Melissa M. & Schaefer, Laura A., 2013. "Design and zonal building energy modeling of a roof integrated solar chimney," Renewable Energy, Elsevier, vol. 52(C), pages 241-250.
    3. Siphiwe Mdlalose & Sipho Sibanda & Tilahun Workneh & Mark Laing, 2022. "Innovative Low-Cost Naturally Ventilated Maize Seed Storage System," Journal of Agriculture and Crops, Academic Research Publishing Group, vol. 8(1), pages 39-49, 01-2022.
    4. Mehrpooya, Mehdi & Shahsavan, Mohsen & Sharifzadeh, Mohammad Mehdi Moftakhari, 2016. "Modeling, energy and exergy analysis of solar chimney power plant-Tehran climate data case study," Energy, Elsevier, vol. 115(P1), pages 257-273.
    5. 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.

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