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Effect of guide wall on the potential of a solar chimney power plant

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Listed:
  • Hu, Siyang
  • Leung, Dennis Y.C.
  • Chen, Michael Z.Q.
  • Chan, John C.Y.

Abstract

A solar chimney power plant (SCPP) converts solar thermal energy into electricity by generating a buoyant flow in a chimney. To assist the air flow in shifting its direction from horizontal to vertical, a guide wall (GW) is usually set in the collector-to-chimney transition region. The primary objective of this study is to examine the impact of the GW geometry on the power output of a SCPP. A reduction in mass flow rate after adding a GW in the system was observed in a small-scale experimental prototype. Numerical simulations on a large-scale SCPP further found that the mass flow rate was linearly and inversely proportional to the increase of GW height. The driving force, however, nonlinearly increased with increasing the GW height. Subsequently, the potential maximum power output, which was mainly governed by the driving force, increased with increasing the GW height. Furthermore, a divergent-chimney system which can improve the performance of SCPPs had different reactions with the geometry of GWs compared with a cylindrical-chimney system. Under the optimal GW configuration, the power output of the SCPP increased by ∼40% in a cylindrical-chimney system and by ∼9.0% in a divergent-chimney system with respect to the system without a guide wall.

Suggested Citation

  • Hu, Siyang & Leung, Dennis Y.C. & Chen, Michael Z.Q. & Chan, John C.Y., 2016. "Effect of guide wall on the potential of a solar chimney power plant," Renewable Energy, Elsevier, vol. 96(PA), pages 209-219.
    • Handle: RePEc:eee:renene:v:96:y:2016:i:pa:p:209-219
    DOI: 10.1016/j.renene.2016.04.040
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    References listed on IDEAS

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    1. Koonsrisuk, Atit & Chitsomboon, Tawit, 2013. "Effects of flow area changes on the potential of solar chimney power plants," Energy, Elsevier, vol. 51(C), pages 400-406.
    2. Koonsrisuk, Atit, 2012. "Mathematical modeling of sloped solar chimney power plants," Energy, Elsevier, vol. 47(1), pages 582-589.
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    1. Hu, Siyang & Leung, Dennis Y.C. & Chan, John C.Y., 2017. "Impact of the geometry of divergent chimneys on the power output of a solar chimney power plant," Energy, Elsevier, vol. 120(C), pages 1-11.
    2. Milani Shirvan, Kamel & Mirzakhanlari, Soroush & Mamourian, Mojtaba & Kalogirou, Soteris A., 2017. "Optimization of effective parameters on solar updraft tower to achieve potential maximum power output: A sensitivity analysis and numerical simulation," Applied Energy, Elsevier, vol. 195(C), pages 725-737.
    3. Fallah, Seyyed Hossein & Valipour, Mohammad Sadegh, 2022. "Numerical investigation of a small scale sloped solar chimney power plant," Renewable Energy, Elsevier, vol. 183(C), pages 1-11.
    4. Hu, Siyang & Leung, Dennis Y.C. & Chan, John C.Y., 2017. "Numerical modelling and comparison of the performance of diffuser-type solar chimneys for power generation," Applied Energy, Elsevier, vol. 204(C), pages 948-957.
    5. Seungjin Lee & Yoon Seok Kim & Joong Yull Park, 2018. "Numerical Investigation on the Effects of Baffles with Various Thermal and Geometrical Conditions on Thermo-Fluid Dynamics and Kinetic Power of a Solar Updraft Tower," Energies, MDPI, vol. 11(9), pages 1-14, August.
    6. Seungjin Lee & Saerom Kim & Jonghyun Chae & Joong Yull Park, 2019. "Additive Aerodynamic and Thermal Effects of a Central Guide Post and Baffle Installed in a Solar Updraft Tower," Energies, MDPI, vol. 12(18), pages 1-13, September.

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