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Performance Evaluation of a Modular Design of Wind Tower with Wetted Surfaces

Author

Listed:
  • Sajad M.R. Khani

    (Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, QC H3G 1M8, Canada)

  • Mehdi N. Bahadori

    (School of Mechanical Engineering, Sharif University of Technology, Tehran, Iran)

  • Alireza Dehghani-Sanij

    (Department of Mechanical Engineering, Memorial University of Newfoundland, St. John’s, NL A1B 3X5, Canada)

  • Ahmad Nourbakhsh

    (Hydraulic Machinery Research Institute, Department of Mechanical Engineering, University of Tehran, Tehran, Iran)

Abstract

Wind towers or wind catchers, as passive cooling systems, can provide natural ventilation in buildings located in hot, arid regions. These natural cooling systems can provide thermal comfort for the building inhabitants throughout the warm months. In this paper, a modular design of a wind tower is introduced. The design, called a modular wind tower with wetted surfaces, was investigated experimentally and analytically. To determine the performance of the wind tower, air temperature, relative humidity (RH) and air velocity were measured at different points. Measurements were carried out when the wind speed was zero. The experimental results were compared with the analytical ones. The results illustrated that the modular wind tower can decrease the air temperature significantly and increase the relative humidity of airflow into the building. The average differences for air temperature and air relative humidity between ambient air and air exiting from the wind tower were approximately 10 °C and 40%, respectively. The main advantage of the proposed wind tower is that it is a modular design that can reduce the cost of wind tower construction.

Suggested Citation

  • Sajad M.R. Khani & Mehdi N. Bahadori & Alireza Dehghani-Sanij & Ahmad Nourbakhsh, 2017. "Performance Evaluation of a Modular Design of Wind Tower with Wetted Surfaces," Energies, MDPI, vol. 10(7), pages 1-20, June.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:7:p:845-:d:102566
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    References listed on IDEAS

    as
    1. Bahadori, Mehdi N., 1994. "Viability of wind towers in achieving summer comfort in the hot arid regions of the middle east," Renewable Energy, Elsevier, vol. 5(5), pages 879-892.
    2. Chan, Hoy-Yen & Riffat, Saffa B. & Zhu, Jie, 2010. "Review of passive solar heating and cooling technologies," Renewable and Sustainable Energy Reviews, Elsevier, vol. 14(2), pages 781-789, February.
    3. Unknown, 2016. "Energy for Sustainable Development," Conference Proceedings 253270, Guru Arjan Dev Institute of Development Studies (IDSAsr).
    4. Razavi, M. & Dehghani-sanij, A.R. & Khani, M.R. & Dehghani, M.R., 2015. "Comparing meshless local Petrov–Galerkin and artificial neural networks methods for modeling heat transfer in cisterns," Renewable and Sustainable Energy Reviews, Elsevier, vol. 43(C), pages 521-529.
    5. Dehghani-sanij, A.R. & Soltani, M. & Raahemifar, K., 2015. "A new design of wind tower for passive ventilation in buildings to reduce energy consumption in windy regions," Renewable and Sustainable Energy Reviews, Elsevier, vol. 42(C), pages 182-195.
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