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Improving Energy Efficiency by Utilizing Wetted Cellulose Pads in Passive Cooling Systems

Author

Listed:
  • Ebrahim Morady

    (Department of Mechanical Engineering, K. N. Toosi University of Technology, Tehran 19967-15433, Iran)

  • Madjid Soltani

    (Department of Mechanical Engineering, K. N. Toosi University of Technology, Tehran 19967-15433, Iran
    Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada
    Waterloo Institute for Sustainable Energy (WISE), University of Waterloo, Waterloo, ON N2L 3G1, Canada
    Advanced Energy Initiative Center, K. N. Toosi University of Technology, Tehran 14176-14411, Iran)

  • Farshad Moradi Kashkooli

    (Department of Mechanical Engineering, K. N. Toosi University of Technology, Tehran 19967-15433, Iran)

  • Masoud Ziabasharhagh

    (Department of Mechanical Engineering, K. N. Toosi University of Technology, Tehran 19967-15433, Iran)

  • Armughan Al-Haq

    (Waterloo Institute for Sustainable Energy (WISE), University of Waterloo, Waterloo, ON N2L 3G1, Canada)

  • Jatin Nathwani

    (Waterloo Institute for Sustainable Energy (WISE), University of Waterloo, Waterloo, ON N2L 3G1, Canada)

Abstract

The effectiveness of using wetted cellulose pads on improving the performance of two conventional passive cooling systems has been evaluated. First, an experimental design was developed to determine the impact of using a wetted cellulose pad on the temperature and velocity of the airflow. A cellulose pad (7090 model) with a cross-sectional area of 0.5 × 0.5 m 2 and three different thicknesses of 10, 15, and 30 cm were selected and tested. The results indicated that using wetted cellulose pads with thicknesses ranging from 10–30 cm decreased the outlet airflow temperature from 11.3 to 13.7 °C on average. For free airflow at velocity 3.5 m/s, the outlet airflow velocity from the wetted cellulose pad decreased to 0.9, 0.7 and 0.6 m/s, respectively, for cellulose pads with thicknesses of 10, 15, and 30 cm. By applying experimental results on a psychrometric chart, the humidity ratio of outlet airflow was obtained between 40–70%. The study established airflow velocity as the critical parameter in passive cooling systems. With the novel concept of combining wetted cellulose pads for passive cooling systems (i.e., wind catchers and induced ventilation), there is good potential to reduce the energy requirements for thermal comfort in buildings in regions with a hot and arid climate.

Suggested Citation

  • Ebrahim Morady & Madjid Soltani & Farshad Moradi Kashkooli & Masoud Ziabasharhagh & Armughan Al-Haq & Jatin Nathwani, 2022. "Improving Energy Efficiency by Utilizing Wetted Cellulose Pads in Passive Cooling Systems," Energies, MDPI, vol. 15(1), pages 1-17, January.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:1:p:369-:d:718031
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    References listed on IDEAS

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    1. Yang, Liu & Yan, Haiyan & Lam, Joseph C., 2014. "Thermal comfort and building energy consumption implications – A review," Applied Energy, Elsevier, vol. 115(C), pages 164-173.
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    3. Wang, Jiangjiang & Zhai, Zhiqiang (John) & Jing, Youyin & Zhang, Chunfa, 2011. "Influence analysis of building types and climate zones on energetic, economic and environmental performances of BCHP systems," Applied Energy, Elsevier, vol. 88(9), pages 3097-3112.
    4. Davide Coraci & Silvio Brandi & Marco Savino Piscitelli & Alfonso Capozzoli, 2021. "Online Implementation of a Soft Actor-Critic Agent to Enhance Indoor Temperature Control and Energy Efficiency in Buildings," Energies, MDPI, vol. 14(4), pages 1-26, February.
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    Cited by:

    1. Xiang Wang & Dong Xiang, 2022. "Energy Flow Modelling Method of Energy Efficiency Improvement for Power-Using Electromechanical Products," Energies, MDPI, vol. 15(14), pages 1-25, July.
    2. Soltani, M. & Moradi Kashkooli, Farshad & Alian Fini, Mehdi & Gharapetian, Derrick & Nathwani, Jatin & Dusseault, Maurice B., 2022. "A review of nanotechnology fluid applications in geothermal energy systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 167(C).

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