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Investigation of the Energy Saving Efficiency of a Natural Ventilation Strategy in a Multistory School Building

Author

Listed:
  • Beungyong Park

    (Energy Division, Korea Conformity Laboratories (KCL), Jincheon 27872, Korea)

  • Sihwan Lee

    (Department of Architecture, Shinshu University, 4-17-1 Wakasato, Nagano City 380-8553, Japan)

Abstract

Under-ventilation and high energy consumption are some of the problems associated with school classrooms. Thus, it is necessary to develop a ventilation strategy that is characterized by high energy-saving and ventilation efficiency. To this end, this study aims to investigate natural ventilation as a possible strategy to improve the indoor environment while reducing ventilation loads and maintaining energy costs during intermediate seasons. Ventilation and cooling load reductions based on the opening and closing of several windows were analyzed. Window flow coefficients and ventilation rates were measured and used for computational fluid dynamics (CFD) simulation to obtain pressure coefficients for 16 wind directions. The results obtained showed that the improved natural ventilation strategy could be used to effectively establish required indoor conditions (26 °C, 60% RH). Additionally, compared with the mechanical ventilation system with variable refrigerant flow, this natural strategy resulted in a decrease in energy consumption of approximately 30%. However, its application requires that internal heat gain and CO 2 emissions, which depend on human population density, as well as the room usage schedule should be considered.

Suggested Citation

  • Beungyong Park & Sihwan Lee, 2020. "Investigation of the Energy Saving Efficiency of a Natural Ventilation Strategy in a Multistory School Building," Energies, MDPI, vol. 13(7), pages 1-13, April.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:7:p:1746-:d:341860
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    Citations

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    Cited by:

    1. Young Kwon Yang & Min Young Kim & Yong Woo Song & Sung Ho Choi & Jin Chul Park, 2020. "Windcatcher Louvers to Improve Ventilation Efficiency," Energies, MDPI, vol. 13(17), pages 1-20, August.
    2. Lili Zhang & Lei Tian & Qiong Shen & Fei Liu & Haolin Li & Zhuojun Dong & Jingyue Cheng & Haoru Liu & Jiangjun Wan, 2021. "Study on the Influence and Optimization of the Venturi Effect on the Natural Ventilation of Buildings in the Xichang Area," Energies, MDPI, vol. 14(16), pages 1-17, August.
    3. Mishan Shrestha & Hom Bahadur Rijal, 2023. "Investigation on Summer Thermal Comfort and Passive Thermal Improvements in Naturally Ventilated Nepalese School Buildings," Energies, MDPI, vol. 16(3), pages 1-33, January.
    4. Simon Li, 2023. "Review of Engineering Controls for Indoor Air Quality: A Systems Design Perspective," Sustainability, MDPI, vol. 15(19), pages 1-46, September.
    5. Zhengrong Jiang & Weijun Gao, 2021. "Impact of Enclosure Boundary Patterns and Lift-Up Design on Optimization of Summer Pedestrian Wind Environment in High-Density Residential Districts," Energies, MDPI, vol. 14(11), pages 1-17, May.

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