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Numerical Study on Coupled Operation of Stratified Air Distribution System and Natural Ventilation under Multi-Variable Factors in Large Space Buildings

Author

Listed:
  • Ziwen Dong

    (College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 201306, China)

  • Liting Zhang

    (College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 201306, China)

  • Yongwen Yang

    (College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 201306, China)

  • Qifen Li

    (College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 201306, China)

  • Hao Huang

    (College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 201306, China)

Abstract

Stratified air distribution systems are commonly used in large space buildings. The research on the airflow organization of stratified air conditioners is deficient in terms of the analysis of multivariable factors. Moreover, studies on the coupled operation of stratified air conditioners and natural ventilation are few. In this paper, taking a Shanghai Airport Terminal departure hall for the study, air distribution and thermal comfort of the cross-section at a height of 1.6 m are simulated and compared under different working conditions, and the effect of natural ventilation coupling operation is studied. The results show that the air distribution is the most uniform and the thermal comfort is the best (predicted mean vote is 0.428, predicted percentage of dissatisfaction is 15.2%) when the working conditions are 5.9% air supply speed, 11 °C cooling temperature difference and 0° air supply angle. With the coupled operation of natural ventilation, the thermal comfort can be improved from Grade II to Grade I.

Suggested Citation

  • Ziwen Dong & Liting Zhang & Yongwen Yang & Qifen Li & Hao Huang, 2021. "Numerical Study on Coupled Operation of Stratified Air Distribution System and Natural Ventilation under Multi-Variable Factors in Large Space Buildings," Energies, MDPI, vol. 14(23), pages 1-20, December.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:23:p:8130-:d:694831
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    References listed on IDEAS

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    1. Liu, Xiaochen & Zhang, Tao & Liu, Xiaohua & Li, Lingshan & Lin, Lin & Jiang, Yi, 2021. "Energy saving potential for space heating in Chinese airport terminals: The impact of air infiltration," Energy, Elsevier, vol. 215(PB).
    2. Kim, Sang-Chul & Shin, Hyun-Ik & Ahn, Jonghoon, 2020. "Energy performance analysis of airport terminal buildings by use of architectural, operational information and benchmark metrics," Journal of Air Transport Management, Elsevier, vol. 83(C).
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