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

Dong, Ziwen; Zhang, Liting; Yang, Yongwen; Li, Qifen; Huang, Hao

doi:10.3390/en14238130

Open AccessArticle

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

by

Ziwen Dong

,

Liting Zhang

^*,

Yongwen Yang

^*,

Qifen Li

and

Hao Huang

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

^*

Authors to whom correspondence should be addressed.

Energies 2021, 14(23), 8130; https://doi.org/10.3390/en14238130

Submission received: 3 November 2021 / Revised: 23 November 2021 / Accepted: 1 December 2021 / Published: 3 December 2021

(This article belongs to the Collection Feature Papers in Energy, Environment and Well-Being)

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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.

Keywords: stratified air conditioning; natural ventilation; large space buildings; airport terminals

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MDPI and ACS Style

Dong, Z.; Zhang, L.; Yang, Y.; Li, Q.; Huang, H. Numerical Study on Coupled Operation of Stratified Air Distribution System and Natural Ventilation under Multi-Variable Factors in Large Space Buildings. Energies 2021, 14, 8130. https://doi.org/10.3390/en14238130

AMA Style

Dong Z, Zhang L, Yang Y, Li Q, Huang H. Numerical Study on Coupled Operation of Stratified Air Distribution System and Natural Ventilation under Multi-Variable Factors in Large Space Buildings. Energies. 2021; 14(23):8130. https://doi.org/10.3390/en14238130

Chicago/Turabian Style

Dong, Ziwen, Liting Zhang, Yongwen Yang, Qifen Li, and 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 14, no. 23: 8130. https://doi.org/10.3390/en14238130

APA Style

Dong, Z., Zhang, L., Yang, Y., Li, Q., & Huang, H. (2021). Numerical Study on Coupled Operation of Stratified Air Distribution System and Natural Ventilation under Multi-Variable Factors in Large Space Buildings. Energies, 14(23), 8130. https://doi.org/10.3390/en14238130

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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

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