Study on the Influence and Optimization of the Venturi Effect on the Natural Ventilation of Buildings in the Xichang Area

Lili Zhang, Lei Tian, Qiong Shen, Fei Liu, Haolin Li, Zhuojun Dong, Jingyue Cheng, Haoru Liu and Jiangjun Wan
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Lili Zhang: College of Architectural and Urban-Rural Planning, Dujiangyan Campus, Sichuan Agricultural University, Ya’an 611830, China
Lei Tian: College of Architectural and Urban-Rural Planning, Dujiangyan Campus, Sichuan Agricultural University, Ya’an 611830, China
Qiong Shen: College of Architectural and Urban-Rural Planning, Dujiangyan Campus, Sichuan Agricultural University, Ya’an 611830, China
Fei Liu: College of Architectural and Urban-Rural Planning, Dujiangyan Campus, Sichuan Agricultural University, Ya’an 611830, China
Haolin Li: College of Architectural and Urban-Rural Planning, Dujiangyan Campus, Sichuan Agricultural University, Ya’an 611830, China
Zhuojun Dong: College of Architectural and Urban-Rural Planning, Dujiangyan Campus, Sichuan Agricultural University, Ya’an 611830, China
Jingyue Cheng: College of Architectural and Urban-Rural Planning, Dujiangyan Campus, Sichuan Agricultural University, Ya’an 611830, China
Haoru Liu: College of Architectural and Urban-Rural Planning, Dujiangyan Campus, Sichuan Agricultural University, Ya’an 611830, China
Jiangjun Wan: College of Architectural and Urban-Rural Planning, Dujiangyan Campus, Sichuan Agricultural University, Ya’an 611830, China

Energies, 2021, vol. 14, issue 16, 1-17

Abstract: Natural ventilation is a way to reduce the energy consumption of building operations and improve the indoor living environment comfort. The venturi cap is designed with a roof, grille and wind deflector to intensify the natural ventilation of buildings. The structural parameters of the venturi cap were designed using an orthogonal design. Fluid analysis software was used for numerical simulation, and variance analysis was used to study the importance of seven influence factors: the width of the roof opening, the roof slope, the height of the wind deflector, the horizontal width of the wind deflector, the angle of the wind deflector, the angle of the grille, and the spacing of the grille slices. The results show that the most significant influencing factor is the width of the roof opening, while significant influence factors include the angle of the grille and the horizontal width of the wind deflector. Additionally, the optimum parameter combination for ventilation performance at the research level was put forward, with the proposed combination achieving a volume flow rate of 5.507 m 3 /s. The average temperature of the horizontal plane at a height of 1.2 m above the ground was 3.002 K lower than that without a venturi cap, which provides a reference for the optimization of indoor ventilation design in buildings in the Xichang area.

Keywords: natural ventilation; venturi effect; orthogonal design; numerical simulation; variance analysis (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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