Determination of pressure difference coefficient of shuttle elevator doors in super high-rise buildings under stack effect

Xie, Mengxiao; Wang, Jian

doi:10.1016/j.buildenv.2023.110076

Cited by 5 publications

(1 citation statement)

References 32 publications

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“…Environmental factors primarily include thermal buoyancy induced by an indoor/outdoor temperature difference and wind conditions. The effects of thermal buoyancy and wind on internal pressure difference have been 2 of 17 extensively studied [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23], with various empirical prediction formulas proposed [14][15][16][17][18]. The studies showed that the vertical distribution of internal pressure difference due to thermal buoyancy is not only determined by the inside/outside temperature difference but also related to the distance from the neutral pressure layer (NPL) [14,19].…”

Section: Introductionmentioning

confidence: 99%

Combined Effects of Thermal Buoyancy, Wind Action, and State of the First-Floor Lobby Entrance on the Pressure Difference in a High-Rise Building

Xu,

Su,

Lou

et al. 2024

Energies

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The stack effect in high-rise buildings, stemming from an inside/outside temperature difference, may produce a significant pressure difference on the elevator doors, potentially causing elevator malfunctions. This effect can also be influenced by wind action and human behaviors, e.g., opening/closing of building entrances. In this study, a wind tunnel test was conducted to determine the real wind pressure distribution on a high-rise building in northern China. A numerical simulation utilizing the Conjunction of Multizone Infiltration Specialists software (COMIS) was carried out to investigate the pressure difference of elevator doors under the effects of thermal buoyancy, wind action, and opening/closing of the first-floor lobby entrance. An alternative solution of a locally strengthened envelope is proposed and validated for the studied building zone. The study reveals that the opening of the first-floor lobby entrance increases the pressure difference regardless of the environmental conditions, and the increase of wind speed tends to increase the pressure difference in winter but decrease it in summer. The proposed countermeasure combination, involving using revolving doors instead of swing doors, increasing additional partitions, and strengthening the local building envelope, was found to be synergistic and effective in reducing the pressure difference inside the building. The research findings offer practical engineering solutions for mitigating elevator door pressure challenges in high-rise buildings.

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