Heat flux profile upon building facade due to ejected thermal plume from window in a subatmospheric pressure at high altitude

Tang, Fei; Hu, Longhua; Lu, Kaihua; Zhang, X.C.; Shi, Qin

doi:10.1016/j.enbuild.2015.02.002

Cited by 18 publications

(3 citation statements)

References 23 publications

(45 reference statements)

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“…Figures [14][15][16] show the radial temperature distribution and window plume propagation at different heights of the central section of the internal plume in a confined space with a distance D (D = 10 m) (due to the same conclusions obtained, this study only shows the working condition of Q = 10 MW). It can be observed that when the distance D is large, the radial temperature inside the confined space can approximate a Gaussian distribution, and the spread of the plume varies under different windows.…”

Section: Radial (Perpendicular To the Building Facade) Temperature Di...mentioning

confidence: 76%

“…When the window width is small, the heat flow formed by the exterior facade is small. Delichatsios and Lee Yee-ping [14,15] introduced a feature length and studied the effect of vertical barriers on the ejecting flame height. They proposed a flame height correction model when the distance between vertical barriers is less than the feature's length.…”

Section: Introductionmentioning

confidence: 99%

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The Influence of Confined Space Size on the Temperature Distribution Characteristics of Internal Window Plume from Well-Ventilated Compartment Fires

Dong,

Li,

et al. 2024

Fire

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In this research, the influence of confined space size on the temperature distribution characteristics of internal window plumes from well-ventilated compartment fires was studied. Theoretical analysis was firstly used to establish a mathematical model for the smoke after ejecting from the window in the space. The study considered fire heat release rate and vertical height as dependent variables. Numerical simulations and experimental methods were carried out to study the temperature variations. A critical distance L2 was obtained. Results show that when the space D between the vertical retaining wall and the building façade is greater than L2, the variation of D has little influence on radial temperature. Once D is less than L2, the radial temperature distribution inside the confined space will tend to be consistent, and the temperature in the confined space sharply increases as D decreases. In addition, a dimensionless model was derived to quantify the relationship between temperature rise and vertical height. The experimental and numerical simulation results were processed, which are in good agreement with the model. The study can provide a framework for managing building safety.

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Section: Radial (Perpendicular To the Building Facade) Temperature Di...mentioning

confidence: 76%

Section: Introductionmentioning

confidence: 99%

The Influence of Confined Space Size on the Temperature Distribution Characteristics of Internal Window Plume from Well-Ventilated Compartment Fires

Dong,

Li,

et al. 2024

Fire

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“…The heat release rate of the virtual rectangular fire could be calculated by taking off the inside heat release rate according to the ventilation factor from the total heat release rate that estimated by the mass loss rate of fuel. The established theory was further developed by Tang et al, 10,11 for different boundary conditions. Ji et al, 12,13 conducted experiments to study how the environment wind influenced on the thermal plume ejecting out compartment.…”

Section: Introductionmentioning

confidence: 99%

Maximum temperature rise of fire plume ejected out of the compartment window with a horizontal eave

Gao

et al. 2020

Fire and Materials

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Summary This study focuses on the maximum temperature rise of fire plume ejected out of the compartment window with a horizontal eave. Based on the symmetry of ejected plume and pictures recorded by the cameras in the study, the shape of ejected thermal plume out of the window under the eave is suggest as an isosceles trapezoid, and the ejected thermal plume rising at the edge of the eave is assumed to be a rectangular fire source. The dimensions of the rectangular fire source are theoretically deduced for compartment fire process of different window geometry, width of eave, and heat release rate, according to the conservation of plume mass. The previous predictive model for plume temperature proposed by Quintiere is popularized to the ejected flame above an eave by including the dimensions of the rectangular fire source as well as the width of eave. The results would provide theoretical guidance to the application of fireproof eave in high‐rise building for fire protection designs.

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Experimental Investigation on Lateral Temperature Profile of Window-Ejected Facade Fire Plume with Ambient Wind

Ren

Sun

2019

Fire Technol

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Heat flux profile upon building facade due to ejected thermal plume from window in a subatmospheric pressure at high altitude

Cited by 18 publications

References 23 publications

The Influence of Confined Space Size on the Temperature Distribution Characteristics of Internal Window Plume from Well-Ventilated Compartment Fires

The Influence of Confined Space Size on the Temperature Distribution Characteristics of Internal Window Plume from Well-Ventilated Compartment Fires

Maximum temperature rise of fire plume ejected out of the compartment window with a horizontal eave

Experimental Investigation on Lateral Temperature Profile of Window-Ejected Facade Fire Plume with Ambient Wind

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