期刊
ENERGY AND BUILDINGS
卷 92, 期 -, 页码 331-337出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.enbuild.2015.02.002
关键词
Heat flux profile; Building facade; Thermal plume; Subatmospheric pressure
资金
- National Nature Foundation of China [51406046]
- National Basic Research Program of China [2012CB719702]
- State Key Laboratory of Building Safety and Built Environment [BSBE2014-06]
- Key Laboratory of Building Fire Protection Engineering and Technology of MPS
This paper compares the heat flux profile upon building external facade due to ejected thermal plume from window in a subatmospheric pressure (64 kPa, Lhasa, Tibet, altitude: 3650 m) with that in normal pressure (100 kPa, Hefei, altitude: 50 m) and proposes a global correlation for these two pressures. A set of experiments is carried out in a 0.4 m cubic scale room model with a facade wall attached and a window of various geometries in these two altitudes to study the influence of the ambient pressure on the heat flux profile upon external facade due to ejected thermal plume from the room. Water-cooled heat flux gage arrays are employed to measure the vertical heat flux profile upon the facade wall. It is found that the heat flux profile upon the facade wall in the vicinity of window is much higher in the subatmospheric pressure than that in the normal pressure. A new global correlation is proposed to characterize the vertical profile of the heat flux upon external facade in the thermal plume region by accounting for relative entrainment change in these two pressures. (C) 2015 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据