Experimental investigation on transient natural ventilation driven by thermal buoyancy
作者: Xiufeng YangKe ZhongHui ZhuYanming Kang
作者单位: 1School of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
2School of Energy and Power Engineering, Yangzhou University, Yangzhou 225127, China
刊名: Building and Environment, 2014, Vol.77 , pp.29-39
来源数据库: Elsevier Journal
DOI: 10.1016/j.buildenv.2014.03.013
关键词: Full-scale experimentTransient natural ventilationThermal buoyancyInitial temperature differenceVent characteristic
英文摘要: Abstract(#br)Full-scale experiments were carried out to explore the effects of the initial temperature difference between the interior and exterior and the vent characteristics on the transient development of natural ventilation driven by thermal buoyancy. Air temperature and tracer gas concentration in a test chamber were measured and the experimental results were compared with the theoretical predictions. It was found that the initial temperature difference has a large influence on the thermal stratification, the concentration distribution of tracer gas, the flow rate and the removal rate of tracer gas. The time taken to reach steady-state ventilation is shorter for a larger vent if the initial indoor temperature is greater than or equal to the outdoor temperature. For a pre-cooled...
全文获取路径: Elsevier  (合作)
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影响因子:2.43 (2012)

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