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Analytical models for evaluating buoyancy-driven ventilation due to stack effect in a shaft considering heat transfer from shaft interior boundaries

机译:考虑轴内部边界传热的轴心烟囱效应引起的浮力驱动通风的分析模型

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摘要

Stack effect is a dominant driving force for building natural ventilation.Analytical models were developed for the evaluation of stack effect in a shaft,accounting for the heat transfer from shaft interior boundaries.Both the conditions with constant heat flux from boundaries to the airflow and the ones with constant boundary temperature were considered.The prediction capabilities of these analytical models were evaluated by using large eddy simulation(LES) for a hypothetical shaft.The results show that there are fairly good agreements between the predictions of the analytical models and the LES predictions in mass flow rate,vertical temperatures profile and pressure difference as well.Both the results of analytical models and LES show that the neutral plane could locate higher than one half of the shaft height when the upper opening area is identical with the lower opening area.Further,it is also shown that the analytical models perform better than KLOTE's model does in the mass flow rate prediction.

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  • 来源
    《中南大学学报(英文版)》 |2012年第3期|651-656|共6页
  • 作者单位

    Faculty of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, China;

    Faculty of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, China;

    Faculty of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, China;

    Faculty of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, China;

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  • 入库时间 2022-08-18 01:07:37
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