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A simplified mathematical approach for modelling stack ventilation in multi-compartment buildings

机译：用于简化多室建筑物烟囱通风的简化数学方法

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摘要

A simple mathematical model of stack ventilation flows in multi-compartment buildings is developed with a view to providing an intuitive understanding of the physical processes governing the movement of air and heat through naturally ventilated buildings. Rules of thumb for preliminary design can be ascertained from a qualitative examination of the governing equations of flow, which elucidate the relationships between 'core' variables - flow rates, air temperatures, heat inputs and building geometry. The model is applied to an example three-storey office building with an inlet plenum and atrium. An examination of the governing equations of flow is used to predict the behaviour of steady flows and to provide a number of preliminary design suggestions. It is shown that control of ventilation flows must be shared between all ventilation openings within the building in order to minimise the disparity in flow rates between storeys, and ensure adequate fresh air supply rates for all occupants.
机译：建立多室建筑物中烟囱通风流动的简单数学模型，以期直观地了解控制自然通风建筑物中空气和热量流动的物理过程。初步设计的经验法则可以通过对流量控制方程的定性检查来确定，该方程阐明了“核心”变量之间的关系-流量，空气温度，热量输入和建筑物的几何形状。该模型应用于带有进气室和中庭的示例三层办公楼。检查流动的控制方程可用于预测稳定流动的行为并提供许多初步的设计建议。结果表明，必须在建筑物内所有通风口之间共享通风流量控制，以使楼层之间的流量差异最小，并确保所有居住者都有足够的新鲜空气供应率。

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