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在没有通风的教室中对室内空气分层的CFD模拟研究和实验分析:西班牙的一个案例研究

Carmela Concilio¹, Patricia Aguilera Benito², Carolina Piña Ramírez³

¹University of Salerno, Department of Civil Engineering, Fisciano, Italy.

|July 11, 2024

概括

课堂实验室内的室内空气通风不良导致了显著的空气分层和增加的二氧化碳 (CO2) 水平. 这项研究强调了与封闭空间通风不足相关的健康风险.

科学领域:

环境科学环境科学
建筑物理建筑物理
职业健康职业健康职业健康

背景情况:

室内空气通风不良与健康问题和呼吸系统疾病有关.
没有提供通风的课堂-实验室环境可能会给健康带来潜在的风险.
由于温度梯度造成的空气分层可能会影响室内空气质量.

研究的目的:

在自然通风的教室-实验室中调查室内空气质量.
在温度和二氧化碳分布方面分析空气分层.
评估乘客配置对室内空气质量的影响.

主要方法:

在三个高度进行温度,湿度,压力和二氧化碳的时间序列测量.
开发了一个计算流体动力学 (CFD) 模型,解决纳维埃-斯托克斯方程.
模拟了三个乘客场景:坐着,站着和混合的位置.

主要成果:

观察到由乘客产生的热量和密度梯度驱动的显著空气分层.
CFD模型准确预测了温度分布,最大相对误差为3.5%.
随着时间的推移,二氧化碳度增加,根据乘客的配置和身高而有所不同.

结论:

封闭空间的通风不足导致有害的空气分层.
乘客的行为显著影响室内空气质量和二氧化碳水平.
了解热力学对于管理建筑物内的室内空气质量至关重要.

关键词:

空气分层是指空气的分层.在 CFD 交易中,我们可以看到 CFD.二氧化碳度度的二氧化碳.室内空气质量室内空气质量室内通风室的通风方式污染物的污染物没有通风的房间.

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