THE IMPACT OF TERMINAL CONFIGURATIONS IN IMPINGING JET VENTILATED ROOM
THE IMPACT OF TERMINAL CONFIGURATIONS IN IMPINGING JET VENTILATED ROOM
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终端配置对冲击式喷射通风房间的影响
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
M. Navvab
中科院分区：
文献类型：
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作者：
J. Varodoumpun;M. Navvab
冲击射流通风是90年代末提出的一种利用层结的中高速通风方式。这一特性使得IJV易于控制和操作，同时可以改善室内空气品质（IAQ）。在众多变量中，码头布局对国际合资车辆的设计至关重要，需要进行全面的研究。在建筑环境中，终端配置可以根据IJV喷嘴的布置进行分类，包括径向、壁和角。通过监测温度和速度，射流抛出，这是给定的最大速度的射流，如在0.25，0.5，0.75，或1米/秒（50，100，150，200 fpm），可以通过使用所提出的数学模型估计。使用全尺寸和计算流体动力学（CFD）模拟，与现有的混合射流通风（MJV）和新提出的IJV教室进行了研究。结果表明，IJV具有更高的通风效率和更小的通风量。因此，可以同时促进IAQ、热舒适性和节能。由于IJV在大型教室应用中显示出良好的效果，IJV可能适用于其他建筑应用，如实验室，办公室，手术室，中庭等。
Introduced in late 90’s, Impinging Jet Ventilation (IJV) is the system that can utilize stratification, while supplying with medium to high velocity. This characteristic makes IJV easy to be controlled and operated, while room Indoor Air Quality (IAQ) can be improved. Among many variables, terminal configurations are important for IJV design and require comprehensive studies. In architectural setting, the terminal configurations can be categorized by the placement of IJV nozzles including radial, wall, and corner. By monitoring temperature and velocity, the jet throw, which is the given maximum velocity of jet stream such as at 0.25, 0.5, 0.75, or 1m/s (50, 100, 150, 200fpm), can be estimated by using the proposed mathematical models. Using full scale and Computational Fluid Dynamics (CFD) simulation, a classroom with both existing Mixing Jet Ventilation (MJV) and newly proposed IJV was studied. The results show that IJV produces higher ventilation effectiveness and causes less draft. Accordingly, IAQ, thermal comfort, and energy conservation can be promoted simultaneously. Since IJV shows the promising results in large classroom application, IJV might be suitable for other architectural applications such as laboratory, office, operating room, atrium, etc.