| 通风系统中带有回风时的污染物浓度计算 |
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| 引用本文： | 杨建荣,李先庭,孟彬彬. 通风系统中带有回风时的污染物浓度计算[J]. 建筑热能通风空调, 2004, 23(2): 1-6 |
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| 作者姓名： | 杨建荣 李先庭 孟彬彬 |
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| 作者单位： | 清华大学建筑技术科学系;清华大学建筑技术科学系;清华大学建筑技术科学系 |
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| 基金项目： | 北京建筑工程学院北京市重点实验室资助项目，清华大学基础研究基金项目(JC2003003) |
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| 摘 要： | 在常见的通风空调系统中，由于回风的存在使得送风口浓度未知。针对传统的计算流体力学(CFD)方法中必须已知送风口浓度的状况，本文对常见的通风空调系统根据送回风的连接形式归纳为二类类型。通过应用送风可及性和基准浓度的概念分别考虑送风口和污染源对房间各点污染物浓度的影响，本文建立了计算送风口浓度和房间各点浓度的直接方法，并模拟展示了该方法在二种空调通风系统中的应用。
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| 关 键 词： | 通风空调 室内空气品质 计算流体力学 污染物 |
| 文章编号： | 1003-0344(2004)02-001-6 |
| 修稿时间： | 2004-01-18 |
An Algorithm for Predicting Contaminant Concentration in Actual Ventilating Systems With Air-Recirculation |
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| Yang Jianrong,Li Xianting and Meng Binbin. An Algorithm for Predicting Contaminant Concentration in Actual Ventilating Systems With Air-Recirculation[J]. Building Energy & Environment, 2004, 23(2): 1-6 |
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| Authors: | Yang Jianrong Li Xianting Meng Binbin |
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| Abstract: | The air-recirculation makes the supplied contaminant concentration unknown in ventilating systems withcomplex connection ways. In order to quickly calculatethe supplied concentration, current ventilating systems areclassified into three types according to their air-recirculation characteristics. Two indices, accessibility of supplied air and base concentration, are used to quantify the impact of air supply and contaminant source on indoor concentration, respectively. Then a new algorithm to directly predict the final concentration is developed, which eliminates the traditional CFD iteration in getting the constant supplied concentration. The application of this algorithm is illustrated in three case simulations. |
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| Keywords: | air-conditioning and ventilating indoor air quality computational fluid dynamics(CFD) contaminant |
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