建筑房间穿堂通风流量系数特性的试验研究

摘要

An experimental system was established for cross ventilation in a model room,it can be realized several cases under various opening configurations and different flow rates.The aim of the experiment was to examine the flow rates and pressure differences through every opening.And on this basis,according to the principle of building ventilation,the change laws of dis-charge coefficients of windward opening,leeward opening and the model room were analyzed.The result of the investigation will play a positive role in forecasting flow rate of buildings.%建立了一个房间穿堂通风的模型试验系统，实现了不同尺寸的相对开窗组合及风量大小的多种工况，对模型房间的通风量和几个断面的压差进行了检测，在此基础上，依据建筑通风基本原理，分析了房间进、出口开窗流量系数和房间总流量系数的大小及变化规律。其成果对提高建筑房间穿堂通风预测的可靠性具有一定的指导意义。