技术中心

【英文篇名】 Application of flow distribution method of equivalent circulation area to calculation of pressurized air supply 【下载频次】 ☆ 【作者】 刘朝贤; 【英文作者】 Liu Chaoxian China Southwest Architectural Design Chengdu; China; 【作者单位】 中国建筑西南设计研究院; 【文献出处】 暖通空调 , Heating Ventilating nbsp; 期刊荣誉：中文核心期刊要目总览 ASPT来源刊 中国期刊方阵 CJFD收录刊 【中文关键词】 并联; 串联; 当量流通面积; 流量分配; 风量有效利用率; 【英文关键词】 parallel connection; series connection; equivalent circulation area; flow distribution; effective utilization ratio of air flow; 【摘要】 并联、串联气流的流动规律为:串联气流不论流经多少道门洞或缝隙,其阻力可用当量流通面积来表示;并联气流通路上的压降相等,各通路流量之比与其当量流通面积成正比,即,送入正压间的总流量是按并联气流当量流通面积来分配的。因此,只要得出某一并联通路的流量,防烟系统其他各通路的流量(包括总流量)就可求得。根据防烟技术条件的规定,为抵御烟气入侵,通过内走道与前室(或合用前室)之间的防火门门洞处所必须保证的风速为0.7～1.2m/s,防火门开启面积是确定的,因此便可得出该并联通路的流量,从而可建立各子项的数学模型,为优化防烟方案提供新的手段。 【英文摘要】 The flow pattern of parallel and series airstream is described as follows: regardless of the number of openings and gaps passing by series airstream,the resistance can be represented by the equivalent circulation area;the pressure drop of parallel airstreams is equal,the flow ratio of paths is proportional to the ratio of equivalent circulation area,i.e. the total flow into the positive pressure space is distributed by the equivalent circulation area of parallel airstreams. Therefore if the flow rate of any...