技术中心

风管摩擦阻力的直接计算方法【英文篇名】 Direct calculation method of air duct frictional resistance 【作者中文名】 彭小勇; 李惠敏; 【作者英文名】 By Peng Xiaoyong and Li Huimin NanHua University; Hengyang; Hunan Province; China; 【作者单位】 南华大学; 【文献出处】 暖通空调, Hv 摩擦阻力; 计算方法; 【英文关键词】 air duct; frictionai resistance; calculation method; 【摘要】 提出用高精度的反映密度、黏度和温度关系的经验公式和Colebrook公式计算风管摩擦阻力系数的方法。分析和算例表明,用该方法计算,计算结果比采用常用工程设计方法更为准确,为应用计算机进行风道设计提供了直接、简便的方法。 【英文摘要】 Puts forward the calculation method of air duct frictional resistance based on the Colebrook formula and a high accuracy empirical formula reflecting the relation between air density and viscosity and air temperature. Analysis and calculation show that the calculation result by this method is better than that by conventional engineering design methods. It provides direct and simple method for air duct calculation with computers.