技术中心

置换通风的通风效率及其微热环境评价 【英文篇名】 Displacement ventilation effectiveness and evaluation of the micro thermal environment 【作者中文名】 马仁民; 【作者英文名】 Ma Renmin; 【作者单位】 西安建筑科技大学; 【文献出处】 暖通空调, HV 置换通风; 换气效率; 通风效率; 风感; 【英文关键词】 mixing ventilation; displacement ventilation; air exchange efficiency; ventilation efficiency; draft; 【摘要】 讨论了通风有效性与空气分布特性的相关性，分析了混合通风（上送下回）通风效率低于置换通风效率的原因。根据大量的实验资料，分析提出了影响通风效率的若干复合因素，得出了预测置换通风效率的经验式。经综合人体舒适性实验，说明置换通风微热环境能提供居住者整体舒适感，而在肢体下部风感不满意率小于１５％。 【英文摘要】 Discusses correlations between ventilation effectiveness and air distribution, analyses why the ventilation efficiency of mixing ventilation is lower than that of displacement ventilation. Based on experimental data, puts forward a series of compound factors influencing ventilation effectiveness, and develops empirical formulas for predicting the ventilation efficiency. A combined test shows that displacement ventilation can offer satisfactory comfort conditions for the whole body of occupants and the P...