中美技术标准楼梯间加压送风系统风量计算方法对比分析
Comparative analysis on calculation methods of supply airflow to pressurized stairwells between technical standards of China and the United States
摘要：
聚焦疏散楼梯间加压送风系统设计,对比分析了中美两国现行相关技术标准在设计目标、风量计算模式与方法,以及压差、风速、设计开启门数量等方面规定的异同。认为中国标准中有关内容存在一些需要修改完善的问题,美国标准所采用的设计方法较为科学合理,值得学习借鉴。
Abstract：
Focusing on design approaches of air supply systems in pressurized exit stairwells, this paper delves into a comparative analysis of design objectives, calculation mode and method employed for determining supply airflow based on criteria such as pressure differentials, airflow velocities, and number of doors designed to open. Comparison is drawn between current correlating technical standards of China and the United States, and reveals that there are aspects in Chinese standards that necessitate revision and enhancement. On the other hand, the design approach advocated by American standard emerges as more scientific and rational, meriting consideration and adoption.
Keywords:exit stairwell pressurization system; design objective; calculation mode and method of supply airflow; orifice equation; pressure difference; airflow velocity; number of doors designed to open; CONTAM