商场及购物中心的排烟设计

Smoke control design for stores and shopping centres

本文针对装有自动喷洒灭火系统的商场和购物中心，在规定了＂设计火灾规模＂（即疏散时间内火灾范围为周长１２ｍ，放热速率为５ＭＷ）的条件下，提出了蓄烟拱的规模、烟流量、烟层温度、档烟垂壁尺寸、排烟口数量和面积等计算公式、数据和实验曲线，讨论了排烟系统的基本功能、挡烟垂壁的设置、自动洒水对烟气的冷却作肝、进气口的风速、自然排烟和强制排烟等具体问题。

For stores and shopping centres with automatic sprinkling systems.in the condition of design fire scale i.e.12m in perimeter of fire area and 5 MW in heat release rate for the evacuating period, the author proffers formulas, data and experimental curves for calculating the size of the smoke reservoir.smoke flow,smoke layer temperature,dimensions of smoke bafflers and number and area of smoke exhaust openings and discusses basic functions of smoke control systems. installation of smoke bafflers,smoke cooling by the automatic sprinkling, wind speeds in air inlets.and natural and mechanical smoke control.