浅谈中庭烟气管理系统

Smoke Management Systems for Large Volume Space

在中庭和其他大空间建筑中没有传统的建筑分隔 ,这些建筑分隔对于防火保护有重要作用。而且 ,在这种大空间建筑中 ,喷淋系统的作用是十分有限的。在这种情况下 ,中庭烟气管理系统的作用就显得十分重要。它的主要作用是 :在中庭中保持一个极限环境 ,从而使人员不会受到火灾所产生的烟和热的危害。这就要求在规定的逃生时间内 ,保证烟气层存在于规定的逃生安全高度以上。中庭烟气管理系统主要有 3种方式 :烟气填充、自然排烟和机械排烟。文中简要的介绍了这 3种方式的设计方法和原则 。

Atria and other large volume space do not have the compartmentation that has traditionally been a major contributor of fire protection.The effectiveness of sprinklers in these large volume spaces is limited. For these reasons, smoke management systems for large volume spaces is of particular importance. Their primary goal is to maintain an enviroment in which the impact of smoke and heat on occupants is not life threatening. This involves keeping the height of the smoke layer above the highest level of occupancy for a defined period of time, longer than the expected time to evacuate the building. Three approaches to these systems are smoke filling , gravity smoke venting ,and smoke exhaust .This paper describes the design approaches to smoke management to achieve fire safety in atrium.