Pressurization system design optimization and air rate control for anteroom in high-rise buildings

Zhuang Xiaoyun, Xu Hongxi and Ma Weijun

2019.09.17

 The anteroom pressurization system for a high-rise building over 24 meters, needs to control the air rates of the firing floor as well as its adjacent floors. Meanwhile, the system needs to response quickly to two kinds of required air rates and their transferring. According to a schematic diagram showed in the 15K606, it requires the positive pressure value inside the anterooms of all three floors maintaining from 25 Pa to 30 Pa, but ignores the differential pressure control requirement when the anteroom door is open. In order to overcome the shortage of schematic diagram and optimize the anteroom pressurization system, presents a solution that each anteroom equips with a specialized electrical dual air rate butterfly valve linkage with three electrical bypass valves. Explains the valve selection method and the design logic based on a system calculation example.