【摘要】 提供了高层民用建筑地下汽车库机械排风量的计算公式，以１２４０ｍ２的地下汽车库为例给出了几种机械排风和排烟联合应用的方式，结论为：按最大面积２００ｍ２划分有效防烟分区，用一个排烟（风）风机负担整个汽车库的排烟（风）时，机械排风量和机械排烟量大小是相当的，并且此时的排烟风机的风量最小。更多还原

【Abstract】 Provides formulas for determining the air volume to be exhausted from underground parking spaces in highrise buildings. Emphasises the concept of effective smoke preventing zoning. Explains several methods of combined application of mechanical ventilation and smoke extraction with an example of a 1 240 m 2 underground carpark. And concludes that zoning for smoke preventing of a maximum of 200 m 2 each is the most preferable and can minimises the total duty of the fans.更多还原