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A performance-based approach to car park ventilation design

机译：基于性能的停车场通风设计方法

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摘要

In recent years, with the provision of 'deemed to satisfy' conditions introduced into the Building Code of Australia, the performance-based approach has been widely used in building design. Previously, designers had to follow the prescriptive methods set down in national or international standards, which may inhibit the use of innovative design approaches. Carparks in large shopping centres are often multi-level and they require large volumes of fresh air to dilute the pollutants emitted by car engines. There are many factors such as ambient carbon monoxide (CO) concentration, average vehicle engine CO emission rate, de-park time, exit time, and wall or roof openings, that may influence the ventilation requirement. This paper lists these factors and discusses their implications on carpark ventilation design. A time-based dilution model for fully enclosed carparks, and a natural ventilation model for hybrid ventilation of partially open carparks are described. The design method has been applied to a number of shopping centre carparks in Sydney. Preliminary on-site CO measurements have shown that the performance-based design methodology is suitable for estimating the ventilation requirements of large shopping centre carparks.
机译：近年来，随着澳大利亚《建筑规范》引入了“满足条件”的规定，基于性能的方法已广泛用于建筑设计中。以前，设计人员必须遵循国家或国际标准中规定的规定方法，这可能会抑制创新设计方法的使用。大型购物中心的停车场通常是多层的，它们需要大量的新鲜空气以稀释汽车发动机排放的污染物。有许多因素会影响通风要求，例如环境一氧化碳（CO）浓度，平均车辆发动机CO排放率，停车时间，出口时间以及墙壁或车顶开口。本文列出了这些因素，并讨论了它们对停车场通风设计的影响。描述了用于全封闭停车场的基于时间的稀释模型，以及用于部分开放停车场的混合通风的自然通风模型。该设计方法已应用于悉尼的许多购物中心停车场。初步的现场CO测量表明，基于性能的设计方法适合估算大型购物中心停车场的通风需求。

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