尽管自20世纪80年代初以来，建筑规范就已涉及中庭空间的烟雾管理主题，但系统性能并未按照设计目标进行描述，该设计目标将危险条件的发展与特定火灾场景和烟雾产生联系起来。在NFPA 92B（NFPA 1991）出版之前，设计师可能会使用基于质量流的计算方法来预测大体积空间中烟层界面的位置。NFPA 92B增加了一个预测相关性，可在任何给定时间生成烟层界面位置。1993年《国际建筑官员和规范管理者协会（BOCA）建筑规范》对NFPA 92B方法进行了编码，但纳入了两种预测方法。 比较两种方法的中庭面积和纵横比范围。结果表明，这两种方法是不等价的，不会产生可比的结果。为了协调这两种方法，进行了进一步的分析，并开发了一种方法，允许设计师进行可比的危险分析，而不管使用哪种方法。建议使用羽流中心线温度关联来调整最大预期层温度，作为一种协调技术。分析的结果是，建议重新评估用作常规天花板计算方法基础的基本相关性，以使其与不规则天花板计算方法中使用的质量流量/夹带一致。 提供了一系列建议的调整，以在广泛的界面高度范围内对齐规则天花板和不规则天花板计算方法的结果。单位:双关键词:1997年，比较，中庭，排烟，喷射，计算，高度，天花板，不规则，准确性，设计，标准，美国引文:研讨会，ASHRAE交易，第103卷，第2部分，波士顿1997

Although building codes have addressed the subject of smoke management in atrium spaces since the early 1980s, system performance was not described in terms of a design objective that related the development of hazardous conditions to specific fire scenarios and smoke production. Until the publication of NFPA 92B (NFPA 1991), designers were likely to use a mass flow-based calculation method to predict the position of a smoke layer interface in a large-volume space. NFPA 92B added a predictive correlation that generated a smoke layer interface position at any given time. The 1993 Building Officials and Code Administrators International (BOCA) Building Code codified the NFPA 92B approach but incorporated both predictive methods. Compares the two methods for a range of atrium areas and aspect ratios. The results illustrate that the two methods are not equivalent and will not produce comparable results. Further analysis was conducted to reconcile the two methods and develop an approach that will permit designers to produce comparable hazard analyses regardless of the method used. Use of a plume centreline temperature correlation to adjust the maximum expected layer temperature is suggested as a reconciliation technique. A result of the analysis is the recommendation to reevaluate the fundamental correlation used as the basis for the regular ceiling calculation method, in order to bring it into agreement with the mass flow/entrainment used in the irregular ceiling calculation method. A suggested series of adjustments is provided to align the regular ceiling and irregular ceiling calculation method results over a broad range of interface heights.Units: DualKEYWORDS: year 1997, Comparing, atria, smoke ventilation, jets, calculating, height, ceilings, irregular, accuracy, designing, standards, USA