本文介绍了美国供暖、制冷和空调工程师协会（ASHRAE）和加拿大国家研究委员会发起的一个项目的初步结果，该项目旨在调查由通讯空间中的喷淋火灾导致的烟雾移动到相邻的大型开放区域，如中庭或零售商场。本文还回顾了近年来关于喷灌喷雾与烟层相互作用的研究。此外，还讨论了商业和办公用房的全面火灾试验文献中的信息。 作为联合项目的一部分，建立了一个大型试验设施，以调查喷水灭火的烟气流动。文中介绍了该装置。讨论了使用丙烷燃烧器系统进行稳态燃烧试验的结果。这些测试表明，根据火灾大小，可能会出现两种烟流状态。对于热释放率较低的火灾，烟气温度在隔间开口高度上是均匀的，接近环境温度。在这种情况下，烟雾不具有浮力，并在开口附近积聚。 随着热释放速率的增加，空气和烟雾的流动呈现出两个区域。烟雾从炎热的上层舱里冒了出来。火灾试验结果用于确定烟气流动状态的近似限值。进行了初步试验，以研究反向气流系统在限制试验室和相邻区域之间烟流方面的有效性。本部分调查也提供了初步结果。单元:科学:研讨会，ASHRAE交易，第106卷，第页。1.

This paper presents the initial results of a project initiated by the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) and the National Research Council of Canada to investigate smoke movement resulting from a sprinklered fire in a communicating space into an adjacent large open area such as an atrium or retail mall. Recent research on the interaction of sprinkler spray with a smoke layer is also reviewed. In addition, information in the literature from full-scale fire tests of mercantile and office occupancies is discussed. As part of the joint project, a large-scale test facility was established to investigate smoke flow for sprinklered fires. This facility is described in the paper. The results of steady-state fire tests using a propane burner system are discussed. These tests indicate that two smoke flow regimes can occur depending on the fire size. For fires with low heat release rates, the smoke temperature was uniform over the height of the compartment opening and was near ambient. Under this condition, the smoke was nonbuoyant and accumulated near the opening. With higher heat release rates, a two-zone air and smoke flow regime resulted. The smoke exited the compartment in the hot upper layer. The fire test results were used to determine approximate limits for the smoke flow regimes. Preliminary tests were conducted to investigate the effectiveness of opposed airflow systems in limiting smoke flow between the test compartment and the adjacent area. Initial results are also provided for this portion of the investigation.Units: SI