本文基于ASHRAE研究项目RP-1447的研究结果。加拿大国家研究委员会（NRC）进行了全面的火灾实验，以调查是否需要压力补偿系统来维持加压楼梯井内的稳定状态。在NRC 10层测试设施内进行了10次测试，设施内的楼梯间加压。测试是在消防楼层的楼梯间门关闭，其他楼层的选定楼梯间门打开的情况下进行的。通过改变打开楼梯间门的数量和位置，测试了两种火灾场景，即灰烬喷淋火灾和非喷淋火灾。 对带压楼梯井和无压楼梯井的性能进行了实验分析。在不补偿压力损失的情况下，打开楼梯间门后，消防楼层楼梯间门上的压差显著降低。然而，在屏蔽喷淋火灾和非喷淋火灾情况下，只要消防楼层的门关闭，无补偿楼梯间就可以维持30分钟。得出的结论是，如果基础增压系统满足设计压差的要求，并适当布置空气喷射点，则只要在试验中使用的喷水和非喷水火灾场景中，防火层上的门关闭，楼梯间将保持可用。 引用:2016年年度会议，密苏里州圣路易斯，2016年交易，第122卷。2.

This paper is based on findings resulting from ASHRAE Research Project RP-1447.The National Research Council of Canada (NRC)conducted full-scale fire experiments to investigate whetherpressurecompensatingsystems areneededto maintain tenableconditions within pressurized stairwells. Ten tests wereconducted in the NRC 10-story test facility with the stairwellin the facility pressurized. The tests were conducted with thestairwell door on the fire floor closed and selected stairwelldoors on the other floors open. Two fire scenarios with ashielded sprinklered fire and a nonsprinklered fire were testedwith varying number and location of open stairwell doors.Tenability analyses were conducted with experimental test results to investigate the performance of the pressurized stairwell with and without pressure compensating systems. Without compensating for pressure losses, the pressure difference across the stairwell door on the fire floor decreased considerably with open stairwell doors. However, a noncompensated stairwell remained tenable for 30 minutes as long as the door on the fire floor was closed both for the shielded sprinklered fireandthe nonsprinklered fire scenarios. It is concluded that if the base pressurization system meets the requirement of the design pressure difference with a proper arrangement of air injection points, the stairwell will remain tenable as long as the door on the fire floor is closed for both sprinklered and nonsprinkled fire scenarios used in the tests.