Estimating the Air Leakage Rate of Smoke Control Doors for Calculations Procedures, Part 2

2. rész

Absztrakt

The extent of smoke spread during building fires is critical, as it can adversely affect both evacuation and firefighting intervention. Smoke migration can occur through structural gaps, the potential for which should be minimised. One way to exclude smoke is to pressurise the structure, and an important starting parameter for the design of this is to know the leakage areas. The need for knowledge of the size of structural gaps has been high since the inception of design methods. This article aims to identify the potential for improving the calculation procedures by using the results of measurements on existing smoke control doors in pressurised vestibules. In this section, the author compares the results of two different measurement methods with a series of measurements in a pressurised vestibule. Using computational procedures, the air flow coefficient and leakage area of the single-leaf smoke control doors under investigation are estimated. Suggestions are made for possible improvements to the design methods.