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Ecology & Safety, Volume 16, 2022

MEASUREMENT OF AIR STREAM VELOCITY PROFILES, GENERATED BY FIRE PROTECTION UNITS MOBILE FANS
Piotr Kaczmarzyk, Paweł Janik, Piotr Krawiec, Wojciech Klapsa, Rafał Noske
Pages: 42-50
Published: 25 Sep 2022
Views: 313
Downloads: 33
Abstract: Mobile positive pressure fans are an essential tool used during rescue operations during fires inside buildings. Due to the nature of the use of these devices, it is very important that the parameters that determine their effectiveness are properly selected and verified. One of the most important parameters determining their effectiveness is the volume flow rate of the air stream. In order to reliably evaluate the performance of fans, tests should be conducted on the basis of appropriately selected test methodologies. With regard to flow rate tests, it is important that the tests are conducted under conditions that reflect the actual use of mobile fans (open-flow tests). This paper presents the design, manufacturing, and functionality of an innovative stand for evaluating the velocity profile characteristics (and volume of the flow stream) of an air stream generated by mobile fans. The paper also presents the results of a fan that is commonly used during rescue operations. The results of the tests confirmed that the fan positioning parameters (i.e. the distance in front of the door opening and the inclination angle of the impeller) have a dominant influence on the stream flow rate, pumped into the ventilated cubature. Depending on the setup configuration of the fan unit, the discharge flow rate varied from 12087.6 m3/h to 42269.3 m3/h.
Keywords: ppv, positive pressure ventilator, ppa, positive pressure attack, rescue equipment, fan velocity profile, fire tests
Cite this article: Piotr Kaczmarzyk, Paweł Janik, Piotr Krawiec, Wojciech Klapsa, Rafał Noske. MEASUREMENT OF AIR STREAM VELOCITY PROFILES, GENERATED BY FIRE PROTECTION UNITS MOBILE FANS. Journal of International Scientific Publications: Ecology & Safety 16, 42-50 (2022). https://www.scientific-publications.net/en/article/1002333/
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