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A platform for research: civil engineering, architecture and urbanism
Water mist fire fighting - high-pressure water mist nozzles
The use of water mist for fire fighting has increased rapidly. The effectiveness of water mist has been known since beginning of the last century. Commercially it has been applied in fire protection since early thirties. However, the latest boost to the development of the water mist technology has been a ban of halon systems in fire extinguishing. During the long history of water mist system the core of water mist systems has been the nozzle, which does the atomization of water to small droplets. Nozzle principles have not changed a lot since the beginning of the technology. Still the most often used atomization mechanisms are jetting and swirling flow nozzles. Both of them have benefits and drawbacks. In this paper is presented shortly the principle of high-pressure water mist fire fighting, focusing to the nozzle design. The general theory of nozzles is explained, additionally a new water mist nozzle concept is introduced. This nozzle design is a combination of two most popular water mist nozzle types, swirling and jet flow nozzles. Also the first test results with the new nozzle are discussed.
Water mist fire fighting - high-pressure water mist nozzles
The use of water mist for fire fighting has increased rapidly. The effectiveness of water mist has been known since beginning of the last century. Commercially it has been applied in fire protection since early thirties. However, the latest boost to the development of the water mist technology has been a ban of halon systems in fire extinguishing. During the long history of water mist system the core of water mist systems has been the nozzle, which does the atomization of water to small droplets. Nozzle principles have not changed a lot since the beginning of the technology. Still the most often used atomization mechanisms are jetting and swirling flow nozzles. Both of them have benefits and drawbacks. In this paper is presented shortly the principle of high-pressure water mist fire fighting, focusing to the nozzle design. The general theory of nozzles is explained, additionally a new water mist nozzle concept is introduced. This nozzle design is a combination of two most popular water mist nozzle types, swirling and jet flow nozzles. Also the first test results with the new nozzle are discussed.
Water mist fire fighting - high-pressure water mist nozzles
Lakkonen, Max (author)
2007
18 Seiten, 16 Bilder, 13 Quellen
Conference paper
English
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