Examination of Compressed Air Foam (CAF) for interior fire fighting

We have developed a new type of hose nozzle, which uses either water or compressed air foam (CAF), as a more efficient fire-fighting strategy. In this paper, a description of the measured spray range and foam expansion of both the prototype nozzle and conventional nozzles is given. The results show that the spray range of the prototype nozzle is equal or superior to that of conventional nozzles. The foam expansion capability of the prototype nozzle is far superior to that of existing nozzles. From these results, it was confirmed that the new type of hose nozzle suggested in this paper will be an effective addition to existing firefighting equipment, resulting in a more efficient firefighting strategy.

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Fire-fighting. Positive-pressure proportioning systems (PPPS) and compressed-air foam systems (CAFS)

10.3403/30250556 ◽

2014 ◽

Keyword(s):

Fire Fighting ◽

Compressed Air ◽

Positive Pressure

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A comparative study of drainage characteristics in AFFF and FFFP compressed-air fire-fighting foams

Fire Safety Journal ◽

10.1016/s0379-7112(01)00024-8 ◽

2002 ◽

Vol 37 (1) ◽

pp. 21-52 ◽

Cited By ~ 51

Author(s):

S.A. Magrabi ◽

B.Z. Dlugogorski ◽

G.J. Jameson

Keyword(s):

Comparative Study ◽

Fire Fighting ◽

Compressed Air

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Consideration of Thermodynamic Processes Formation of Compressed-Air Foam in Design Compressed Air Foam Systems

Materials Science Forum ◽

10.4028/www.scientific.net/msf.1006.11 ◽

2020 ◽

Vol 1006 ◽

pp. 11-18

Author(s):

Anatolii Kodrik ◽

Oleksandr Titenko ◽

Stanislav Vinogradov ◽

Stanislav Shakhov

Keyword(s):

Physical Properties ◽

Mathematical Models ◽

Physical Characteristics ◽

Fire Fighting ◽

Compressed Air ◽

Thermodynamic Process ◽

Technological Factors ◽

Mixing Chamber ◽

Over Time ◽

Thermodynamic Processes

The main problem with creating compressed air systems is to properly regulate the flow of water and the flow of air that is fed into the mixing chamber so as to continuously provide a foam that must have adequate fire-fighting properties and remain stable over time. The process of obtaining compression foam is a thermodynamic process, which depending on the specified technological factors can be both isothermal and adiabatic. The nature of the process determines both the geometric and physical properties of the foam, and its possible fluctuations can lead to changes in the physical characteristics of the foam. The work provides recommendations for determining the type of thermodynamic process, which makes it possible to improve the accuracy when creating mathematical models of mobile plants for the production of CAF.

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