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Impact of water mist extinguisher construction on parameters of generated drops

Kaźmierak Jan

Architecture Civil Engineering Environment

2020

Vol. 13, no. 4

99--104

The paper analyses the impact that the construction of water mist extinguishers exerts on the size of generated drops. The test was based on the examination of three extinguishers of two producers, which have been available in the market in recent years. The test was carried out with the use of the IPS Drop Spectrum Analyzer (DSA). The device operates by using the photoelectric method to measure the parameters of the extinguishing stream microstructure. There were two measuring ranges: 0_1 414 μm and 0_2 658 μm. The test results present mean diameters of the generated drops, aggregated curves representative of their share as well as the analysis of the quality of spraying the extinguishing medium. The tests have shown that two out of three tested extinguishers do not generate water mist with standard parameters at a distance of 170 cm. The smallest mean diameters of drops were generated by extinguisher B, whereas the biggest ones by extinguisher C The highest level of spraying among all samples was found for extinguisher B. It’s Sauter diameter mean amounted to 564.03 μm. Further, it was shown what impact the construction of water mist extinguishers exerts on the size of generated drops.

Gaśnice : badania wybranych parametrów techniczno-użytkowych

Ludzik M.

Bezpieczeństwo i Technika Pożarnicza

2010

Nr 2

41-50

W niniejszym artykule zdefiniowano podział gaśnic przenośnych ze względu na możliwość wykorzystania do określonych grup pożarów, zastosowany środek gaśniczy, sposób umieszczenia czynnika roboczego, wielkość napełnienia. Ponadto wyjaśniono sposób ich oznakowania stosowany przez producentów oraz przedstawiono budowę etykiety opisowej. W dalszej części opisano najważniejsze parametry techniczno-użytkowe charakteryzujące gaśnice (skuteczność gaśnicza, odporność na korozję zewnętrzną i wewnętrzną, czas działania) oraz sposoby ich ustalania.

In the herein article the division of portable fire-extinguishers was defined as regards: the usage for particular types of fires, fire-extinguishing measures made use of, the way of placing a working factor, the size of repletion. Moreover the way of their marking used by producers was explained and the structure of description label was presented. Furthermore, the most important technical-usage parameters which characterize fire-extinguishers were described (fire-extinguisher efficacy, resistance to external and internal corrosion, the reaction time) and the way of their establishing as well.