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Wyszukujesz frazę "suppression systems" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
Engine rooms fire safety – fire-extinguishing system requirements
Autorzy:
Ubowska, A.
Szczepanek, M.
Powiązania:
https://bibliotekanauki.pl/articles/135152.pdf
Data publikacji:
2016
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
fire-extinguishing systems
suppression systems
engine room
safety
pressure water spraying
requirements
Opis:
This article discusses requirements for the extinguishing systems in the engine room. The sources of fire hazards in engine rooms were characterized. The causes and consequences of selected engine room fires that occurred within the last five years were presented. The basic requirements for the fire-extinguishing systems installed in engine rooms were scrutinized. The most commonly used fire-extinguishing systems in engine rooms are the ones containing a gaseous extinguishing agent. Their main advantages are short response time after agent release and the ability to supply an extinguishing medium to areas that are hard to access. The agent used in such systems does not cause damage and there is no need to remove its residues after fighting the fire, as in the case of other agents such as foams. As an example, a CO2 system was characterized, as it is the most frequently used in engine rooms.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2016, 48 (120); 51-57
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research method of dynamic capability of an actuating block of the SSP-FK aircraft fire suppression system in false alarm aspect
Autorzy:
Szelmanowski, A.
Zieja, M.
Głyda, K.
Tokarski, T.
Powiązania:
https://bibliotekanauki.pl/articles/244205.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
transport
aircraft fire suppression systems
research
simulation methods
aircraft fire protection
Opis:
Numerous cases of self-activation of the SSP-FK aircraft fire suppression system (including commissioning of valves and extinguishing tanks) testify about the fact that it is not yet fully understood in the technical aspect, and because of the performed role on the aircraft is the basic element to ensure flight safety. Solving problems with false fire signalling of the SSP-FK system is an important issue for the safe operation of aircraft and military helicopters, because it is preventive (to warn the crew of the possibility of fire) and rescue system (aiming at extinguish the fire) in each phase of a flight. In addition, the SSP-FK system is used on many types of military aircraft (including helicopters from W-3/3W/3WA/3PL and Mi/8/14/17/24 family as well as An-28 and Tu-154M aircraft. The paper presents selected results of work in the Air Force Institute of Technology in the study of SSP-FK fire suppression system (as one of the main protection systems on-board) used on many types of military aircraft operated in the Polish Armed Forces. In determining the conditions of the false signalling of fire, simulation models of action blocks implementing of the SSP-FK fire suppression system were developed. The research on simulation models was performed in Matlab-Simulink and Circuit-Maker computing packages. The results of these works were used to diagnose selected modules and blocks of the SSP-FK system during the study of actual cases of their false activation.
Źródło:
Journal of KONES; 2016, 23, 3; 525-531
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The utilization of acoustic waves in fire suppression and prevention
Autorzy:
Łukasiak, K.
Powiązania:
https://bibliotekanauki.pl/articles/339962.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Zarządzania Produkcją
Tematy:
fire safety
fixed fire suppression systems
acoustic waves
bezpieczeństwo pożarowe
stały system tłumienia pożaru
fale akustyczne
Opis:
The following paper examines the influence of acoustic waves on the behaviour of flames generated by various fuels. For the purposes of this investigation, a number of experiments were carried out using a specially constructed laboratory stand. This stand consisted of an acoustic waves frequency generator, an amplifier, and a low frequency speaker connected to the channel, upon which the waves were transmitted. The flames generated by various fossil fuels: gasoline, diesel oil and natural gas were exposed to the acoustic waves. The results of the experiment identified the critical sound pressure levels needed to extinguish various types of flames. These results may prove to be useful in the future construction of fire prevention systems at industrial facilities.
Źródło:
Zarządzanie Przedsiębiorstwem; 2018, 21, 1; 9-13
1643-4773
Pojawia się w:
Zarządzanie Przedsiębiorstwem
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Spectral Subtraction Based Algorithm for Real-time Noise Cancellation with Application to Gunshot Acoustics
Autorzy:
Ramos, A. L. L.
Holm, S.
Gudvangen, S.
Otterlei, R.
Powiązania:
https://bibliotekanauki.pl/articles/226624.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
gunshot acoustics
noise cancellation
spectral suppression
counter sniper systems
Opis:
This paper introduces an improved spectral subtraction based algorithm for real-time noise cancellation, applied to gunshot acoustical signals. The derivation is based on the fact that, in practice, relatively long periods without gunshot signals occur and the background noise can be modeled as being short-time stationary and uncorrelated to the impulsive gunshot signals. Moreover, gunshot signals, in general, have a spiky autocorrelation while typical vehicle noise, or related, is periodic and exhibits a wider autocorrelation. The Spectral Suppression algorithm is applied using the pre-filtering approach, as opposed to post-filtering which requires a priori knowledge of the direction of arrival of the signals of interest, namely, the Muzzle blast and the Shockwave. The results presented in this work are based on a dataset generated by combining signals from real gunshots and real vehicle noise.
Źródło:
International Journal of Electronics and Telecommunications; 2013, 59, 1; 93-98
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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