Studying the Dynamic Properties of Thermoelectric Fire Detectors in Terms of False Tripping of an Air Fire Suppression System

2019 ◽  
pp. 103-120 ◽  
Author(s):  
A. Szelmanowski ◽  
M. Zieja ◽  
A. Pazur ◽  
K. Głyda
Keyword(s):  
Dynamic Properties ◽  
Fire Suppression ◽  
Suppression System

scholarly journals Dynamic Properties Modeling of the Thermoelectric Fire Sensors in the Aircraft Fire Suppression System

2017 ◽  
Vol 44 (1) ◽  
pp. 293-307
Author(s):  
Andrzej Szelmanowski ◽  
Mariusz Zieja ◽  
Krzysztof Głyda
Keyword(s):  
Air Force ◽  
Dynamic Properties ◽  
Fire Suppression ◽  
Simulation Models ◽  
Ambient Air ◽  
Exhaust Gas ◽  
Heating And Cooling ◽  
Protection Systems ◽  
Institute Of Technology ◽  
Suppression System

Abstract The paper presents selected results of work at the Air Force Institute of Technology (AFIT) in the concerning modeling the dynamic properties of fire detectors used in aviation fire protection systems. In order to determine the conditions of false fire signals, the simulation models of thermoelectric fire detectors have been developed. Simulation models were tested in Matlab-Simulink computational packages for various methods of heating and cooling the sensors (among others, changes in ambient air temperature of the sensor, caused by the EWU exhaust gas diffusers were simulated – these diffusers are used to distribute flue gases from helicopter engines).

A CFD Analysis of the Fire Suppression System Inside an Aircraft Cargo Compartment

2009 ◽  
Author(s):  
Cláudia Andrade ◽  
Edson Zaparoli ◽  
João B. Neves Jr.
Keyword(s):  
Fire Suppression ◽  
Cfd Analysis ◽  
Suppression System

scholarly journals ANALYSIS OF HEAT RELEASE RATE IN ENGINE ROOM FIRES OF 300 GT FERRY RO-RO PASSENGER BY USING WATER MIST SYSTEM AND CO2 SYSTEM

2021 ◽  
Vol 15 (2) ◽  
Author(s):  
Wira Setiawan ◽  
Distyan Kotanjungan
Keyword(s):  
Heat Release ◽  
Heat Release Rate ◽  
Release Rate ◽  
Fire Suppression ◽  
Water Mist ◽  
Engine Room ◽  
Passenger Ships ◽  
Dynamic Simulator ◽  
Fire Dynamic Simulator ◽  
Suppression System

Based on statistical data in recent years, there are still quite a number of ship accidents due to fires, including on passenger ships. The water mist system is a fire suppression system that allows it to be used in the engine room with the advantage that it can keep the heat production rate low during the extinguishing process and can be operated earlier than the CO2 system. The research is conducted by using fire dynamic simulator in the engine room of a 300 GT ferry ro-ro passenger to compare the heat release rate of fire without an extinguishing system, an existing CO2 system, and a water mist system. The result shows that the CO2 fire suppression system reduces the heat release rate more rapidly to the decay phase at 375 seconds while the water mist takes more than 900 seconds. However, the fully developed phase of the water mist suppression system occurs more quickly than CO2 because the sprinklers are activated shortly after a fire occurs. Unlike water mist, the CO2 system is activated at 60 seconds so that the pre-combustion, growth, flashover, and fully developed phases are at the same HRR and time as the natural one.

scholarly journals Reliability study of an emerging fire suppression system

2015 ◽  
Vol 22 (6) ◽  
pp. 10-18 ◽  
Author(s):  
David A. Miller ◽  
Lyric M. Rossati ◽  
Nathan K. Fritz ◽  
Michael E. Cournoyer ◽  
Howard N. Granzow
Keyword(s):  
Fire Suppression ◽  
Reliability Study ◽  
Suppression System
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