Analysis of room overpressure after launching an integrated extinguishing system
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F19%3A43958780" target="_blank" >RIV/49777513:23640/19:43958780 - isvavai.cz</a>
Výsledek na webu
<a href="https://doi.org/10.1051/meca/2019079" target="_blank" >https://doi.org/10.1051/meca/2019079</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/meca/2019079" target="_blank" >10.1051/meca/2019079</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Analysis of room overpressure after launching an integrated extinguishing system
Popis výsledku v původním jazyce
The throttling of liquefied substances from high pressure vessels to an enclosed volume starting at atmospheric pressure is described in order to determine the thermodynamic state of gaseous contents of the extinguished room. A time dependent, 0D mathematical model is implemented describing the state inside the agent container, the isenthalpic throttling in the distribution system, agent vaporization and mixing with air. The agent is modelled as real gas, and solid–vapour two phase behaviour is approximated. Other influences on the process including the heat transfer from selected solid parts inside the room and the gas mixture leakage out of the room are taken into account. The main outcome is an MS Excel tool for the design optimization of integrated fire extinguishers. The optimization balances two contradictory requirements: volumetric concentration of the agent to sustain the fire extinguishing capabilities, and tolerable room overpressure. Agent fill weight and discharge time are adjusted. The discharge time is controlled by the distribution piping and design of the spray nozzles. System operation is checked with regards to various initial and boundary conditions.
Název v anglickém jazyce
Analysis of room overpressure after launching an integrated extinguishing system
Popis výsledku anglicky
The throttling of liquefied substances from high pressure vessels to an enclosed volume starting at atmospheric pressure is described in order to determine the thermodynamic state of gaseous contents of the extinguished room. A time dependent, 0D mathematical model is implemented describing the state inside the agent container, the isenthalpic throttling in the distribution system, agent vaporization and mixing with air. The agent is modelled as real gas, and solid–vapour two phase behaviour is approximated. Other influences on the process including the heat transfer from selected solid parts inside the room and the gas mixture leakage out of the room are taken into account. The main outcome is an MS Excel tool for the design optimization of integrated fire extinguishers. The optimization balances two contradictory requirements: volumetric concentration of the agent to sustain the fire extinguishing capabilities, and tolerable room overpressure. Agent fill weight and discharge time are adjusted. The discharge time is controlled by the distribution piping and design of the spray nozzles. System operation is checked with regards to various initial and boundary conditions.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
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OECD FORD obor
20301 - Mechanical engineering
Návaznosti výsledku
Projekt
—
Návaznosti
S - Specificky vyzkum na vysokych skolach
Ostatní
Rok uplatnění
2019
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Mechanics and Industry
ISSN
2257-7777
e-ISSN
—
Svazek periodika
20
Číslo periodika v rámci svazku
7
Stát vydavatele periodika
FR - Francouzská republika
Počet stran výsledku
9
Strana od-do
"NESTRÁNKOVÁNO"
Kód UT WoS článku
000521731900006
EID výsledku v databázi Scopus
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