Analysis of room overpressure after launching an integrated extinguishing system
The result's identifiers
Result code in 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>
Result on the web
<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>
Alternative languages
Result language
angličtina
Original language name
Analysis of room overpressure after launching an integrated extinguishing system
Original language description
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.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20301 - Mechanical engineering
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Mechanics and Industry
ISSN
2257-7777
e-ISSN
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Volume of the periodical
20
Issue of the periodical within the volume
7
Country of publishing house
FR - FRANCE
Number of pages
9
Pages from-to
"NESTRÁNKOVÁNO"
UT code for WoS article
000521731900006
EID of the result in the Scopus database
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