Liquefied extinguishing agent discharge to an overpressure-sensitive enclosed volume

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F18%3A43953555" target="_blank" >RIV/49777513:23640/18:43953555 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1051/matecconf/201816807010" target="_blank" >http://dx.doi.org/10.1051/matecconf/201816807010</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/matecconf/201816807010" target="_blank" >10.1051/matecconf/201816807010</a>

Result language
angličtina
Original language name
Liquefied extinguishing agent discharge to an overpressure-sensitive enclosed volume
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 thermodynamic state of the extinguished room gaseous contents. 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. 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. Main outcome is an MS Excel tool for integrated ﬁre extinguishers design optimization. The optimization balances the two contradictory requirements: Agent volumetric concentration to sustain the ﬁre extinguishing capabilities and tolerable room overpressure. Agent ﬁll weight and discharge time are being adjusted. The discharge time is controlled by the distribution piping and spray nozzles design. System operation is checked concerning various initial and boundary conditions.
Czech name
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Czech description
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Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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