Extinguishing efficiency of mixtures of pentafluorobutane with short-lived gas extinguishing agents
Bibliographic record
Abstract
Показана необходимость снижения эмиссии в атмосферу газовых огнетушащих веществ (ГОТВ), обладающих большим потенциалом глобального потепления. Описан возможный способ сокращения объема применения парниковых газов путем создания смесевых газовых огнетушащих веществ, один компонент которых быстрее распадается в пламени, ускоряя деструкцию второго, более прочного химического соединения, тем самым улучшая ингибирующий эффект. Приведены экспериментальные данные, подтверждающие результативность предложенного способа повышения огнетушащей эффективности смесевых ГОТВ. The article describes a possible way to increase the efficiency of gas extinguishing agents by creating mixed compositions. It consists of six parts including an introduction, a section dedicated to the acceleration of destruction, a description of experimental equipment, results and discussion, conclusions and references. The paper analyzes the situation in the field of gas fire extinguishing in the Russian Federation in connection with the ratification of the Kigali Amendment to the Montreal Protocol. Possible solutions to reduce the emission of greenhouse extinguishing gases are given. There is described a method for accelerating the destruction of gas extinguishing agents in a flame by creating a mixed composition, one component of which decays faster in the flame, accelerating the decay of another more chemically durable substance, thereby increasing the inhibitory effect. A series of experiments was carried out on an experimental installation designed to determine the minimum extinguishing concentration to identify the positive effect of the decay of pentafluorobutane on the destruction of perfluoroethyl isopropyl ketone and perfluoroisohexene compounds. The positive effect of accelerating the decay of perfluoroethyl isopropyl ketone due to additional heat release during the transformation of СFH into a flame on its extinguishing efficiency has been proved. When pentafluorobutane is added to perfluoro-2-methylpentene-2 or perfluoro-1,2-dimethylcyclobutane their extinguishing efficiency does not improve: the possible positive effect of accelerating the decay of compounds with the general formula CF in the flame in the presence of an additive СFH is offset by heat release during its oxidation.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".