Extinguissen

Extinguissen is a term used in combustion science to describe a deliberate cessation of flame propagation through controlled cooling and dilution of reacting species. In this concept, extinction is achieved when heat release rate falls below the rate required to sustain the flame, typically by rapid cooling, reduction of oxidizer or fuel concentration, or a combination of both.

Mechanism of extinguissen can involve quenching with water sprays, inert gas injection, or rapid throttling of fuel supply. The effectiveness depends on flame type (premixed versus non-premixed), geometry, and ambient pressure. In laminar flames, extinction occurs when the temperature and local equivalence ratio move outside flammability limits. In turbulent flames, extinction occurs at critical strain rates and flame stretch that disrupts the flame front and halts propagation.

Applications of extinguissen are mostly found in theoretical studies, safety training simulations, and the design of controlled quenching systems in microreactors and fire safety engineering. It provides a framework for comparing non-mechanical flame cessation with conventional fire suppression methods such as sprinklers, dampers, and chemical extinguishing agents.

Limitations and considerations: real fires exhibit complexities such as radiant heat feedback, soot formation, and potential re-ignition, which can complicate the practical implementation of extinguissen. Consequently, extinguissen is typically considered as one component of a broader, multi-strategy suppression plan.

Origin and usage: extinguissen is a neologism in combustion literature, used primarily in academic discussions to emphasize non-mechanical routes to flame extinction. It is not a universally standardized term across all regions.