Embers (burning)

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Charcoal embers

Glow or glow refers to the reaction or temperature area of a solid substance with visible heat radiation. It often arises from the combustion of a fuel consisting largely of carbon or metals (substances of fire classes A and D) without visible flame formation , but with the emission of light with a high infrared component . Coal usually burns in this form, and when wood is burned, embers are usually formed. These substances can also burn in the form of dust (dust fire). Embers occur when no gaseous substances that would allow a flame to escape from the fuel. In the combustion of organic substances such as wood, it occurs when it is degassed.

Embers can pose a considerable fire hazard, as they sustain the combustion process and the associated continuous heat emission for a long time. In the case of large and forest fires, a fire watch is therefore often set up for several days to prevent embers from flaring up again.

Embers, on the other hand, play a useful role in grilling or campfires , as the lack of an open flame prevents the food from burning on the surface, for example. Due to the infrared radiation, glowing coals generate a pleasant warmth even at a considerable distance.

With the help of thermal imaging cameras , embers are searched for
Embers by a wood fire

Extinguishing an ember fire

Burning embers (Glutbrand) can hardly be by pure oxygen deprivation delete because by the typically high material density , the ignition temperature remains relatively long. Therefore, the embers must be additionally cooled and the heat necessary for the continuation of the combustion must be withdrawn.

A glowing fire is extinguished with ABC extinguishing powders, in particular by melting extinguishing powder and a layer of glaze that appears afterwards. The glaze layer prevents the entry of oxygen and at the same time insulates against radiant heat.

Embers of solid substances are extinguished with hand-held fire extinguishers with extinguishing effect for fire class A or (in the case of metal fires) for fire class D.

See also

Web links

Commons : Embers  - collection of images, videos and audio files

Individual evidence

  1. ↑ a b Practical manual for operational fire protection . 2004, ISBN 3-8111-4471-5 ( limited preview in Google Book Search).
  2. ↑ a b c Henry Portz: Fire and Explosion Protection from AZ Explanation of terms and fire protection characteristics . Springer-Verlag, 2015, ISBN 978-3-322-80197-5 , pp. 79 ( limited preview in Google Book search).
  3. ↑ Max Friedrich: Investigations into the behavior and mode of action of various dry extinguishing agents . Springer-Verlag, 2013, ISBN 978-3-663-07433-5 , pp. 16 ( limited preview in Google Book search).
  4. ↑ Hans Kemper: Burning and extinguishing (fire brigade expertise) . ecomed-Storck GmbH, 2016, ISBN 978-3-609-69585-3 , p. 13 ( limited preview in Google Book search).
  5. ^ Jan Grübler, Horst Howorka, Matthias Lammel, Holger Roll, Michael Soiné, Wiebke Steffen, Alfred Stümper: Kriminalistik-Lexikon . CF Müller GmbH, 2013, ISBN 978-3-7832-0804-7 , p. 261 ( limited preview in Google Book search).
  6. ↑ Jörg Müssig, Thomas Ruppel, Barbara Timm: Who is liable when what happens? ecomed-Storck GmbH, 2017, ISBN 978-3-609-69618-8 , p. 63 ( limited preview in Google Book search).
  7. ↑ Wilfried Schober: The Bavarian fire brigade law in practice . Hüthig Jehle Rehm, 2014, ISBN 978-3-7825-0576-5 , pp. 53 ( limited preview in Google Book search).