File:Fse-smouldering-v2.svg

Fse-smouldering-v2.svg (SVG file, nominally 900 × 600 pixels, file size: 8 KB)

Summary

Fuel-bed thickness affects the heat balance for sustained smouldering. Based on Ohlemiller (2002), pp. 2-201–2-205.

Diagram for the article Smouldering (Fire Safety Academy wiki, level 1 Basic).

Source basis: Ohlemiller (2002), pp. 2-201–2-205
Alt text: Thin layer losing heat and thick layer retaining heat around a slow reaction zone.

New drawing by Fire Safety Academy. © Fire Safety Academy.

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	Date/Time	Dimensions	User	Comment
current	15:47, 2 November 2026	900 × 600 (8 KB)	Sanne (talk \| contribs)	Watermark: Fire Safety Academy logo icon, 70 px, 45 % opacity
	08:50, 2 November 2026	900 × 600 (8 KB)	Sanne (talk \| contribs)	Add modest Fire Safety Academy logo-icon watermark
	07:23, 2 November 2026	900 × 600 (5 KB)	Sanne (talk \| contribs)	Upload fse-smouldering-v2.svg: diagram for Smouldering (level-1 visual plan V2)

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Short title	Thin layer losing heat and thick layer retaining heat around a slow reaction zone.
Image title	Left: a thin porous fuel layer on a floor; oxygen reaches it easily, but heat leaves the small reaction zone through the top and bottom faster than it is generated, so the zone fades. Right: a thick porous layer; oxygen diffuses slowly through the bed to a deep reaction zone, while most heat stays within the layer, so the glowing zone persists. No critical thickness value is given.
Width	900
Height	600