辐射通量(kw/m2) heat flux (kw/m2)
单位面积的入射热,包括辐射热通量和对流热通量。
Heat flux(kw/m2) heat flux (kw/m2)
Amount of thermal energy emitted, transmitted or received per unit area and unit time.
熄灭时的临界辐射通量(CHF) critical heat flux at extinguishment (CHF)
样品表面火焰停止传播并熄灭的位置所对应的辐射通量(kw/m2)。
critical heat flux at extinguishment (CHF)
Incident heat flux, in kw/m2, at the surface of a specimen at the point where the flame ceases to advance and may subsequently go out.
X分钟的辐射通量(HF-X) heat flux at X min (HF-X)
试验开始x分外时，样品上火焰传播最远距离处抽对应的辐射通量(kw/m2)。
heat flux at X min (HF-X)
heat flux, in kw/m2, received by the specimen at the most distant spread of flame position observed during the first X min of the test.
临界辐射通量 critical heat flux
火焰熄灭处的辐射通量(CHF)或试验30min时火焰传播到的最远位置处对应的辐射通量(HF-30)，两者中的最低值（即火焰30min内传播的最远距离处所对应的辐射通量）。
critical heat flux
heat flux at which the flame extinguishes(CHF) or the heat flux after the test period of 30min(HF-30),whichever is the lower value(i.e. the flux corresponding to the futhest extent of spread of flame within 30min.)
EN ISO 9239-1:2010 Reaction to fire tests for flooring-Part 1: Determination of the burning behaviour using a radiant heat source. EN ISO 9239-1:2010 supersedes EN ISO 9239-1:2002.
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