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In 1972, Heskestad proposed the following formula to calculate how fires grow:
Q = .tn
Q is the rate of heat release (kW)
. is the fire intensity coefficient (kW/sn)
t is time (sec)
n is 1, 2, 3
For most flaming fires except flammable liquids and a few others, n = 2.
When n = 2, this is called the T-squared growth rate.
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