Where:
X = distance to the 5 kilowatt per square meter endpoint (m)
HC = heat of combustion of the flammable liquid (joules/kg)
HV = heat of vaporization of the flammable liquid (joules/kg)
A = pool area (m2)
CP = liquid heat capacity (joules/kg-ºK)
TB = boiling temperature of the liquid (ºK)
TA = ambient temperature (ºK)