A

ground area (m2)

ϑmax

maximum temperature (˚C)

Hc

heat of combustion (kJ/kg)

ϑmid,0.7

average mean temperature in a height of 0.7 above floor (˚C)

M

weight (kg)

Greek

Q

fire load (MJ/m2)

χ

combustion efficiency

Q''

fire load density (MJ/m2)

subscripts

ϑ

temperature (˚C)

i

particular species