For the room described in Question $4,$ a skylight of $3$ m$2$ is added in the ceiling and the window

opening is $0\mathrm{.}5$ m above the finished floor. The fuel in the room is wood which has $12\%$ moisture.

Assuming a fuel energy density of $900$ MJ$/$m$2$ and the calorific value of dry wood to be $19$ MJ$/$kg

with wood. Compute the following:

$($a$)$ Post flashover ventilation$-$controlled heat release rate $($HRR$)$ using Kawagoe$$s and Law$$s

approaches.

$($b$)$ Burning duration

$($c$)$ Maximum room temperature using Law$$s approach and Swedish curves