(a) A 50mm thick carpet made of polypropylene is burning in front of the doorway to a room that is on fire. If the carpe

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(a) A 50mm thick carpet made of polypropylene is burning in
front of the doorway to a room that is on fire. If the carpet is
receiving 12kW/m2 in the form of radiant heat from the room, would
the carpet continue to burn if the door was closed (no
radiation)?
 20% of the heat energy released by burning is transferred back
to the carpet by radiation;
 The carpet is losing heat only due to radiation and steady
state conduction between the carpet surface and the floor beneath
it.
 The carpet is a black-body radiator with a black-body
temperature of 650C
 The temperature at the floor beneath the carpet is 30C
 Thermal conductivity co-efficient of the carpet material is
0.18 W/m.K
.  Lv for carpet is 1.8 MJ/kg
 Critical mass flux is 0.015 kg m-2s-1