I'm currently daydreaming about a radiant heater that is made of the
same clay used by tandoor ovens and uses ignited bituminous coal as a
source of heat. Has such a heater ever been built in the history of
I think this radiant heater would be pretty and would smell good. I
love the smell of clay and bituminous coals.
When I think of radiant heat I think not only of the heat itself but
also the visual beauty of the part of the device emitting the thermal
It would be even prettier if this tandoor bituminous coal radiant
heater is shaped like a pyramid.
The red hot bituminous coals emit hot volatiles that heat the clay.
The causes the clay to emit infrared radiation. Within this heater
there is just enough oxygen for the coals to glow red hot and self-
sustain this combustion. The oxygen content is insufficient to make
the coals emit flames.
Once again, the purpose of this hypothetical radiant heater is not
just warmth but also to please the eyes and nose.