Roman heating worked like this: hot gases were vented into cavities in
the walls and floor, heating the dwelling, only then leaving through a
chimney out of the house. But this system consisted of fireclay bricks,
found by archaeologists.
The problem is that fireclay bricks are fired at temperatures of 1.300-1.500 ° C in rotary kilns.
No
idea, how could an ancient Roman get it, if firewood produces a maximum
of 900°C, and coal - 1,200°C?
Not enough temperature! And it became
possible to get this kind of temperature closer to the 15th century.
The
Romans just didn't know they didn't have the right technology. Or the
dating is wrong by a thousand and a half year
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