5 maio 8 ano antes da era comum - Invention of heating system

Descrição:

Invention of heating system known as the hypocaust used in villas spread to most public baths. A hypocaust (Latin: hypocaustum) is a system of central heating in a building that produces and circulates hot air below the floor of a room, and may also warm the walls with a series of pipes through which the hot air passes. This air can warm the upper floors as well.

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