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  últim editat: Sat, 05 May 2018 23:29:11 +0300  
Hypocaustum is a way to transfer heat from a (usually external or underground) stove to the inside of a building, using the mass of the (mostly ground) floor and walls as an accumulation and a system of air chambers and ducts as the transfer medium.
The article describes Roman and medieval implementations and shows transition from hypocaustum to standalone stoves. There are some numbers, derived from an experiment use of hypocaustum in medieval castle in Malbork, Poland.

LOW-TECH MAGAZINELOW-TECH MAGAZINE va escriure el següent entrada Tue, 07 Mar 2017 16:25:13 +0200
Heat Storage Hypocausts: Air Heating in the Middle Ages
Hot air vents in the floor of the Maulbronn monastery. Source: "Das Kloster Maulbronn. Geschichte und Baugeschichte.", Ulrick Knapp, 1997 / Via Spiegel 2016. The Romans are credited with the invention of the first smoke-free heating system in Western Europe: the hypocaust. Until recently, historians had assumed that its technology was largely lost after the collapse of the Roman Empire. In fact, however, it lived on in large parts of Europe, and was further developed into the “heat storage hypocaust”, an underground furnace on top of which granite stones would be piled, to then release hot air through vents in the floor. By this means, a room could be kept warm for days with just one firing of the hypocaust's...
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#Energy #Building #Heating #Construction #Stoves #Hypocaustum #Roman #Medieval