Registered: 1352930725 Posts: 125
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More heat storage than solar, but I thought some might find it interesting. Sundug 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 furnace. http://www.resilience.org/stories/2017-03-22/heat-storage-hypocausts-air-heating-middle-ages/ __________________ Go Solar!
Registered: 1388591029 Posts: 2,881
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It IS interesting! Thanks for sharing. And yes it's very similar to today's hydronic floors.
__________________ Solar is like the wind. It may be free, but putting it to work isn't! Willie, Tampa Bay