Thermal mass, thermal bank, underground thermal energy storage, passive solar home

Thermal mass, thermal bank, underground thermal energy storage, passive solar home

In this video I show how we triple chimney attached to a wood-burning stove is used to store energy in an underground thermal mass storage unit. When we designed and built our salt box, post and beam, passive solar home in the early 80s we design and build a heat capturing, countercurrent triple chimney system attached to our wood-burning stove that directed the excess heat that would accumulate near the peak of our and conducted efficiently down into an underground thermal energy storage unit. The thermal mass unit has to steal plenums at both ends of the unit and a stainless steel mesh to keep the washed stones contained within the thermal mass unit. A concrete floor was poured over the thermal mass unit and covered with floor tile. Pipes and floor grates bring the conditioned air out of the thermal mass unit and up into the rooms in an open-envelope. At the base of the chimneys there is an air filter and an attic fan that conducts the heat charge air from the peak, down through the chimneys, and into the thermal mass unit.

Other important notes regarding the design include super-insulated fully enveloped skin of the house, most windows face south for maximal solar gain during the winter months and there's a 2 foot overhang shading this second-story windows during the warm summer months.

Thanks for watching, Feel free to comment and ask questions and please share the video with your friends and colleagues.

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