Technology Masterclass: passive stack ventilation

[@ShubhamSingh-AirCrew]

Excellent presentation.

[@brentfrank7012]

Great video. I’m surprised you didn’t show operable skylights on the roof used as passive ventilation, you barely touched on it. These are very easy to retrofit and can create high velocity ventilation when used correctly with windows below. I’ve seen studies where this design out performed a whole house electric fan. 👍

[@tadecohome8797]

Thank you from Philippines

[@georgen9755]

Why no justice ?

[@sleddy01]

natural ventilation for billionaires

[@anthonyedwards8390]

Johnson does not articulate the different purposes of ventilation: eg remove damp to prevent damage to fabric. Provide right amount, not excessive, vent to remove pollutants. Evaporate moisture from walls, arising from leaks, rising damp and rain with pipe leaks. life-style moisture, breathing, showering, drying clothes, cooking etc. He does not say, in energy retrofit, for all homes in UK, that many million old ex-coal fire homes, with inadequate insulation, from solid brick walls. Old flues are brilliant keeping cooler in summer, and enough vent with hit-or-miss grille for winter. Too much psuedo-science jargon, not talking practically.

[@ABU-lz2sh]

Blabber blabber blabber