How a Solar Chimney Cools Your House (And Where It Fails)

A solar chimney has no fan, no compressor, and no power bill. It moves air through a house using nothing but sunlight and the height of the shaft. The physics is real and it's been working for 3,400 years. But most people who try building one end up with a warm glass box on their roof, and the reason comes down to two numbers nobody in the passive cooling space ever shows you. This video covers the stack effect equation in plain English, the two variables that decide whether a solar chimney produces real airflow or barely a breeze, measured flow rates from peer-reviewed research, what happens on an overcast day, and the honest cost math for a US residential retrofit. Including where it stops working. If this kind of building physics breakdown is useful to you, subscribe for more:    / @themeasuredhouseyt   Your host is Ray Tolliver. Thirty years in institutional mechanical plant. Not licensed, not a contractor, not offering advice. Just the physics, shown properly. SOURCES CITED IN THIS VIDEO: Bansal, Mathur, and Bhandari (1993), Building and Environment Kaneko et al., prototype solar chimney field measurements Bassiouny and Koura (2008), air gap width and airflow rate ASHRAE Handbook of Fundamentals, stack effect equation US Energy Information Administration, residential AC spending BedZED Trust, Beddington Zero Energy Development documentation