stack effect

Elevator Shaft Vents Blamed for Big Energy Losses

Posted on April 18,2015 by ScottG in air leakage

A typical apartment building in New York City loses thousands of dollars worth of energy every year from leaky elevator shafts that vent warm air at the top of the building and draw in cold air at the bottom, according to a new report from the city's U.S. Green Building Council chapter.

Heat Loss from Air Is No Big Deal, Right?

Posted on April 18,2015 by user-1048334 in air barrier

No, it’s a huge deal. The photo (right) is of air streaming through recessed lights in a cathedral ceiling. I often and exhaustively speak about air sealing as if it were a universal good. And it is, right up there with brown ale and Avengers movies. My audit customers often look confused when I address their insulation questions by bringing up air barriers and air leakage. I mean, “Why are you talking about air leaks when I asked about the insulation?”

Who Knew the Stack Effect Could Be So Controversial?

Posted on April 18,2015 by ab3 in air leakage

Recently, I wrote a little article about the stack effect to explain that the flow of air and heat is upward in winter but downward in summer. Turns out, the stack effect is a hot topic. That article has gotten 25 comments so far. When I posted it to the RESNET BPI group on LinkedIn, it got another 22 comments.

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