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  1. nilford

    High Rise chimney effect?

    Go to the ASHRAE Fundamentals, 1997, page 25.8 for the equation that applies. Their example shows 0.16 inches diff S.P. for a 20 storey building, with 45 degrees delta T. I tend to use a bit more and just take it up on good dampers. With openable windows it sounds like you probably will have...

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