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Recent content by nilford

  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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