Duct Design
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The Continuity Equation and Air Flow
Filters and ducts can work a lot better if HVAC designers and installers understand this simple physics formula
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A Better Name for Friction Rate
Duct design is confusing enough already without having to explain why a higher friction rate is better
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An Easy Retrofit for Return Air
For homes without dedicated return grilles in the bedrooms, this easy-to-install device provides a return air pathway
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The Difficulties of Third-Party HVAC Design
How do we get everyone on the same page?
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The Joy of Flex
A recap of my Building Science Summer Camp presentation
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Using Total Effective Length in Duct Design
For air flow purposes, a duct system is often much longer than it appears
