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Sergio Moran Basic Refrigerant Circuit Course May 18, 2022, 11:33 am
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What is Fenestration and Why Do I Care?
Fenestration is a fancy architectural term that means “openings in the outside of the building.” You will see this word a lot when you read ACCA manual J or when you are doing a manual J load calculation. Fenestration loads include heat losses and gain through windows, doors, skylights, etc., and they can make up […]Read more
Heat Doesn't Rise
We've all heard some version of the phrase “heat rises,” but is that really true? First, we need to remember that heat is energy, not matter. Heat is a force, not a thing. So, while heat may result in changes to matter (stuff) it, isn't matter itself. When we add heat to stuff, the molecules […]Read more
Condensation - It Isn't Where Hot Meets Cold
Photo by Stephen Rardon I hear it all the time. Someone will talk about undesired condensation on an air handler cabinet, on a supply air duct, in a ventilation duct, or on a vent like the one above. In reply, someone will inevitably say, “Condensation occurs where hot meets cold.” Early on in my career, […]Read more