Growing up as a military brat, you learn to adapt quickly—new schools, new bases, new climates. One year it’s triple-digit summer in Texas, then next it’s German winters inspiring you to explore and find your true self. The amazing outcome with that change of climate was it came with the Bavarian Alps. More on that another day.
I remember the first time I heard the term “thermal envelope.” I was in training to become a Building Analyst Professional, trying to act like I understood all the lingo. But in my head? I was thinking of the yellow envelope my report cards came in every quarter—the one my parents opened with the same intensity they used for briefing papers. 😀 Once opened, I knew thermodynamics was coming into play and I for sure would be in hot water.
Turns out, in the building science world, a thermal envelope isn’t full of grades and disappointment—it’s the boundary that separates inside from outside. It’s what keeps your warm air in during the winter, and the summer heat out. Insulation, air sealing, windows, doors—all part of it. There's a little more to the technical side, but we'll just keep it simple for now.
I'll leave you with a bit more humor on Fun Day Friday:
For those that were a fan of The Simpsons. In one episode, after Lisa constructs a perpetual motion machine whose energy increases with time, Homer scolds Lisa with:
"In this house, we obey the laws of thermodynamics!"
Have a fun Friday, and an even better weekend!
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