Psychrometrics and The Magic Line 3D
April 26, 2026
We trace the history of psychrometrics from wet-bulb thermometers to Willis Carrier’s legendary 1911 paper, then walk through the 3D relationships between dry bulb temperature, humidity ratio, enthalpy, and the dew point — that magic line where vapor becomes liquid and surfaces start sweating.
Whether you’re troubleshooting a clammy house, a dripping air handler, or trying to understand why your supply air leaves at 90% RH, this episode connects the dots between the math and the real world.
Apps do the math. The chart gives you the soul behind it.
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