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In this video, I go through how we initiate the DOAS Dehumidification Sequence and walk the dehumidification process on the psychrometric chart. We also discuss make-up air unit cooling and heating sequences.
These slides were taken from my webinar called Psychrometrics Beyond The Basics where we cover Air Mixing, Calculating SHR, Constant Volume Psychrometrics, Full and Part Load Psychrometrics.
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The Psychrometric Chart used here is in Normal Temperature, I-P Units at Sea Level with How to Use A Psychrometric Chart Instructions on Back. Also Shown on This Psych Cart: Sensible Heat Ratio Qs/Qt, Saturation Temperature Curve, Cubic Volume of Air. Dry Bulb Temperature Range of -10F to 130F, Dew Point Temperature Range From -10F to 90F, Humidify Ratio Range 0-200 Grains, Wet Bulb Temperature Range -10F to 90F. Examples on back showing the psychrometric process cooling and dehumidification.