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TRG-TRC001-EN 21
period two
Air Mixtures
notes
Returning to the psychrometric chart, point C, at which the 83.75°F dry-bulb
temperature falls on the line from A to B, represents the conditions of the air
mixture: 83.75°F DB and approximately 70°F WB.
Because the recirculated air quantity constitutes a larger percentage (75%) of
the mixture, the mixed-air condition (C) is much nearer to the indoor design
condition (A) than to the outdoor design condition (B).
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Figure 36