Trane trg-trc001-en Air Conditioner User Manual


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32 TRG-TRC001-EN
notes
period four
Air Quantity
Plot the outdoor air B (95°F DB, 78°F WB) and indoor air A (78°F DB, 65°F WB)
conditions on the psychrometric chart. Then calculate the mixed-air conditions
using the method learned in Period 2.
Locate the mixed air conditions C on the psychrometric chart (82.25°F DB,
68.6°F WB).
Next, establish the SHR line by aligning the 0.80 mark on the scale with the
index point and drawing a line through both points to the saturation curve. In
this case, the room design conditions and the index point are the same
(A = 78°F DB, 65°F WB).
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Figure 53
95°F0.25× 23.75°F=
78°F0.75× 58.50°F=
Mixed-Air Temperature 23.75°F58.50°F+ 82.25°F==
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