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TRG-TRC001-EN 17
period one
The Psychrometric Chart
notes
Put all of these changes together on one chart and they show the direction the
air condition will move when the dry-bulb temperature or moisture content is
altered.
In actual practice, however, both the dry-bulb temperature and moisture
content of the air generally change simultaneously. When this happens, the
resulting air conditions move from A at some angle. The exact angle and
direction depend upon the proportions of sensible and latent heat added or
removed. Sensible heat causes a change in the air’s dry-bulb temperature
with no change in moisture content. Latent heat causes a change in the air’s
moisture content with no change in dry-bulb temperature.
To provide summer comfort, air is cooled and dehumidified, moving the air
condition downward and to the left, resulting in a lower dry-bulb temperature
and a lower moisture content.
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Figure 29
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Figure 30