Trane trg-trc001-en Air Conditioner User Manual


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2 TRG-TRC001-EN
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period one
The Psychrometric Chart
Properties of Air
At first glance, the psychrometric chart appears to be an imposing network of
lines. When properly used, however, it provides valuable information about the
properties of air. During this session, the psychrometric chart and its use in
solving many air conditioning problems will be explained.
The psychrometric chart contains five physical properties to describe the
characteristics of air:
■ Dry-bulb temperature
■ Wet-bulb temperature
■ Dew-point temperature
■ Relative humidity
■ Humidity ratio
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