Psychometric process.

Psychometric process.



1. Sub cooling

2. Sub heating

3. Humidification

4. Dehumidification

5. Cooling and humidification

6. Cooling and dehumidification

7. Heating and humidification

8. Heating and dehumidification

Now we will discuss one by one about psychometric process.

1. Sub cooling 

When warm wet air is cooled as it passes
over a cooling coil, the temperature begins to
decrease. If the air leaves the coil at a
temperature above its dew point temperature,
then no condensation occurs
Since the humidity ratio remains unchanged, and
so we use a horizontal line on the psychrometric
chart to represent this process. 




2. Sub heating

The process of sensible heating is represented on
the psychrometric chart by straight horizontal lines
parallel to the abscissa. Since the humidity ratio remains unchanged, and so
we use a horizontal line on the psychrometric chart
to represent this process. Heating will result in lower
relative humidity.





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