Engineering Fundamentals: Part 4
481
Figure 19.8
Evaporative cooling.
for accurate temperature control. The more common humidification
process involves the use of steam or sometimes a heated evaporative
pan (see the discussion in Sec. 10.19). Humidification by means of
steam humidifier is shown in Fig. 19.9 as a straight line sloping up-
ward (increasing humidity ratio) and to the right (heat added by
steam). The slope of the line can be calculated from the masses of the
airstream and the added water vapor together with their heat con-
tents, as shown in the examples in Secs. 10.19.2 and 10.19.3.
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