There are almost as many different types of
evaporators as there are applications. However,
evaporators are divided into two general groups.
The first group has evaporators that cool air that,
in turn, cools the product. The second group has
evaporators that cool a liquid such as brine
solution that, in turn, cools the product. Normally,
the proper evaporator comes with the unit (system)
that you will be installing. However, there may be
an occasion when you are designing a system. At
this time, you will need to determine the
Figure 14-12.Blower-type evaporator.
Figure 14-13.(A) Forced circulation evaporator
partially installed; (B) fan unit removed.
requirements and select the proper evaporator
from a manufacturers catalog or manual. In figure
14-12 a blower-type evaporator is shown in a small
space. The air enters the bottom of the evaporator,
is cooled, and exits at the front of the unit. In
figure 14-13, view A, a forced circulation
evaporator is shown partially installed; view B
shows the unit with the fan removed. A compact
blower evaporator for use in low headroom fixtures
is shown in figure 14-14. A vertical, flat-type
blower evaporator designed for mounting behind
either a window or a door frame is shown in figure
14-15. In the evaporator
Figure 14-14.Compact blower evaporator.
Figure14-15.Vertical, flat-type blower