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Originally Posted by pdf27
What the blower is doing in that company's diagram is using some air to cool water by evaporative cooling. This cooled water is then used to cool the remaining air, which is then blown into the house. The reason that the air being blown into the house is of low humidity is that the cooler isn't adding any extra water to the air being blown into the house - the humid air is all dumped to atmosphere. The part of the system which cools the water is basically identical to a standard bong.
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Actually, the air is pulled in and some diverts
through the heat exchanger-cooling it. Some air that is
not diverted is pulled up and
across the heatexchanger. That is the indirect cooling.
The air then strikes a wetted mat as it leaves the unit. This is the direct cooling phase.
