THE
PROCESS (D
RYING) C
YCLE
The process blower pulls moist air from the top of the drying hop-
per. The air passes through the process filter (and optional aftercool-
er, if installed) into the wheel, where moisture is removed. The dry
air is delivered to the hopper (after it passes through the optional
precooler, if installed) where a spreader cone evenly distributes the
air through the material.
How It Works
The W dryer achieves continuous, closed loop drying by passing air simultaneous-
ly through two heaters and a continuously rotating desiccant wheel.
THE PROCESS (DRYING) CYCLE
The process blower pulls moist air from the top of the drying hopper. The air pass-
es through the process filter (and optional aftercooler, if installed) into the desic-
cant wheel, where moisture is removed. The now dry air moves through the
optional precooler (if installed) and process heater, where it is heated to the drying
temperature selected by the operator. The hot, dry air is delivered to the hopper
where a spreader cone evenly distributes the air through the material.
The Cooling Cycle
Regenerated desiccant must be cooled before it rotates back into the process cycle.
The process blower pushes a small amount of air through the cooling section of the
desiccant wheel. The cooling air then passes through the optional aftercooler, if
installed, and repeats the circuit.
The Regeneration Cycle
The regeneration blower pulls air through the regeneration filter into the dryer’s
regeneration heater. The air is heated to 350° F {177° C} before it is pushed into
the “wet” section of the wheel. The hot air purges moisture from the desiccant. The
moist air is blown out the exhaust at the back of the dryer.
2-4 l Description
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