1–2
Let’s say that you want to dry the air in a storage room, using the HC-150. Damp “pro-
cess” air is pulled into the unit from the storage room. The desiccant in the Honey-
Combe
®
wheel picks up most of the moisture in the air. Once it has been “dried out,” the
process air is vented back into the storage room. At this point, the moisture has been
taken out of the process air, and “stored” in the HoneyCombe
®
wheel.
The next job is to move this moisture out of the wheel. As we said, the desiccant will
give up moisture when it is heated. When it is heated, and the moisture released, we
say it is “reactivated.” In the HC-150, a stream of “reactivation” air is taken from outside
the controlled space and heated using an electric heater. This heated air is forced
through the channels in the HoneyCombe
®
wheel. The desiccant releases the moisture
into the heated air stream. Finally, the damp reactivation air is vented outside. At this
point, the moisture has been moved from the storage room to the wheel, then from the
wheel into the outside air. The process is complete.
You may have noticed that, at one moment, we’re using the wheel to pick up moisture,
and a moment later, we’re heating the wheel to drive off the moisture. In the HC-150,
both actions are happening at the same time, on different sections of the wheel.
1.2 ABOUT THE HC-150
This is a simplified explanation of the operating principle. Figure 1–2 shows how we put
this principle to work in the HC-150. You can still see the parts we discussed in the last
FIGURE 1–2
HC-150 IN OPERATION
Desiccant wheel
Heater
Filter
Process
air outlet
(dry air)
Blower
Drive
Motor
Process air inlet
(moist)
Reactivation
Blower
Reactivation
air outlet
(moist)
Temperature
sensor
TS02
Reactivation
sector of wheel
Process air
damper
J141.1
Process
sector of wheel
Filter
Overheating
sensor
TS01
Reactivation air
temperature sensor
TSE1
Overheat
anticipator
(TS03)
HC-150I only
To Next Page
Loading...
Need help?
General
