Sterling SDAA 25-100 specifications Drying Hopper Air Trap Considerations, Optional Aftercooler

Drying Hopper Air Trap Considerations

Our exclusive air trap assembly on the top of the drying hopper prevents ambient air from contaminating the material being dried. To ensure that your unit will operate at peak efficiency, do the following:

•Keep the material level at the mid point of the air trap

•This can be achieved by utilizing a hopper loader or vacuum conveying system to supply material to the drying system.

Figure 1: Drying Hopper Air Trap

	Flapper Valve
Suggested material level		of the loader
for the optimum		Return air from the
efficiency.		drying hopper.

Air Trap

Insulation

Delivery low dew point, heated air to the drying hopper.

Recommended process

temperature control

thermocouple location.

Optional Aftercooler

Water-cooled 15/30/60 cfm models use a water-to-air heat exchanger as an aftercooler. Cooling water is required for this design (3 gpm at 85°F or lower). Return air from the hopper passes through the air filter to trap fines and dust before entering the heat exchanger.

Installing Water Lines

(Hose and Hose Clamp)

When installing the water lines, ensure that the aftercooler utilizes either tower, chilled or city water as warm as 85°F (29°C). Recommended flow rate is three (3 gpm) gallons per minute (11 liters per minute).

Dehumidifying Dryers Chapter 3: Installation 21 of 59