Sterling SDA 1000-5100 specifications Options, Closed-Loop Regeneration, Process Aftercooler

2-5 Options

Closed-Loop Regeneration

An optional regeneration closed-loop valve and heat exchanger can be used to close the regeneration loop during the cooling portion of the regeneration cycle. If this option is enabled on the dryer, air will be bled to the atmosphere until the heating portion of the regeneration cycle is finished. Then, the regeneration closed loop valve will direct air through a water-cooled heat exchanger and back into the regeneration loop (see Figure 3 and Section 3-6: Connecting Aftercooler/Precooler Cooling Water).

	Figure 3: Closed Loop Regeneration
	Regeneration		Regeneration
	Blower		Blower
AD600-AD1500		AD600-AD1500
Dryer Flow Schematic	Dryer Valve	Dryer Flow Schematic	Dryer Valve
Regeneration Closed Loop	Regeneration	Regeneration Heating is
Cooling is Activated		Activated
	Filter		Regeneration
			Filter
	Optional		Optional
	Regeneration		Regeneration
Regeneration	Closed Loop	Regeneration	Closed Loop
	Cooler		Cooler
Heaters		Heaters
	Regenerarion		Regeneration
	Exhaust
			Exhaust
	Optional		Optional
	Regeneration		Regeneration
	Closed Loop		Closed Loop
	Valve		Valve
Left Desiccant		Left Desiccant

Process Aftercooler

The optional aftercooler cools the moist air returning to the dryer from the drying hopper. The aftercooler can cool the return air from 250ºF to about 150ºF. This maintains the dryer’s efficiency and condenses the unwanted plasticizer from the air stream. The aftercooler requires a cooling water connection (see Figure 4).

Figure 4: Process Aftercooler

Mounting

Brackets

High	Mounting Brackets
Temperature
Gasket
	Cooling Coil

		Cooling Coil	Stainless Steel Cooler
		Pipe Gasket
			Housing
Stainless Steel
Cooler Housing			High
Cooling Coil			Temperature
			Gasket
Cooling Coil	Cooling Coil		Cooling Coil
Cover Plate			Cover Plate
	Pipe Gasket

Large Dehumidifying Dryers Functional Description 17