Difference between revisions of "Regenerative Desiccant Dryers"

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[[File:Regenerative_Desiccant_Dryers.jpg|thumb|200px|right|Regenerative Desiccant Dryers]]
[[File:Regenerative_Desiccant_Dryer_Principle.jpg|thumb|200px|right|Regenerative Desiccant Dryer Principle]]
The '''Regenerative Desiccant Dryers''' are used for drying air in storage tanks  or pneumatic systems and are beneficial in the drying of hygroscopic  (water-absorbing) resins. These dryers remove water from the air by  passing it through a desiccant that absorbs moisture.
 
==Features==
The Regenerative Desiccant Dryers consist mainly of two cylinders containing desiccant, connected by a valve system.
 
 
==Operation==
When  the desiccant in the first cylinder is saturated, the air flow can be  switched to the cylinder containing the dried desiccant.
 
 
==Dessicant Types==
Common  desiccants are silica gel (an oxide of silica), alumina (aluminum  oxide) and calcium sulfate (the anhydrous form of gypsum).
 
 
==Types of Dryers==
While  manual desiccant dryers exist, many dryers are regenerative desiccant  dryers.
 
 
==Most Expensive==
Heatless  regenerative desiccant dryers run a portion of dried compressed air  through the previously utilized cylinder to extract moisture from its  desiccant.
 
 
==Least Expensive==
Heated purge  regenerative desiccant air dryers use less air than the heatless variety  in addition to heat, which helps the air carry away more water as it  passes through the saturated desiccant.
 
 
==Best Compromise==
Heated blower  purge regenerative desiccant air dryers use air from outside the dryer  that is heated and sent through the water-saturated desiccant for  drying.
 
 
==Classification==
There are different types of regenerative desiccant compressed air dryers. These are:
* Small Heatless Desiccant Air Dryers
* Large Heatless Desiccant Air Dryers
* Compact Heatless Desiccant Air Dryers
* Mini Heatless Desiccant Air Dryers
 
 
==Video==
<youtube>EuOH0slYqbc</youtube>

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