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1.Air Dryer,desiccant air dryer, refrigerated, Absorption air dryer, 2.20years experience, 3.CE, 4.screw air compressor dryer - details see: https://www.machineto.com/air-dryer-deliquescent-vs-refrigerant-10297302

Air Dryer,delisccant air dryer, refrigerated, Absorption air dryer

3BASIC TYPS	Deliquescent	Refrigerant	Regenerative
HOW DRYER REMOVES MOISTURE	Chamical Absorption. Desiccant absorbs moisture and dissolve slowly.Desiccantis not regenerated.	Heat Transfer cools air to condense moisture	Chamical Adsorptive,Desiccant attracts&holds moisture on surface unit regenerated.
Operating principles	Air enters lower central area of vessel where larger droplets and solid particles are separated mechanically.As the desiccant bed,moisture is adsorbed by the tablets.The water and dissolevd desiccant drop to the claim area,which can be drainde manually or automatically	Entering air is pre-cooled in first heat exchanger before entering the second for final cooling.Heat from the air is transferred to the cool refrigerant.Condensed moisture is trapped and discharged through an auto drain	One tower receives wet air,which flows through desuccant bed,and the moisture collects on the desiccant.Simultaneously,desiccant in other tower is being regeneated.Collected moisture is driven off by electric or steam heat and/or a perge of dry air from operating tower.
Desiccant Required	Desiccant tablet	None	Activated Alumina&Molecular Sieve
Energy Required to operate	None	Electric (all models). water for watercooled condensers where specified	Electric(all models)plus power for regeneration electric or stem heat or compressed air purge
Environmentol problem	None	Exhaust gas pollution of cool coal	Rest of active carbon,pollution
pressure Dew Point(at7kgf/c)	8 (The yearly mean)	4-10	-40-80
Oil Removal Ability	Will remove some larger liquid-phase oil particles	Will condense some oil droplets during cooling process.	None
Pressure Drop	Less than 1% of operating pressure	5-8%	10-15%
Inlet Air Temp-MAX -MIN	38 No minimum	38 4	38 4
Location	Indoors or out doors	Indoors	Indoors or out doors
PRE FILTER REQUIRED	Recommended where heavy amounts of oil are present to prevent coating of desiccant tablets	Recommended.prevents fouling of heat exchangers.	Yes.Prevents oil and liquid water from damaging or overloading desiccant bed.
AFTER FILTER REQUIRED	Yes.To prevent particle migration from desiccant in case of system upset	Recommended for critical applications.	Yes.To prevent particle migration from desiccant.
Maintenance	Drain condensate once per shift-either manually or with motorized drain	Blow dust from condenser fins regularly.check and clean auto drain.	Replace desiccant every 1 to 2 years.Adjust controls.Clean or re place filter elements.
Repair Requirements	None No moving parts to repair	Requires qualified service personnel.	Requires qualified service personnel
Comp economical efficiency and function of product	Comparing Air Dryer:Heatless Regenerative and External Heater Regenerative,it will save expenses without air consumed	Regular maintain;outlet of pollution;the air will be consumed about 8-10%	Ative alumina replaced by every year;expenses increased;air consumption will be more.