Rm 1606, Yinxiao Tower Building A, No 6259 Humin Rd, Minhang district,Shanghai Postcode201100 Mr. Dong(Sales
021-54131288 021-64130070 021-64122257, 0086-21-64130070-8003, 021-67356889 021-67355355-801, 021-67355355-885, 021-67355355-813, 021-67355355-812, 021-67355355-883, 021-67356890
13681893399
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. |
Maintenance cost comparisons for Air Dryer
power of compressor | Refrigerant Air Dryer | Deliquescent Air Dryer | |||||
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