COOL Non-Cycling Refrigerant Dryer By Pneumatech
12-272CFM Non-Cycling Refrigerant Air Dryers
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When deciding if the membrane dryer suits you and your operation, you’ll want to consider the costs and benefits of each type of compressed air dryer.
12-272CFM Non-Cycling Refrigerant Air Dryers
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Membrane dryers may seem like the best option for you and your system, just from the savings alone; however, these savings may cost you in the long run. Membrane dryers excel in specific industries that have rigid air requirements, such as:
Industries with rigid air requirements often have finely tuned filtration systems in place before their dryer, and in instances like this, the membrane dryer excels. High-level filtration occurs before the air reaches the dryer, reducing the odds of the dryer being overwhelmed or excess condensation making it downstream.
If you want to remove the condensation from your compressed air system and do not have stringent air requirements, refrigerant air dryers are your best bet. They may cost a little more upfront, but they will mesh much better with your system.
Oftentimes, the initial cost of membrane dryers will cost you more in the long run, even if they are cheaper upfront. With limited fluctuation in these dryers, any environmental fluctuations can overwhelm your dryer and completely throw off your process. They might seem like the cheapest option, but that’s only when you consider the upfront cost, not the equipment’s lifetime cost.
Membrane dryers rely on physical separation to remove condensation from the compressed air through the fibers and their semipermeable characteristics. The semipermeable membrane pulls the water out of the air stream through physical contact between the molecules and fibers.
Contrasting to the physical separation methods used by membrane dryers, refrigerant air dryers use water precipitation principles. The dryer reduces the air stream’s temperature to a level where the water vapor is condensed and drops out of the compressed air stream into a receptacle. To maximize the application of the precipitation principles, refrigerant dryers come in both cycling and non-cycling variants, with cycling variants being much more energy efficient.
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Due to the nature of Desiccant Dryers, they are often compared with membrane dryers. They may have similar results with low energy requirements; however, the mechanisms for achieving these results are vastly different. Compared to the membrane dryer’s process, desiccant air dryers use hygroscopic materials nested within the drying towers. Typically, there are two towers included in a desiccant dryer setup and the air alternates between which tower it is flowing through.
As the air flows into one of these towers, it passes through one of these towers filled with desiccant material. The material pulls the water in from the air and stores it inside the individual pellets. Once they become saturated enough, the towers will swap jobs. The first tower that was drying air before will regenerate the desiccant material using purge air, while the second tower will dry the compressed air. Swapping extends the lifespan of the desiccant and increases the time between scheduled downtimes.
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