Tips for Buying a Compressed Air Dryer


Air dryers are commonly used in a variety of appliances. They are a highly-demanded product in a number of different industries, and are available primarily from specialist companies that cater to industrial businesses. If you are thinking of buying a compressed air dryer for any particular application, there are several different things that you should keep in mind. Here are a few tips that will make it easy for you to buy the right compressed air dryer, depending upon the application for which you need it.

Types of Air Dryers

First of all, you need to know a thing or two about the different kinds of compressed air dryers. There are many different types of air dryers available in the market, each with different functions. The four most popular kinds of air dryers used today are chemical, desiccant, membrane, and refrigerated air dryers. Before you think about buying an air dryer, you need to know a bit about the drying technology used, so that you are able to make the best choice for your needs.

Chemical Dryers: In this type of a dryer, the air passes over different beds of chemicals, the most common of which are calcium chloride and lithium chloride. These chemicals attract the water vapour; they are discarded when they become saturated with water vapour. They are able to achieve a dew point of around 15 degrees Centigrade. However, you have to make sure that you install a high-powered coalescing filter in the chemical dryer to prevent damage. In case excessive water enters the dryer, it could drastically reduce the life of the chemicals inside.

Desiccant Dryers: The concept of desiccant materials and chemical dryers is essentially the same; one passes the air over a bed of chemicals whereas the other passes the air over a bed of desiccant material. Two further kinds of dryers are available; heated and heatless.

Membrane Air Dryers: These air dryers pass the air through a thin membrane that does not allow water vapour to pass through, thus causing the air to dry quickly.

Refrigerated Air Dryers: refrigerated air dryers primarily work by cooling the air, thus reducing the temperature and causing condensation of most of the water vapour. However, refrigerated air dryers are most suitable in areas where water-sensitive applications aren’t available. Keep in mind that a little bit of the water vapour will still be left in the air, so you have to make sure that this type of air dryer isn’t used in water sensitive regions.

Which One Is Best For You?

As you can see, there’s really no “best” option in this case. Every dryer has its own pros and cons, and is suitable for a particular type of environment. If you are unable to determine which dryer is best for you, it might be a wise idea to contact the seller. The seller will be able to inform you about the different types of air dryers and make it easy for you to choose the right one for your needs.