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Not Sure Which Desiccant Dryer To Get? Take Note of These Important Model Specifications

Not Sure Which Desiccant Dryer To Get? Take Note of These Important Model Specifications


While functioning, your air compressor may collect moisture in several ways. This includes having an undersized and overused machine, malfunctioning parts, and an incompatible environment. Although most models can withstand some level of condensation, too much of it can cause rust and corrosion, compromising the quality of your compressed air and possibly damaging your final product.

To prevent this from happening, many companies invest in modular desiccant air dryers. These devices remove water from compressed air using hygroscopic substances. Some of the most common drying agents include silica gel, activated charcoal, and activated alumina.

If you need a modular cartridge desiccant dryer, you can be sure that our team at Compresstech Resources, Inc. can assist you. We have a wide catalog of industrial machines that can help improve your system. Before you contact us and get a quote, make sure to continue reading to learn more about the different model specifications of this device.

Model Specifications To Look For When Buying Modular Desiccant Dryers

Adsorbent Desiccant Material

Modular compressed air desiccant dryers contain specially selected desiccant materials that provide optimum adsorption and regeneration capacity, which are both key to ensuring consistent dewpoint. Aside from this, they also have low dusting to prevent blockage of downstream filtration and high crush strength to prevent the breakdown of the desiccant during operation.

Some modular dryers even utilize the “snowstorm filling” method to fill the drying columns (or desiccant cartridges) with adsorbent desiccant material. It entails packing carbon beds with granules to increase the amount of carbon compacted by 16% to 18%. This is incredibly beneficial as it helps the machine achieve maximum packing density, prevent desiccant attrition, provide low, equal resistance to airflow, and more.

Energy-Saving Components

Double-check if the model you’re eyeing has energy-saving technologies since these components can help you save more money in the long run. Some models nowadays have installed devices that override regular operation to utilize the drying capacity of the desiccant material fully. You don’t have to worry about your drying cycle either since these items ensure that it is unchanged.

Some also have incorporated sensors to monitor the pressure dewpoint of the compressed air leaving the dryer. If your levels are lower than the pre-set minimum, the desiccant material is only partially saturated and still has drying
capacity. These additional energy-saving components will ensure that the standard
control cycle is overridden so that the dryer will continue to dry on the same column
with zero energy consumption for regeneration.

Having all of these different technologies working together will ensure that no purge is consumed during the extension of the drying cycle. This helps you save money, energy, and compressed air.

Space-Saving Design

One of the most common reasons people opt for modular dryers is their space-saving designs. Unlike their traditional twin-tower counterparts, these machines can often fit through a standard doorway. This eliminates the need for special access or facility structural dismantling during installation.

In particular, some models have modular aluminum designs, allowing the dryer to be smaller, more compact, and lightweight. It also allows the adsorbent desiccant material to be filled using the specialist technique called “snowstorm filling.” Suppose you want to ensure the quality of your output. In that case, you can invest in pre- and after-filtration devices to reduce the presence of oil, water, aerosols, particulates, and other microorganisms on top of water vapor.

Maximum Surface Velocity

The surface velocity is a vector quantity that represents both the speed and direction of an object’s motion over a given time. This component is often measured in feet or meters per minute (ft/min or m/min). In a modular desiccant dryer system, you must take note of this figure as it affects the quantity of output your machine can produce.

To process more gas in a shorter period, it is essential to invest in a modular cartridge desiccant dryer with the appropriate model specifications. There are always professionals, such as those in Compresstech Resources, you can consult with to get accurate computations and requirements.

Contact Time

Desiccant dryers have recommended contact times. This figure represents how long the air needs to pass through the desiccant material to ensure it does not have excess moisture.

If the gas passes through the beads too quickly, it may risk containing excess water that may compromise your system or production line. However, your energy consumption will undoubtedly increase if it passes by too slowly. Furthermore, contact time directly affects how much your dryer can process at a given time.

Flow Capacity

Lastly, flow capacity is the volumetric discharge expressed per unit of time that takes place in a stream or channel. This figure can also help you determine how much your equipment can process over a given time. For modular cartridge desiccant dryers, in particular, flow capacity is typically expressed in cubic feet per second or minute (ft3/sec or ft3/min).

To differentiate flow capacity and surface velocity, the former is the maximum flow rate it can handle. In contrast, the latter is the speed at which fluid flows across the surface of a pipe.


Procuring modular cartridge desiccant dryers for your company can help you save more money in the long run. Purchasing these models may seem intimidating because of their relatively high upfront costs, but you can be sure they are worth the investment.

At Compresstech Resources, Inc., we are dedicated to providing you with industrial machines that best fit your needs and preferences. Our team can recommend models that have the exact specifications you need. Reach out to our team today to learn more. We look forward to hearing from you!

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