What Are the Different Dehumidifiers?

Excess moisture can cause serious problems within industrial, commercial and manufacturing environments. High humidity can contribute to corrosion, condensation, mould growth, product damage and changes in manufacturing conditions. It can also make it harder to maintain the controlled environment required for certain processes.

Dehumidifiers remove moisture from the air and help maintain suitable humidity levels. However, different environments require different methods of moisture removal. The main options include desiccant dehumidifiers and refrigerant dehumidifiers, while specialist technologies such as Consorb, Recusorb, Flexisorb and Aquasorb provide solutions for specific industrial requirements.

Understanding how each system works can help businesses choose equipment suited to their operating conditions.

Desiccant Dehumidifiers

Desiccant dehumidifiers use a moisture-absorbing material to remove water vapour directly from the air. Rather than cooling air until moisture condenses, the system passes humid air through a desiccant rotor.

The rotor contains a material that attracts and holds water molecules. As process air travels through one section of the rotor, moisture is removed and drier air is supplied back into the required area.

The rotor continually rotates into a regeneration section. Heated air passes through this area and releases the collected moisture, allowing the desiccant material to be used again.

One major advantage of desiccant technology is its ability to operate effectively at low temperatures and low humidity levels. This makes it particularly useful for cold stores, food production facilities, pharmaceutical manufacturing, storage areas, water treatment facilities and other industrial processes where precise humidity control may be required.

Desiccant systems can also achieve very low dew points, making them suitable for applications where refrigerant technology may become less effective.

Refrigerant Dehumidifiers

Refrigerant dehumidifiers use cooling technology to extract moisture from humid air.

Air is drawn into the unit and passed across a cold evaporator coil. When the temperature of the air falls below its dew point, water vapour condenses into liquid water. This water is then collected or drained away before the air passes across a warmer coil and returns to the room.

The principle is similar to the condensation that appears on a cold surface in a warm, humid environment.

Refrigerant dehumidifiers can provide an efficient solution where temperatures are relatively warm and humidity levels are high. They are commonly used for building drying, swimming pools, warehouses, production facilities and commercial environments.

Their effectiveness can decrease as temperatures fall. For applications involving cold conditions or very low target humidity levels, a desiccant system may therefore provide a more suitable option.

Consorb Dehumidifiers

Consorb is a desiccant dehumidification principle developed for applications where the regeneration air contains moisture that needs to be prevented from entering the dry process airflow.

The rotor is divided into separate process and regeneration air zones. Moisture is collected by the desiccant rotor before being driven out using heated regeneration air.

A key feature of the Consorb principle is that the regeneration airflow operates in an open circuit. This can make Consorb suitable for general industrial drying applications where reliable moisture removal is required.

Applications can include warehouses, manufacturing facilities, storage environments, corrosion protection and industrial production areas.

Recusorb Dehumidifiers

Recusorb systems use heat recovery as part of the desiccant dehumidification process.

Within the system, part of the rotor is used to recover heat generated during regeneration. This recovered thermal energy is then used within the dehumidification cycle.

The arrangement can reduce the amount of external energy required for regeneration and can be particularly useful where substantial amounts of moisture need to be removed continuously.

Recusorb technology can be used across industrial drying, process air control and manufacturing applications. It provides an option for businesses that require dependable humidity management over extended operating periods.

Flexisorb Dehumidifiers

Flexisorb technology provides greater flexibility in the way the regeneration process is configured.

Depending on the application, regeneration can use different available heat sources. This may include electricity, steam, hot water or other suitable thermal energy sources.

For industrial sites with existing heat supplies, this flexibility can be valuable. Rather than relying solely on electrical heaters, a system may be configured around the energy sources already available at the facility.

Flexisorb systems can therefore be suited to manufacturing plants and larger industrial environments where dehumidification needs to work alongside existing heating, cooling and process systems.

Aquasorb Dehumidifiers

Aquasorb systems are designed for applications where moisture removal involves very humid air conditions.

They can be particularly useful where substantial quantities of water need to be removed or where an industrial process creates a continuous moisture load.

Aquasorb technology uses a specialised rotor configuration that supports efficient moisture transfer under these demanding conditions. This makes the technology suitable for applications where conventional approaches may struggle with the level of moisture entering the system.

Potential applications can include water treatment environments, industrial drying processes and facilities where evaporation continuously adds moisture to the surrounding air.

Which Type of Dehumidifier Do You Need?

Choosing between dehumidification technologies requires more than simply looking at the size of the room. Temperature, relative humidity, required dew point, airflow, moisture load and operating hours can all affect equipment selection.

A warm environment with high relative humidity may be well suited to a refrigerant dehumidifier. A cold store or production area requiring very dry air may benefit more from a desiccant system.

For more specialist industrial requirements, technologies including Consorb, Recusorb, Flexisorb and Aquasorb allow dehumidification systems to be configured around specific process conditions and available energy sources.

The correct system should be selected according to the actual moisture load and environmental conditions. A properly specified dehumidifier can help control condensation, protect equipment and materials, support manufacturing processes and maintain stable conditions throughout a facility.

With several technologies available, businesses can select a dehumidification method that matches both their environment and the level of humidity control their process requires.