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DESICCANT DEHUMIDIFIER
Creating Dry Climates
KINFOLK Desiccant Dehumidifier handles the room air or ambient air and adsorb the moisture thereby reducing and maintaining very low moisture content in the air required for any process or to achieve any room design conditions.
Principle of Dessicant Dehumidification
Principle based on the diagram
- The dehumidifier consists of a desiccant rotor (which consists of desiccants with high affinity) which is rotated at a particular speed (RPH) by a small gear drive motor.
- The dehumidifier is divided into process and reactivation segments, any portion of the rotor keeps moving towards the process and reactivation segments simultaneously. Both the segments are sealed by a high pressure silicon seals.
- The process air (from room or ambient) is drawn by a blower through the larger segment which loses its moisture to the desiccants in the rotor which is called adsorption and goes out as dry air.
- Another stream of ambient air which is preheated/heated to higher temperature (to reduce the RH) in the reactivation side is drawn in opposite direction by another blower to pass through the reactivation segment where the moisture is physically removed which is called desorption and vented out hence the desiccant rotor will not be saturated.
- The portion of rotor from which the moisture is removed in reactivation segment will become ready for moisture adsorption again when it comes to the process segment.
Psychrometric Chart and Desiccant Dehumidification
Desiccant Dehumidification – The Science of Dry Air
- The psychrometric chart is one of the most fundamental tools used in air conditioning and humidity control (dehumidification) engineering. It provides a graphical representation of the physical and thermal properties of moist air — such as dry-bulb temperature, wet-bulb temperature, relative humidity, humidity ratio, enthalpy, and dew point temperature. By studying the movement of air conditions on this chart, one can clearly visualize how air is cooled, heated, humidified, or dehumidified in a process.
- In desiccant dehumidification, also known as chemical dehydration, the process air passes through a desiccant material that adsorbs or absorbs moisture directly from the air stream.
This is an energy-balanced process, where the removal of moisture releases heat — equivalent to the latent heat of vaporization of the extracted water. As a result, the air leaving the desiccant becomes warmer and significantly drier, following a downward-sloping path on the psychrometric chart that closely aligns with the wet-bulb line.
The exact slope of this line may vary slightly, depending on whether heat is stored, liberated, or absorbed within the desiccant material during regeneration and drying. This precise control of humidity makes desiccant systems ideal for low dew point applications where conventional cooling-based methods fail to achieve.
TECHNICAL DATA & CONFIGURATIONS
KINFOLK DESICCANT DEHUMIDIFIER FEATURES
- Air Volume - 300 CMH to 30000 CMH
- RH achievable upto 1% @ required DBT
- Precooling module - for fresh air available
- Filteration - multi stage available
- Post Cooling module - for Total process air available
- Honey comb shaped Desiccant Rotor made of silicates on metal substrate with higher surface area to absorb more moisture - high efficiency
- Standalone Dehumidifier - Easy to install and operate-directly or clubbed with HVAC system
- Integrated Dehumidification System - Desiccant Dehumidification with cooling modules available
- Single Skin welded construction
- Double skin module also available
- Desiccant wheel Regeneration temperature - low / moderate / high according to the application needs or the heating resource available
- Regeneration Heating option - Electrical / Steam / Thermic fluid / gas
- Heat pipe (option) based heat recovery for regeneration module available
- Humidification misting module with nozzles
- Direct driven SISW fan impellers with backward/ forward curves
- Servo based volume control modules available
- Electric panel with all safety and VFD control options
- BACNET / MODBUS protocol options - Easy integration