This is exactly how Scanair dehumidifier’s work, with a fewer minor differences to improve the effectiveness. A fan is used to speed up the process. It blows warm air onto cold metal coils, and the resulting water drips into a bucket. The resulting cold air is then passed over warm coils to bring it back to room temperature. Air conditioners work in the same way, but they do not reheat the air before returning it to the room.

How Dehumidifiers work

Scanair Heat pump dehumidifiers extract water from the air by using a heat pump that is similar to an air conditioner. First, a fan pulls the indoor air across a very cold coil, which causes the moisture to condense. The droplets drip into a bucket inside the unit. The dry air is warmed by a second, heated coil and exhausted at room temperature. These dehumidifiers are considered among the most effective.

Scanair produce various types of dehumidifier and specifications as per customer requirements. Refrigeration-based dehumidification systems are more economical than desiccants at high temperatures and high moisture levels. In general, mechanical refrigeration systems will come down up to 40% RH.

Desiccant-based systems are more economical than refrigeration systems at lower temperatures and lower moisture levels. Typically, a desiccant dehumidification system is utilized for applications below 40% RH down to 1% RH.

Thus, in many applications, a DX or chilled water pre- cooling coil is mounted directly at the dehumidifier inlet. This design allows for removal of much of the initial heat and moisture prior to entering the dehumidifier where the moisture is reduced even further. Chemical absorbent dehumidifiers work best in warm climates.

They use a chemical drying agent, or desiccant, on a heat exchange wheel to absorb water molecules from the air. Damp air is sent outside via vents. Desiccant dehumidifiers use a lot of energy. They are more commonly used by industries than homeowners.

Dehumidifiers Industrial Applications

Scanair Dehumidifiers meets wide range of industrial needs, which has become an essential machinery in production of various components, some of the major industrial applications are – CNC Machines Control Cabinets, Candy Manufacturing, Fertilizers / Powder Storage Warehouses, Paint Booth and Paint Lines, Laundry and Dry Cleaning Establishments, Agricultural Produce Storage Buildings, Warehousing & Storage Areas, Drying Rooms

Scanair industrial dehumidifiers are engineered for demanding process drying applications and incorporate latest in the industry leading designed uncontrolled. Package with enhanced futures and high performance refrigeration components are multiple refrigerant cooling injection technology used evaporator coil for optimum level dehumidification.  Product available with wide range from 150 Cfm To 15000 Cfm capacity will maintain between 30% To 40% RH available in standard Models. An custom built designed dehumidifier will maintain below 30% RH with the help of desiccant technology combined units.  Those units are designed new generation styled and built aesthetically to match the modern trend in equipment manufacturing.

Dehumidifiers for Pharmaceutical Production

Dehumidifiers are the most essential component in Pharmaceutical industry, where the rapid technological advances in the have focused the attention on a vast number of moisture control issues.  For example, the presence or absence of a specific amount of moisture in the processing area may be required to grow certain organic cultures.  Or, the presence of moisture may be absolutely necessary for the manufacture of a particular drug.  Similarly, the absence of moisture may be equally imperative for the production of some other drug.  Strict control of moisture is a key factor in the manufacture of most drugs and medicines.

Dehumidifiers play a central role in Pharmaceuticals, where the materials used have a physical affinity for moisture.  This can cause lumping or caking of powdered material.  Further, some powders that are bound into a capture or formed into a tablet under high pressures will adhere only when in a dry state, Humidity can cause a tablet to crumble, and in some cases, it can cause the drug to decompose and diminish in its therapeutic value. To assure consistently high quality drugs, the processing area and machinery must be surrounded by air whose dryness is accurately known with temperature and humidity under control.

Dehumidifiers for Chemical Production

In order to achieve the controlled air requirement listed above, refrigeration equipment alone becomes uneconomical, impractical and cumbersome to design, operate and maintain.  On the other hand desiccant type dehumidifiers combined with refrigeration can offer a simple and economical solution to controlling both temperature and humidity levels as low as necessary. The same sort of lumping and caking of powdered substances previously discussed is also a major problem in the industrial chemical production.  Dehumidifiers play a major role in preserving the chemicals intact, as some chemicals decompose in the presence of water vapor.  In other situations, water vapor can actually cause a chemical reaction that changes the character of the product. Atmospheric moisture is also a natural enemy to many grinding and pulverizing operations.  Water vapor in contact with the product can make it resilient and difficult to grind, causing it to cling to the grinding machine and defy pneumatic conveyance from one process area to another.

Industrial Dehumidifiers Industrial Applications

Industrial Dehumidifiers are widely used in the following areas, Blister Packing Machine, Pouch Filling Machine, Printing Industries, Hospital Operation Theaters, Medical Equipment , MRI scan, CT scan, Pet Scan Rooms, pharmaceutical productions, Laboratories, R & D Labs, Food Processing Plants, Clean Rooms, Textile Plants, Food Drying, Packaging Areas.