What is Hot Air Tray Dryer ?
It is defined as the dryer machine which has enclosed cabinet, inside which trays are put on trolleys and hot air is being circulated through trays and which helps to remove the moisture or solvent percentage of wet or moist product which needs to be dried.
It operates by circulating hot air through a set of trays or shelves, each containing a layer of the material to be dried. This process accelerates the evaporation of moisture, resulting in the drying of the materials. Hot air tray dryers are commonly used in various industries, including pharmaceuticals, chemicals, food processing, and agriculture.
CAPACITIES AVAILABLE: 24 TRAYS, 48 TRAYS, 96 TRAYS, 192 TRAYS
Key features and components of a hot air tray dryer machine:
- Trays or Shelves: The drying chamber of the machine contains trolleys in which multiple trays can be placed. The trays are usually arranged in a vertical stack. Each tray holds a feed ingredients material to be dried.
- Heating System: The Tray dryer cabinet has the heating system of either electric heaters or steam radiators as a source of heating.
- Air Circulation System: A customized fan or blower system is used to circulate the hot air within the drying cabinet. This ensures uniform and even distribution of heat and maintains a consistent drying environment across all trays.
- Temperature Control: Hot air tray dryers have temperature control mechanisms that allow operators to set and maintain the desired drying temperature.
- Airflow Control: The airflow rate is adjustable, helping to control the drying rate and efficiency.
- Exhaust System: Moisture-laden air is expelled from the drying chamber through an exhaust system. This helps prevent humidity buildup within the chamber.
- Insulation: The drying chamber is often insulated to minimize heat loss to the surroundings.
- Timer and Controls: The machine includes controls for setting the drying time, temperature, and other parameters.
Working Principle of a Hot Air Tray Dryer:
- Loading : Wet or moist materials are spread out evenly on the trays or shelves within the drying chamber.
- Heating: The heating system generates hot air, which is then directed into the drying chamber.
- Circulation: The fan or blower circulates the hot air throughout the chamber, causing it to come into contact with the wet materials on the trays.
- Evaporation: As the hot air flows over the wet materials, it absorbs the moisture, causing it to evaporate. The moisture-laden air is expelled from the chamber through the exhaust system.
- Drying: With the continuous circulation of hot air, the moisture content of the materials gradually decreases, leading to drying.
- Completion: Once the desired level of dryness is achieved, the drying process is halted.
Advantages of Hot Air Tray Dryers:
- Uniform Drying: Even distribution of hot air ensures uniform drying across all trays.
- Energy Efficient: These dryers are energy-efficient due to the circulation of hot air.
- Controlled Drying Conditions: Operators can control temperature, airflow, and drying time for optimal results.
- Batch Drying: Suitable for drying small batches of materials.
- Reduced Risk of Contamination: Enclosed drying environment reduces the risk of contamination from external sources.
- Hot air tray dryer machines are valuable tools for removing moisture from materials while maintaining their quality and integrity. They are widely used for various applications, such as drying pharmaceuticals, chemicals, food products, and agricultural materials like herbs and fruits.