Electric Tray dryer or tray drying oven is widely used in laboratories, food, chemical and spices industries to remove moisture content from final product. As the name states, trays are important part of these machines, samples are put in trays, loaded on trolley and then dried under heated chamber under different temperatures such as 100°C, 160°C, 250°C etc. in presence air circulation.

We are tray dryer manufacturers and suppliers in India. We make electric tray dryers for laboratory use and production scale for food and spices processing and drying tea leaves. In order to minimize drying cost and time; it is ensured that there should be efficient air velocity between trays and gap between trays should be uniform. Large sizes are also made on request and sold at highly competitive price in India.

An electric tray dryer is a specific type of tray dryer that utilizes electric heating elements as the heat source for the drying process. Instead of relying on gas burners or steam coils, electric tray dryers generate heat using electric resistance heaters.

Here are the key features and working principles of an electric tray dryer:

1. Construction: An electric tray dryer consists of a drying chamber or cabinet that houses multiple trays or shelves. The chamber is typically made of stainless steel or other heat-resistant materials to withstand high temperatures and resist corrosion.

2. Electric Heating Elements: Electric tray dryers are equipped with electric heating elements, often in the form of heating coils or rods. These elements are made of electrically conductive materials that convert electrical energy into heat when an electric current passes through them.

3. Temperature Control: Electric tray dryers have temperature controls and sensors to regulate and maintain the desired drying temperature. The temperature can be adjusted based on the specific material being dried and the drying requirements. Some models may also include timers and programmable controllers for precise temperature and time settings.

4. Air Circulation: Electric tray dryers use a fan or blower system to circulate heated air within the drying chamber. The fan draws air over the heating elements, heating it, and then distributes the heated air evenly throughout the chamber, ensuring uniform drying across the trays.

5. Airflow Control: The design of the drying chamber allows for controlled airflow. Air enters the chamber from the bottom or side and is drawn out through exhaust vents or ducts. This maintains a continuous flow of heated air over the material, facilitating efficient drying.

6. Drying Process: The material to be dried is spread out on the trays in a thin layer, allowing for proper heat transfer and uniform drying. The heated air circulates over and through the material, absorbing moisture and carrying it away. As the drying progresses, the moisture content decreases, and the material gradually becomes dry.

7. Monitoring and Adjustments: During the drying process, operators monitor the drying conditions, including temperature, airflow, and drying time. Adjustments can be made to ensure optimal drying performance and prevent under-drying or over-drying of the material.

8. Unloading: Once the drying process is complete, the trays can be removed from the drying chamber, and the dried material can be unloaded. Depending on the specific material and its intended use, further processing or packaging may be required.

Electric tray dryers are commonly used in various industries, including food processing, pharmaceuticals, chemicals, and research laboratories. They offer advantages such as precise temperature control, ease of operation, and the absence of combustion gases or emissions associated with other heating methods. Electric tray dryers are particularly suitable for applications where precise temperature control is crucial or where the use of gas-fired equipment may be impractical or undesirable.