The Tray Dryers are convectional drying equipment with enclosed insulated chambers and trays placed on top of each other in a trolley. The driers are used in processes where drying and heating are a crucial part of the industrial manufacturing process such as in the food products, pharmaceutical, dye stuff, and chemicals manufacturing among others. They are used where heating and drying are essential parts of manufacturing process in industries such as chemicals. The Tray Dryers are very effective.