The Development of Thin-layer Dryer Using Combine Heating Energy YRU-TLD#1(R&E)

Abstract

The dryer is an important apparatus for the studying of the drying kinetic of food materials and agricultural products. Thus, this research are selected to design and  construction of the Thin-layer dryer (TLD) using combine heating energy of hot air and solar energy (YRU-TLD#1(R&E)) for drying kinetic of food materials and agricultural products. The indoor and outdoor situations are tested, the temperature of heater and air velocity is supervised in range of 60-200 ํC and 1-3 m/s respectively. The result from this study indicates that the heater temperature increases according to the rising temperature in the dryer and when the heater temperature is constant, the outdoor testing shows higher temperature than the indoor. The air velocity is affected by the temperature within the dryer chamber regardless of an indoor and outdoor testing, and it was found that whenever the air velocity increases the temperature in the dryer chamber decreases accordingly. This designed and constructed dryer is, therefore, able to use for drying kinetic of food and agricultural products.