Calculation of Moisture Content and Drying Rate during Microwave Drying

Convectional dryers work at high temperature and usually lead to loss of quality for sensitive biomaterial products (especially in nutrition). In this way the researchers found the microwave power more effective and suitable for drying processes. Some of microwave drying advantages include the following: short drying time, high quality of product, low operating temperature, flexibility in producing wide range of products and easier process controlling. The article calculated the moisture content and drying rate during drying process. Microwave power, holder tray speed, dimension of samples, irradiation time were considered; under these conditions experiments were done and the results show that microwave method has more advantages as comparing with convectional methods.