Open AccessExperimental Study on the Performance Characteristics of a Microwave - Solar Heating Dryer
Author(s) -
Lukas Kano Mangalla,
Lecturer Ahmad,
Agustina Lolok,
Jenny Delly,
. Kadir,
Samhuddin,
Abdul Kadir,
Budiman Sudia,
dan L. Pagiling
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/797/1/012017
Subject(s) - microwave , moisture , water content , solar dryer , materials science , environmental science , solar energy , microwave oven , pulp and paper industry , process engineering , composite material , electrical engineering , engineering , telecommunications , geotechnical engineering
The use of microwave energy for drying of agricultural products is recently developed due to the advantageous of heating the product much faster and more effective than conventional methods. Moisture content of agricultural product should be evaporated immediately after harvesting in order to inhibit microbial growth and decrease enzymes activity. This work aim to investigate characteristics of microwave-solar hot air drying of agricultural products such as rice grain and potato using a commercial microwave oven and hot air from a can solar collector. A domestic microwave oven was modified in order to operate as a microwave dryer device. The state of the art of microwave-solar heating was developed for investigation on drying performance of agricultural products such as grains and potato slices. Measurements on the temperature of drying chamber and moisture content of the product were conducted under different power inputs of microwave (low, middle and high) and intensity of solar drying. It was observed that microwave-solar air dryer proposed good heating performance and quality of products. Furthermore, temperature, moisture changes and drying rate could be controlled during the drying process.