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Variable far infrared radiation (VFIR) technique for cubic carrot drying |
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| รหัสดีโอไอ | |
| Creator | 1. Sirinuch Chindaruksa 2. Pisit Maneechot 3. Seishu Tojo 4. Kengo Watanabe |
| Title | Variable far infrared radiation (VFIR) technique for cubic carrot drying |
| Publisher | School of Renewable Energy Technology |
| Publication Year | 2555 |
| Journal Title | International Journal of Renewable Energy |
| Journal Vol. | Vol. 7 |
| Journal No. | No.2 |
| Page no. | 31-38 |
| Keyword | CT image, drying characteristics, FIR drying, shrink |
| ISSN | 1905-7172 |
| Abstract | Far Infrared Radiation (FIR) technology has rarely been used for agricultural products. In this paper, FIR technique was applied to dry a carrot and its drying performance was experimentally investigated by observing structural deformation and color change of the dried product. A Computed Tomographic (CT) scanner was employed for the observation of internal structure of product. Variable FIR drying was tested to dry carrot in the initial moisture content of 1125 %d.b. The power of variable FIR was controlled with moisture content of test carrot as follows; 600 W for 2 hours, followed by 400 W for 2 hours and maintained at 200 W FIR until the end of process. The quality of dried carrot was examined from CT image analysis and the dried carrot structure by variable FIR drying was similar to the hot air drying process. The color of the dried carrot was maintained like fresh carrot. We concluded that variable FIR drying had some advantages for energy saving, shorter drying time and quality of product in comparison with hot air drying. |
