Research Article
Thermal Diffusivity, Moisture Diffusivity, and Color Change of Codonopsis javanica with the Support of the Ultrasound for Drying
Table 3
Parameters (De, at, hm, and ht) of Codonopsis javanica at different conditions.
| | Cases | Iu (kW/m2) | ta (°C) | De × 10−10 (m2/s) | αt × 10−7 (m2/s) | hm × 10−3 (kg/m2s) | ht (W/m2K) | MRE (%) |
| | 1 | 0 | 40 | 3.2 | 1.01 | 2.3 | 29.2 | 3.3 | | 2 | 1.3 | 4 | 1.13 | 2.8 | 39.8 | 3.1 | | 3 | 1.8 | 4.6 | 1.27 | 3.2 | 48.8 | 3.4 | | 4 | 2.2 | 5.6 | 1.32 | 3.8 | 60.1 | 6.8 |
| | 5 | 0 | 45 | 3.9 | 1.16 | 2.9 | 30.7 | 3.0 | | 6 | 1.3 | 4.9 | 1.30 | 3.2 | 40.7 | 2.7 | | 7 | 1.8 | 5.7 | 1.35 | 3.6 | 51.2 | 2.9 | | 8 | 2.2 | 6.4 | 1.37 | 4.0 | 62.4 | 4.4 |
| | 9 | 0 | 50 | 4.9 | 1.27 | 3.4 | 33.2 | 2.7 | | 10 | 1.3 | 5.9 | 1.35 | 3.6 | 41.6 | 2.2 | | 11 | 1.8 | 6.4 | 1.37 | 3.9 | 53.6 | 5.2 | | 12 | 2.2 | 6.7 | 1.38 | 4.1 | 63.6 | 2.6 |
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