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Design and Experiment of Combined Infrared and Hot-Air Dryer Based on Temperature and Humidity Control with Sea Buckthorn (Hippophae rhamnoides L.)

文献类型： 外文期刊

作者： Geng, Zhihua 1 ; Li, Mengqing 1 ; Zhu, Lichun 1 ; Zhang, Xiaoqiang 1 ; Zhu, Hongbo 1 ; Yang, Xuhai 1 ; Yu, Xianlong 2 ; Zhang, Qian 1 ; Hu, Bin 4 ;

作者机构： 1.Shihezi Univ, Coll Mech & Elect Engn, Shihezi 832003, Peoples R China

2.Xinjiang Prod & Construct Corps, Key Lab Modern Agr Machinery, Shihezi 832003, Peoples R China

3.Shandong Acad Agr Sci, Jinan 250100, Peoples R China

4.Minist Educ, Engn Res Ctr Prod Mechanizat Oasis Special Econ Cr, Shihezi 832003, Peoples R China

关键词： combined infrared and hot-air dryer; temperature and humidity control; numerical simulation; structure optimization; sea buckthorn

期刊名称：FOODS （ 影响因子：5.2； 五年影响因子：5.5 ）

ISSN：

年卷期： 2023 年 12 卷 12 期

页码：

收录情况： SCI

摘要： A drying device based on infrared radiation heating technology combined with temperature and humidity process control technology was created to increase the drying effectiveness and quality of sea buckthorn. Based on the conventional k-turbulence model, the velocity field in the air distribution chamber was simulated using COMSOL 6.0 software. The airflow of the drying medium in the air distribution chamber was investigated, and the accuracy of the model was verified. Given that the inlet of each drying layer in the original model had a different velocity, the velocity flow field was improved by including a semi-cylindrical spoiler. The results showed that installation of the spoiler improved the homogeneity of the flow field for various air intakes, as the highest velocity deviation ratio dropped from 26.68% to 0.88%. We found that sea buckthorn dried more rapidly after being humidified, reducing the drying time by 7.18% and increasing the effective diffusion coefficient from 1.12 x 10(-8) to 1.23 x 10(-8) m(2)/s. The L*, rehydration ratio, and vitamin C retention rate were greater after drying with humidification. By presenting this hot-air drying model as a potential high-efficiency and high-quality preservation technology for sea buckthorn, we hope to advance the development of research in the sea buckthorn drying sector.

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