| 长豇豆隧道式热风干燥特性及品质变化 |
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| 引用本文： | 师建芳,吴辉煌,刘清,吴中华. 长豇豆隧道式热风干燥特性及品质变化[J]. 天津科技大学学报, 2013, 0(5): 23-27 |
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| 作者姓名： | 师建芳 吴辉煌 刘清 吴中华 |
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| 作者单位： | 1. 农业部规划设计研究院农产品加工工程研究所,北京,100125
2. 天津科技大学机械工程学院,天津,300222 |
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| 基金项目： | 农业部规划设计研究院自选课题 |
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| 摘 要： | 应用自制隧道式干燥实验台对95,℃漂烫2,min后的长豇豆进行热风干燥实验,分析了在不同热风温度、热风速度、料层厚度条件下豇豆的干燥特性及干产品品质.结果表明:长豇豆干燥过程中干燥第1阶段表现明显,热风温度对干燥速率及品质的影响最大;经漂烫后的长豇豆在热风温度60,℃、热风速度0.3,m/s、料层厚度6,mm条件下干燥时所得产品Vc含量最高.研究结果可为长豇豆隧道式热风干燥生产实践提供参考依据.
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| 关 键 词： | 豇豆 隧道干燥器 热风干燥 产品品质 |
Drying Characteristics and Product Quality of Cowpeas in the Convective Tunnel Drying Process |
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| SHI Jianfang , WU Huihuang , LIU Qing , WU Zhonghua. Drying Characteristics and Product Quality of Cowpeas in the Convective Tunnel Drying Process[J]. Journal of Tianjin University of Science & Technology, 2013, 0(5): 23-27 |
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| Authors: | SHI Jianfang WU Huihuang LIU Qing WU Zhonghua |
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| Affiliation: | 1. Department of Agricultural Processing, Chinese Academy of Agricultural Engineering, Beijing 100125, China; 2. College of Mechanical Engineering, Tianjin University of Science ＆ Technology, Tianjin 300222, China) |
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| Abstract: | Convective air drying of fresh cowpeas was done in a lab-scale tunnel dryer, and parametric studies were con- ducted to understand the effect of drying air temperature, velocity and material layer thickness on the drying characteristics of cowpeas and the quality of the dried product. Experimental results show that the first stage drying dominates the cowpea drying process and the drying air temperature has an important effect on the drying rate and product quality. The optimized drying conditions with the highest content of Vc were obtained for the fresh cowpeas： the drying temperature was 60℃, air velocity was 0.3 m/s and the material layer thickness was 6nm. The study can provide some useful technical data for the tunnel drying of cowpeas. |
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| Keywords: | cowpea tunnel dryer convective drying product quality |
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