喷淋预冷工艺参数对荔枝降温特性的影响

S375%TS255.3; 为掌握喷淋预冷工艺参数对荔枝降温特性的影响,搭建了荔枝喷淋预冷试验平台,以"淮枝"荔枝为试验材料,研究了喷淋温度和喷淋流量对单层荔枝果实以及多层荔枝果实喷淋预冷降温特性的影响.试验结果表明:单层荔枝预冷,喷淋温度越低,冷却系数越大,7/8预冷时间越短,果实温度均匀性越差,选择(5±0.5)℃,能够保持较好预冷均匀性和较快的预冷速度;喷淋流量增大,冷却系数先增大后趋于稳定,7/8预冷时间先缩短后趋于平缓,与喷淋流量呈二次函数关系,果实温度均匀性提高,临界喷淋流量为5.9 L/(s·m2);多层荔枝堆叠时,果实离喷头越近,冷却系数越大,7/8预冷时间...

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Published in农业工程学报 Vol. 34; no. 24; pp. 292 - 298
Main Authors 吕恩利, 陈明林, 刘妍华, 郭嘉明, 黄浩, 虞新新, 李鹏飞
Format Journal Article
LanguageChinese
Published 华南农业大学工程学院,广州,510642%华南农业大学工程基础教学与训练中心,广州,510642 15.12.2018
Subjects
温度
荔枝
喷淋预冷
流量
降温特性
果实
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ISSN1002-6819
DOI10.11975/j.issn.1002-6819.2018.24.035

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Abstract S375%TS255.3; 为掌握喷淋预冷工艺参数对荔枝降温特性的影响,搭建了荔枝喷淋预冷试验平台,以"淮枝"荔枝为试验材料,研究了喷淋温度和喷淋流量对单层荔枝果实以及多层荔枝果实喷淋预冷降温特性的影响.试验结果表明:单层荔枝预冷,喷淋温度越低,冷却系数越大,7/8预冷时间越短,果实温度均匀性越差,选择(5±0.5)℃,能够保持较好预冷均匀性和较快的预冷速度;喷淋流量增大,冷却系数先增大后趋于稳定,7/8预冷时间先缩短后趋于平缓,与喷淋流量呈二次函数关系,果实温度均匀性提高,临界喷淋流量为5.9 L/(s·m2);多层荔枝堆叠时,果实离喷头越近,冷却系数越大,7/8预冷时间越短,果实温度均匀性越好,相对预冷时间与层数呈二次函数关系,临界预冷层数为4;研究结果为荔枝喷淋预冷装置的设计及单层与多层荔枝预冷应用提供参考.
AbstractList S375%TS255.3; 为掌握喷淋预冷工艺参数对荔枝降温特性的影响,搭建了荔枝喷淋预冷试验平台,以"淮枝"荔枝为试验材料,研究了喷淋温度和喷淋流量对单层荔枝果实以及多层荔枝果实喷淋预冷降温特性的影响.试验结果表明:单层荔枝预冷,喷淋温度越低,冷却系数越大,7/8预冷时间越短,果实温度均匀性越差,选择(5±0.5)℃,能够保持较好预冷均匀性和较快的预冷速度;喷淋流量增大,冷却系数先增大后趋于稳定,7/8预冷时间先缩短后趋于平缓,与喷淋流量呈二次函数关系,果实温度均匀性提高,临界喷淋流量为5.9 L/(s·m2);多层荔枝堆叠时,果实离喷头越近,冷却系数越大,7/8预冷时间越短,果实温度均匀性越好,相对预冷时间与层数呈二次函数关系,临界预冷层数为4;研究结果为荔枝喷淋预冷装置的设计及单层与多层荔枝预冷应用提供参考.
Author 陈明林
吕恩利
刘妍华
黄浩
郭嘉明
李鹏飞
虞新新
AuthorAffiliation 华南农业大学工程学院,广州,510642%华南农业大学工程基础教学与训练中心,广州,510642
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Lü Enli
Yu Xinxin
Huang Hao
Li Pengfei
Guo Jiaming
Liu Yanhua
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Keywords 温度
荔枝
喷淋预冷
流量
降温特性
果实
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