| 龙眼压差通风预冷装置风速控制与能耗分析 |
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| 引用本文： | 闫国琦,杨洲,马征.龙眼压差通风预冷装置风速控制与能耗分析[J].农业机械学报,2009,40(3):125-129. |
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| 作者姓名： | 闫国琦 杨洲 马征 |
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| 作者单位： | 1. 华南农业大学南方农业机械与装备关键技术省部共建教育部重点实验室,广州,510642
2. 惠州工业科技学校机电工程系,惠州,516000 |
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| 基金项目： | 国家自然科学基金，广东省科技计划项目 |
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| 摘 要： | 针对龙眼的物理特性,设计了一套龙眼压差通风预冷试验装置.根据果蔬压差预冷7/8时间特性,通过试验得到了龙眼包装箱压差与风速关系以及异步电动机频率与风速关系.进一步研究龙眼压差预冷装置能耗与风速关系可知,对于龙眼果实,较小的风速预冷能耗较小,预冷时间较长;当预冷时间按要求设定时,在风机允许范围内控制风速按一定规律递增,直到龙眼终止温度,可以在设定时间内完成龙眼预冷,且能耗最小.
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| 关 键 词： | 龙眼 压差通风预冷 能耗 风速 变频调速 试验 |
Control and Energy Analysis in Forced-air Pre-cooling Device of Longan |
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| Yan Guoqi,Yang Zhou,Ma Zheng.Control and Energy Analysis in Forced-air Pre-cooling Device of Longan[J].Transactions of the Chinese Society of Agricultural Machinery,2009,40(3):125-129. |
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| Authors: | Yan Guoqi Yang Zhou Ma Zheng |
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| Institution: | 1.Key Laboratory of Key Technology on Agricultural Machine and Equipment;Ministry of Education;South China Agricultural University;Guangzhou 510642;China 2.Department of Mechanical Electrical Engineering;Huizhou Industry Science and Technology School;Huizhou 516000;China |
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| Abstract: | According to the characteristics of longan,a forced-air pre-cooling device of longan for test was designed.Based on 7/8 time of pre-cooling,the relationship between air velocity and pressure drop or voltage frequency was obtained in test,and furthermore,the relationship between air velocity and energy was studied.The results show that the pre-cooling fan works more slowly,but costs a long time with a lower level of energy cost.In reality,a less time consuming method was needed.The method is controlling the ... |
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| Keywords: | Longan Forced-air pre-cooling Energy costing Air velocity Frequency control Experiment |
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