| 摘要: |
| 【目的】为解决保鲜运输车厢用加湿方式存在的成本高、效率低等问题，设计超声波加湿装置，搭建保鲜运输用湿度调控试验平台。【方法】设计运输车厢用超声波雾化加湿系统试验平台，并通过改变回风道风速、隔板开孔率、进气口缝隙和导向板角度等，研究各因素对超声波加湿时间的影响，分析超声波加湿的湿度调节特性。【结果】针对特定的车厢容积，导向板角度对加湿时间影响较小；所需加湿时间随回风道风速和进气口缝隙的增大而增加，而随隔板开孔率的增大呈先增加后减少的趋势；回风道风速、进气口缝隙和隔板开孔率对加湿时间的影响程度依次增大；回风道风速为8 m/s、隔板开孔率为16.12%、进气口缝隙为1.5 cm时，加湿时间最短，为212 s。【结论】设计的超声波加湿装置对保鲜运输车厢用加湿装置的优化设计具有一定的参考价值。 |
| 关键词: 保鲜运输车 加湿装置 超声波 加湿时间 优化设计 |
| DOI： |
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| 基金项目:国家自然科学基金项目（31101363）；广东省科技计划项目（2012B020313007）；广东省扶持农业机械化发展专项（粤农计［2011］150号） |
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| Design and test of ultrasonic humidifying system for fresh-keeping transportation |
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GUO Jiaming, LÜ Enli, LU Huazhong
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South China Agricultural University
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| Abstract: |
| 【Objective】Ultrasonic atomized humidifying equipment was designed and humidifying test-bed was established to reduce the cost and improve the efficiency of existing humidifying systems.【Method】The influence of the airflow velocity of the air duct,ratio of clapboard open area,the air inlet gap and the angle of the guide plate on the humidifying time was study.Humidity regulation characteristics of the built ultrasonic humidifying system were analyzed.【Result】The influence of the angle of guide plate on the humidifying time was less important.The humidifying time increased as the airflow velocity of the air duct and air inlet gap increased.The humidifying time increased and then decreased as the ratio of clapboard open area increased.The degrees of the influence on humidifying time by airflow velocity of the air duct,the inlet gap and ratio of clapboard open area were in an increasing order of airflow velocity of the air duct
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| Key words: fresh-keeping transportation truck humidifying system ultrasonic humidifying time optimization design |
