| 摘要: |
| 【目的】研究厢内管道式超声波加湿装置的工作特性，提高保鲜运输加湿系统的工作性能，改善保鲜环境的湿度均匀性。【方法】设计了一套管道式加湿装置，搭建保鲜运输加湿系统试验平台并研究水雾输送管管径(12.5，19.0和25.4 mm)、开孔数(2，4，6和8孔)、水雾输送风机电压(12，18和24 V)、回风道风速(4，6和8 m/s)对加湿特性的影响。【结果】水雾输送管管径、回风道风速、水雾输送管开孔数、水雾输送风机电压对加湿均匀性的影响程度依次减小；在水雾输送管管径为25.4 mm、回风道风速为4 m/s、水雾输送管开孔数为4孔、水雾输送风机电压为24 V时，厢内相对湿度标准差最低，为2.92；在回风道风速为8 m/s、水雾输送风机电压为24 V、水雾输送管开孔数为8孔、水雾输送管管径为25.4 mm时，加湿速率最高，加湿时间为372 s。【结论】综合考虑确定水雾输送管管径25.4 mm、回风道风速4 m/s、水雾输送管开孔数4孔、水雾输送风机电压24 V为保鲜运输用管道式加湿装置的最优参数组合。 |
| 关键词: 保鲜运输 加湿装置 参数优化 湿度均匀性 |
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| 基金项目:国家科技支撑计划项目子课题（2013BAD19B01-1-3）；广州市珠江科技新星专项（2014J2200070） |
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| Design and experiment of pipeline humidifying device for fresh-keeping transportation |
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FANG Si-zhen,GUO Jia-ming,LI Ya-hui,et al
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| Abstract: |
| 【Objective】This study investigated the operating characteristics of pipeline humidifying device to improve the performance of humidification system and the humidity uniformity of preservation environment.【Method】A pipeline humidifying device was designed and experimental platform for fresh keeping transportation humidification system was established.The effects of pipe diameter (12.5,19.0 and 25.4 mm), number of holes (2,4,6 and 8),voltage of fan (12,18 and 24 V),and speed of air duct(4,6 and 8 m/s) on the wetting characteristics were also analyzed.【Result】The effects of pipe diameter,number of holes,voltage of fan,and speed of air duct on humidity uniformity were in the order of pipe diameter>number of holes>voltage of fan>speed of air duct.When pipe diameter was 25.4 mm,speed of air duct was 4 m/s,number of holes was 4,and voltage of fan was 24 V,the lowest value of humidification uniformity of 2.92 was obtained.The highest humidifying rate was obtained when speed of air duct was 8 m/s,voltage of fan was 24 V,number of holes was 8,pipe diameter was 25.4 mm and humidifying time was 372 s.【Conclusion】Based on comprehensive consideration,optimal parameters of pipeline humidifying device for fresh-keeping transportation were:pipe diameter 25.4 mm,speed of air duct 4 m/s,number of holes 4,and voltage of fan 24 V. |
| Key words: fresh-keeping transportation humidifying device parameter optimization humidity uniformity |
