摘要
为研究双侧吸气式增氧机射流器主要结构参数与动力效率的关系,应用正交试验方法,以增氧动力效率E为主要性能指标,选取位置系数R、面积比m、喷嘴收缩角a、喉管长径比β为增氧机射流器主要结构参数,对射流增氧机进行了清水充氧试验。结果表明:各主要结构参数影响增氧动力效率E的主次排序为位置系数、面积比、喷嘴收缩角、喉管长径比;最佳结构参数组合为R=0,m=4,a=30°,β=10。位置系数与面积比之间存在比较显著的交互效应,其显著性低于两者独立作用的水平,高于喷嘴收缩角与喉管长径比的独立作用水平,其他参数之间的交互效应不明显。
Orthogonal experiments were carried out to study the oxygen transfer performance of the dual laterolog aspirating aerator. The work has been focused on the improvement of oxygen-transfer power efficiency with respect to the varying of the aerator＇ s major structural parameters. Effects of single and interaction among them of the four factors on oxygen-transfer power efficiency were investigated respectively. Meanwhile, optimal combination of the four factors on oxygen-transfer power efficiency was presented. It showed an appropriate combination of different factors may improve oxygen-transfer power efficiency effectively. The following summarized the detailed contributions that have been made in the research： （1）Ranking of main structural parameters impacting power efficiency is as follows： the location coefficient, section ratio, nozzle angle and throat-pipe aspect ratio. （2）Optimized structural parameters that were found in the research are the location coefficient R = 0; section ratio m = 4; nozzle angle a = 30°; pipe aspect ratio β = 10. （3）There is significantly interactive effect between location coefficient and section ratio.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2008年第8期70-73,共4页
Transactions of the Chinese Society for Agricultural Machinery
基金
淮海工学院自然科学基金资助项目(项目编号:2007003)
关键词
增氧机
双侧吸气
动力效率
结构参数
试验
Aerator, Dual aspirator, Power efficiency, Structural parameters, Experiment
