Design and Optimization of Centralized Pneumatic Fertilizer Transporting System for Deep Fertilization Device in Paddy Field

Xiantao Zha; Guozhong Zhang; Yuhang Han; Jianwei Fu; Yong Zhou

doi:10.5293/IJFMS.2021.14.3.309

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자료유형: 학술저널

저자정보: Xiantao Zha (Huazhong Agricultural University) Guozhong Zhang (Huazhong Agricultural University) Yuhang Han (Huazhong Agricultural University) Jianwei Fu (Huazhong Agricultural University) Yong Zhou (Huazhong Agricultural University)

저널정보: 한국유체기계학회 International Journal of Fluid Machinery and Systems International Journal of Fluid Machinery and Systems Vol.14 No.3

발행연도: 2021.9

수록면: 309 - 321 (13page)

DOI: 10.5293/IJFMS.2021.14.3.309

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To improve the airflow distribution consistency of each branch in the pneumatic fertilizer transportation system, so as to reduce the influence of airflow instability on the uniformity and stability of fertilizer transportation, as well as the energy waste in the process of pneumatic fertilizer transportation, a centralized pneumatic fertilizer transportation system for deep fertilization device was designed. Through theoretical calculation, the needed air flow rate, airflow speed and fertilizer pipe diameter of the system were obtained, and the fan was selected. Based on the Fluent simulation and bench tests, the influence of three air distribution method of placing fan at the end of main duct, placing fan in the middle of main duct and centralized air distribution on the airflow velocity and consistency of each branch was analyzed. The results showed that the airflow consistency of each branch in the centralized air distribution method was the best. Taking the air velocity at the outlet of each branch and its variation coefficient as the evaluation index, single factor and orthogonal simulation tests was carried out to optimize the structural parameters of centralized air distribution device. The simulation results showed that the primary and secondary factors affecting the air distribution consistency were: A (sidewall inclination angle), B (branch diameter), C (branch distance), A×B (interaction between A and B), B×C (interaction between B and C), A×C (interaction between A and C), and all the factors and their interactions had significant effects. The best parameter combination was sidewall inclination angle 15°, branch diameter 32 ㎜, branch distance 43 ㎜. With the combination, the variation coefficient of airflow velocity was 0.27% in simulation test and 1.23% in bench test. This research optimized the structure and parameters of pneumatic fertilizer transporting system, and provided references for the design and optimization of pneumatic fertilization and seeding device.

#Paddy field #pneumatic fertilizer transporting #centralized air distribution #CFD method

참고문헌 (29)

참고문헌 신청

Wang, W / 2010 / Study on fertilization effect and fertilizer use efficiency of rice in Hubei Province / Plant Nutrition and Fertilizer Science 16(2):289~295

WANG, X / 2002 / Soil Nitrogen Transport Characteristics under Different Fertilizer Application Practice / Chinese Journal of Soil Science, 33(3):202~206

Yang, S / 2013 / Nitrogen Loss from Paddy Field with Different Water and Nitrogen Managements in Taihu Lake Region of China / Communications in Soil Science and Plant Analysis, 44(16):2393~2407

Wu, M / 2017 / Nitrogen Fertilizer Deep Placement for Increased Grain Yield and Nitrogen Recovery Efficiency in Rice Grown in Subtropical China / Frontiers in Plant Science 8

Chen, X / 2014 / Experiment of synchronous side deep fertilizing technique with rice hill-drop drilling / Transactions of the Chinese Society of Agricultural Engineering 30(16):1~7

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