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- 저자 : Huizhi Wu (검색결과 2 건)
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Huizhi Wu,Qian Geng,Yonghan Li,Yuqian Song,Jiaqi Chu,Rong Zhou,Xin Ning,Senjie Dong,Ding Yuan 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.114 No.-
Here, a multifunctional poly (lactic acid)/copper-based metal–organic framework (PLA/CuMOF) degradablecomposite membrane featuring superior antibacterial and self-cleaning properties was fabricated viaa simple electrospinning process for high- efficiency filtration/separation. Benefiting from the decrease offiber diameter, the improved surface roughness and the surface charge of CuMOF, PLA/CuMOF fibrousmembrane achieved excellent capture ability for ultra-fine particles and superb purification capabilityfor real PM2.5 smoke. The differences of filtration capacity between PLA membrane and PLA/CuMOF membranewas further explored using analogue simulation with dynamic particle capture and airflow fielddistribution. Impressively, PLA/CuMOF fibrous membrane combines robust self-cleaning ability, effectiveantibacterial effect, and thermal management capability. Moreover, owing to the special selective wettabilityand chemical stability, PLA/CuMOF membrane possessed the stable oil–water separation performanceunder harsh environment (e.g., high acid, alkali, and salt). This degradable multifunctionalfiltration/separation fibrous membrane emerges a broad application prospect ranging from environmentalgovernance, industrial security to personal protection.
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Experimental Study on Spray Characteristics of The Internal Impinging Nozzle
( Jiachen Zhai ),( Zongjie Hu ),( Wei Xie ),( Huizhi Chen ),( Cong Xue ),( Yufeng Wang ),( Zhijun Wu ) 한국액체미립화학회 2017 한국액체미립화학회 학술강연회 논문집 Vol.2017 No.-
The internal impinging nozzle with a bluff body set inside can form a periodic oscillating spray, which is a novel approach of atomization. In this paper, the flow distribution characteristics of the spray are studied with low-pressure water as the medium. Meanwhile, the characteristics of spray cone angle, oscillating frequency, spatial distribution of droplet velocity and particle size are also studied with high-speed Schllieren technique and Malwen particle size analyzer. The results demonstrate that with the increase of the injection pressure, the spray cone angle is almost constant, while the spray oscillating frequency increases gradually, which is tantamount to the variation trend of axial velocity and radial velocity of the droplet. When the injection pressure is elevated from 0.16MPa to 0.18MPa, at the same position, the increase of droplet axial velocity distinctly reaches a maximum. Furthermore, with the development of the spray, the particle size decreases accordingly, and the velocity of the well atomized area near the spray symmetrical center axis is also gradually reduced. The farther away from the nozzle outlet, the more pronounced the symmetry of the spatial distribution of the axial velocity and radial velocity becomes. Moreover, when the injection pressure reaches 0.16MPa, at the position 250mm away from the outlet, the particle size achieves a minimum, and the spray obtains a stable distribution, which is rarefied and uniform in the middle area, while generous on both sides. With the injection pressure increasing to 0.18MPa, the flow of the well atomized area near the spray symmetrical center axis reaches its maximum, and that of the area farthest away from the symmetry center is also raised by degrees as the injection pressure increases.
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