Efficient Corona Discharge Fog Collector: Multiple Mesh Electrodes with Electric Field Enhances Fog Harvesting

Li, Dingchen; Li, Chuan; Li, Jiawei; Yang, Wendi; Xiao, Menghan; Zhang, Ming; Yang, Yong; Yu, Kun; Pan, Yuan

doi:10.1007/s11090-022-10279-7

Cited by 9 publications

(15 citation statements)

References 22 publications

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“…The platform phenomenon is the result of the balance of electric field force, drag force, and resistance of charged droplets. 21,24,37 Figure 5b shows the collection efficiency with various coatings at 14 kV (a typical saturated voltage). It is surprising to find that the collection efficiency of HB/HL is the highest, reaching up to 93%.…”

Section: Collection By Bare Needle Electrodementioning

confidence: 99%

“…We define the platform value of collected water mass as “saturated collected water mass”, and its corresponding voltage as “saturated voltage”. The platform phenomenon is the result of the balance of electric field force, drag force, and resistance of charged droplets. ,, …”

Section: Collection By Bare Needle Electrodementioning

confidence: 99%

“…In terms of collection efficiency, the saturated collection efficiency is nearly the same as that of bare needle. According to our relevant researches, , this phenomenon is the result of equilibrium among the forces on the droplets, such as electric field force, drag force, and air resistance. Specifically, although the W-covered needle provides a higher concentration of charged particles and a stronger electric field under the same voltage so that charged droplets obtain higher speed under the action of the electric field, it also means that the air resistance of the droplets is higher.…”

Section: Collection By W Nanoparticle-covered Needle Electrodementioning

confidence: 99%

“…The collecting electrode is the attached object for fog droplets (especially the charged droplets) under the action of an electric field force and airflow, as shown in Figure b,c . The collection efficiency mainly depends on the product of aerodynamic efficiency (η a ) and deposition efficiency (η d ) .…”

Section: Introductionmentioning

confidence: 99%

“…The collecting electrode is the attached object for fog droplets (especially the charged droplets) under the action of an electric field force and airflow, as shown in Figure 1b,c. 37 The collection efficiency mainly depends on the product of aerodynamic efficiency (η a ) and deposition efficiency (η d ). 21 η a is the ratio of the number of droplets pointing to the collecting electrode and the number of droplets pointing to the collector f a r u p s t r e a m .…”

Section: ■ Introductionmentioning

confidence: 99%

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Advanced Fog Harvesting Method by Coupling Plasma and Micro/Nano Materials

Li,

Zhang

et al. 2024

ACS Appl. Mater. Interfaces

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Harvesting fog is a potential and effective way to alleviate the crisis of water resource shortage. A highly efficient and economical fog harvesting method has always been a global and common goal. Here, a promising fog harvesting method by coupling plasma and micro/nano materials is proposed, which can achieve 93% fog collection efficiency with consuming power of only 0.76 W/0.04 m 2 . The basic method is to utilize nanoparticles to decorate both the discharge electrode and the collecting electrode of the micro/nano electrostatic fog collector. For the discharge electrode, the nanoparticles can achieve an order of magnitude higher electric field strength and a 28.6% decrease in the operating voltage (14 kV decreases to 10 kV). For the collecting electrode, a novel composite structure of hydrophobic/hydrophilic (HB/HL) is proposed. The core advantage is the directional droplet transport at the junction of HB and HL caused by surface tension can adjust the accumulated droplets on the two sides, which avoids the droplet residue and mesh blockage in the general structure. This technology provides an innovative approach for the collection of microdroplets and a new design idea for the fog collector to deal with the water crisis.

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Section: Collection By Bare Needle Electrodementioning

confidence: 99%