Effective filtration area of a pleated filter bag in a pulse-jet bag house

Kim, Jeong Uk; Hwang, Jungho; Choi, Hyun Jin; Lee, Myong‐Hwa

doi:10.1016/j.powtec.2017.02.013

Cited by 38 publications

(5 citation statements)

References 14 publications

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“…The distinctive spatial arrangement of African shrimp fibers enhances their ability to collection fine particles, while also markedly increasing the flowfacing filtration area of the fiber bundle. Since the flow-facing filtration area of the fiber bundle is a crucial factor affecting its efficiency in collecting coarse particles [40,50,51], we hypothesize that the unique spatial arrangement of African shrimp fibers can improve their efficiency in collecting coarse particles. Coarse particles, unable to adhere to fibers via van der Waals forces, are collected by fiber bundles solely through physical screening.…”

Section: Fiber Arrangement-enhanced Filtration Areamentioning

confidence: 99%

Specialized spatially-arranged non-circular fibers enhance filtration performance of African shrimp (Atya gabonensis)

Liao,

Lyu,

Zhang

et al. 2024

Bioinspir. Biomim.

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African shrimp (Atya gabonensis) inhabit clear freshwaters, where the notably low concentration of food may pose a challenge to the efficacy of filter fibers on the chela for filter-feeding. Here, we investigate how the distinctive cross-sectional characteristics and spatial arrangement of the African shrimp's non-circular fibers contribute to the enhanced filtration performance of these specialized fibers. The unilateral thickening of the wall along the long axis of the elliptical cross-section of African shrimp fibers markedly enhances the filtration performance. The staggered and twisted arrangement of the fibers optimizes the surrounding flow field, achieving a favorable balance between pressure drop and collection efficiency, consequently improving their filtration performance in collecting fine particles (diameter: 2-10 μm). Moreover, the arrangement of the fibers substantially increases the effective flow-facing filtering area of the fiber bundles, thus facilitating their efficiency in collecting larger particles (diameter>10 μm). The unique fiber properties of the African shrimp offer novel insights for the design and optimization of new fiber-filtering robots, presenting a wide range of potential applications, such as marine in-situ resource extraction, medical filtration, and industrial filtration.

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Section: Fiber Arrangement-enhanced Filtration Areamentioning

confidence: 99%

Specialized spatially-arranged non-circular fibers enhance filtration performance of African shrimp (Atya gabonensis)

Liao,

Lyu,

Zhang

et al. 2024

Bioinspir. Biomim.

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“…31 Most of the previous works had been focussing on the effect of initial differential pressure on the pleat geometry, 1,4,5,12,13 without considering the dust loading effect which could affect the pleat geometry as well. Kim et al 2 and Lo et al 32 had considered the dust loading effect on the pleat geometry study on the pulse-jet cleaning filter application using the cylindrical cartridge filters. The dust loading effect on the HVAC panel filter's pleat geometry was studied to investigate the comprehensive filtration performance in the current work.…”

Section: Pressure Differential Across Dust Cakementioning

confidence: 99%

“…Théron et al 1 investigated a lab-scale pleated fibrous filter and summarized that the pressure differential could be reduced with a pleated shape toward a flat geometry. However, the filter media are often pleated to maximize the effective filtration area of a restricted filter volume, 2,3 but the pleat geometry could vary the filtration performance. An ideal V-shaped pleat geometry is required to be maintained in order to avoid an increasing effect on the filter pressure differential.…”

Section: Introductionmentioning

confidence: 99%

The study of pleat geometry on the air filtration performance

Yit

Chew

Yau

2022

Indoor and Built Environment

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Fibrous filter media is typically pleated to increase effective filtration area, but the pleat geometry could influence the filtration performance. The previous work focused on the pleat geometry numerically and mainly limited to the cartridge filters with small pleats while the study on the heating, ventilation and air-conditioning (HVAC) filters is limited. In this study, a full-size pleated fibrous air filter was used to investigate the effect of pleat geometry on the filtration performance experimentally with reference to the air filter test standard, ISO 16890. The pleat geometry was found to have an insignificant effect on the filtration efficiency. The optimum pleat ratios are 13.08–14.57 for minimum initial pressure differential and 9.96–11.75 for optimal specific resistance coefficient of dust cake, [Formula: see text]. The overall optimum pleat ratio range is 13.08–14.57 to obtain an optimal filtration performance at low initial pressure differential and low [Formula: see text] while attaining a high dust holding capacity. The findings of current work were obtained by a comprehensive study on the filtration performance including the clean and dust-loaded states of the HVAC filters, at the actual operating velocity and could be directly applied in the actual filter depth selection based on the AHU’s space limitation.

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“…Thirdly, the filter bag is a flexible film without a skeleton in order to facilitate the finite element analysis. Finally, the filter bag is in a clean state that the permeability variations of the filter media affected by dust are not considered [27,35]. Figs.…”

Section: Geometric Model and Meshingmentioning

confidence: 99%