Tug-of-War-Inspired Bio-Based Air Filters with Advanced Filtration Performance

2021 ◽  
Vol 13 (7) ◽  
pp. 8736-8744
Author(s):  
Xin Fan ◽  
Lingshuang Rong ◽  
Lushi Kong ◽  
Yuxin Li ◽  
Junrong Huang ◽  
...  
Keyword(s):  
Air Filters ◽  
Filtration Performance

Comparison of filtration performance of commercially available automotive cabin air filters against various airborne pollutants

2019 ◽  
Vol 161 ◽  
pp. 106272 ◽  
Author(s):  
Ki Joon Heo ◽  
Jung Woo Noh ◽  
Byung Uk Lee ◽  
Yeonsang Kim ◽  
Jae Hee Jung
Keyword(s):  
Air Filters ◽  
Airborne Pollutants ◽  
Filtration Performance

Nano-dry-salt deposition on electret nonwoven confers anticoronaviral effect while retaining aerosol filtration performance

2021 ◽  
Author(s):  
Dae Hoon Park ◽  
Jisoo Choi ◽  
Amin Piri ◽  
Jungho Hwang ◽  
Jeong Hoon Byeon
Keyword(s):  
Air Filters ◽  
Design Concepts ◽  
Salt Deposition ◽  
Filtration Performance ◽  
Aerosol Filtration ◽  
Safe By Design

Safe-by-design concepts for anticoronaviral functions are important in the production of air filters, face masks, and touch substrates because these interventions may be effective in allowing continued socioeconomic activity and...

scholarly journals Electret Media for HVAC Filtration Applications

2003 ◽  
Vol os-12 (4) ◽  
pp. 1558925003os-12 ◽  
Author(s):  
David L. Myers ◽  
B. Dean Arnold
Keyword(s):  
Environmental Factors ◽  
Field Studies ◽  
General Category ◽  
Media Technology ◽  
Air Filters ◽  
The Past ◽  
Filtration Performance ◽  
Fiber Size ◽  
The Media ◽  
Media Types

Air filters produced with charged, or electret, media for HVAC filtration applications have gained significant market share and acceptance over the past few years. While these filters provide the advantage of high initial efficiency and low pressure drop, there are concerns about their ability to maintain efficiency in service. Furthermore, there is a tendency to classify all electret media in the same general category without any consideration of media structure, fiber size, and charging technique. Current research suggests that a variety of factors influence the loss of efficiency in use including humidity, exposure to certain chemicals, aging, temperature, and etc. While this is true of some charged media, the effect of environmental factors on filtration performance is highly dependent upon the media technology itself. This paper provides an overview of current electret media types detailing media structure and charging techniques. Fundamental impact of environmental factors on filtration performance is presented along with field studies detailing in-use performance of filterers manufactured with charged media.

Oil-treated pleated fibrous air filters for motor vehicle engine intake application

2019 ◽  
Vol 234 (2-3) ◽  
pp. 702-713
Author(s):  
Ajay Kumar Maddineni ◽  
Dipayan Das ◽  
Ravi Mohan Damodaran
Keyword(s):  
Pressure Drop ◽  
Motor Vehicle ◽  
Life Time ◽  
Filtration Efficiency ◽  
Air Filters ◽  
Air Filter ◽  
Filtration Performance ◽  
Vehicle Engine ◽  
Air Intake ◽  
The Difference

In this work, oil-treated pleated fibrous air filters were developed, characterized, and evaluated for motorcycle engine intake application. The effect of pleat geometry on the filtration performance was examined. Pleat pitch and pleat height were found to play important roles in determining the filtration efficiency, pressure drop, and dust holding capacity. A pleated fibrous filter prepared with optimum levels of pleat pitch and pleat height showed the best filtration performance. The treatment to the pleated filter by viscous oil yielded remarkably higher dust holding capacity and filtration efficiency, both at cleaned and clogged conditions. A statistical analysis revealed that the weight of oil played a significant role in deciding the filtration performance. The oil-treated pleated filter was installed in a commercial air intake system and its filtration performance was assessed. The filter element displayed a significant delay in evolution of pressure drop during dust loading as compared to the untreated one. However, the difference in filtration efficiency between the oil-treated and untreated filter elements was not found to be too high. Nevertheless, both of them met the standard filtration performance as per the best practices followed by the automotive industry. Overall, the oil treatment to cellulosic filters was found to be highly advantageous for motorcycle application. Practical implications of such air filter system were discussed in terms of service life, fuel consumption, and CO2 emission during filter life time.

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