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Characterization of Dirt Holding Capacity of Microfiber-Based Filter Media Using Thermal Impedance Spectroscopy by Wenhua H. Zhu; Amulya Poudyal; Phillip M. Martin; Bruce J. Tatarchuk is a Engineering article available to read on EtoBox.

What is Characterization of Dirt Holding Capacity of Microfiber-Based Filter Media Using Thermal Impedance Spectroscopy about?

With the development of new classes of high-speed vessels like LCAC, which are expected to ingest high amounts of salt particulates, it is of vital importance to develop a new class of filtration media which can meet this requirement. A microfibrous filter media embedded with nanofibers was thus developed using a nanofiber flocked suspension with a microfibrous support created using traditional wet-lay papermaking methods. While the pressure drop is normally used as the conventional parameter to predict service-life of the filter media, it does not give a proper indication of filter service life. Therefore, a novel thermal impedance technique was applied in this work to characterize the filtration media using thermal parameters via a heat pulse excitation signal. The transient response for the phase lag of temperature was observed because heat transfer occurs during the air flow across the filtration media. The related thermal parameters were obtained through a thermal equivalent circuit model and a nonlinear least-squares fitting algorithm. The thermal impedance method can be used as a filter media diagnostic tool to obtain useful parameters which can be utilized to regenerate fil

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Author

Wenhua H. Zhu; Amulya Poudyal; Phillip M. Martin; Bruce J. Tatarchuk

Publisher

American Chemical Society; American Chemical Society (ACS) (ISSN 1944-8244)

Published

2020

Language

EN

Field

Engineering (Physical Sciences)