Title: Immersion system oil filtration improvement under cyclic pumping

Authors: Maher Shehadi

Addresses: School of Engineering Technology, Purdue University, USA

Abstract: Efficient oil filtration in immersion systems is essential for preserving equipment integrity and coating longevity. However, many systems operate without dynamic filtration control, permitting contaminant buildup and performance degradation. This study evaluates the influence of cyclic pumping on filtration efficiency in an oil-based rust prevention immersion system, aiming to optimise ON/OFF intervals for improved particulate capture and reduced maintenance. A controlled experimental setup introduced ISO dust particles into the system, with oil samples collected downstream of the filter during various pump cycles. Filtration performance was quantified via particle size distribution and pressure differential analysis across the filter. Shorter cycles enhanced removal of particles >10 μm, lowered pressure drop, and extended filter life. In contrast, longer cycles facilitated bypass of <10 μm particles, accelerating clogging and reducing efficiency. Findings demonstrate that optimising pump cycling frequency significantly influences filtration dynamics. Future research will address adaptive control, real-time diagnostics, and long-term system sustainability.

Keywords: immersion system; oil filtration; filter efficiency; intermittent pumping; particle size detection; corrosion resistance; surface preparation; coating.

DOI: 10.1504/IJEDPO.2025.152111

International Journal of Experimental Design and Process Optimisation, 2025 Vol.8 No.1/2, pp.36 - 51

Received: 01 Nov 2024
Accepted: 01 Apr 2025
Published online: 09 Mar 2026 *

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