Assessment of Non-uniform Flow Influence on an Air Handling Unit Filters Efficiency and Life Cycle [Conference Paper] - EHESP - École des hautes études en santé publique Access content directly
Journal Articles Environmental Science and Engineering Year : 2023

Assessment of Non-uniform Flow Influence on an Air Handling Unit Filters Efficiency and Life Cycle [Conference Paper]

Abstract

The flow inside exhaust compartment of a full scale air handling unit is studied experimentally and numerically to characterize the flow non-uniformity, induced by the eccentric position of exhaust air inlet, and to evaluate their impact on the filters’ performances. It is about 2 bag filters installed side by side but not centered to the inlet. To predict flow structure, a 2D CFD model is developed using Ansys Fluent 14.5 and validated by pressure drop measurement and by comparison of fluorescein concentration injected upstream and collected on each filter. Results show that the volume flow rate is unequally distributed, in addition to significant flow disturbances and presence of backflow regions. This leads to staggered clogging of filter 1 reducing its permeability but not enough to stabilize the flow. Simulation with an extended domain including a centered inlet shows remarkable improvement of the flow distribution and pressure drop decrease. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
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Dates and versions

hal-04250123 , version 1 (19-10-2023)

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Ala Bouhanguel, Gaétan Pavard, Aurélie Joubert, Pierre Le Cann, Yves Andres. Assessment of Non-uniform Flow Influence on an Air Handling Unit Filters Efficiency and Life Cycle [Conference Paper]. Environmental Science and Engineering, 2023, Environmental Science and Engineering, pp.2069-2072. ⟨10.1007/978-981-19-9822-5_219⟩. ⟨hal-04250123⟩
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