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Indoor Air

Title:		Exploring the potential of electrostatic precipitation as an alternative particulate matter filtration system in aircraft cabins
Author(s):		Pellegrin B; Berne P; Giraud H; Roussey A;
Address:		"Univ. Grenoble Alpes, CEA, Liten, DTNM, Grenoble, France"
Journal Title:		Indoor Air
Year:		2022
Volume:		32
Issue:		2
Page Number:		e12990 -
DOI:		10.1111/ina.12990
ISSN/ISBN:		1600-0668 (Electronic) 0905-6947 (Linking)
Abstract:		"On most modern airliners, cabin air pressurization, heating, and renewal are mainly achieved using air supplied from the gas turbine engines during flight. This air intake impairs the motors yield and needs to be conditioned, leading to energy overconsumption. Recent advances in thermal management enable aircraft manufacturers to reduce further the intake airflow needed to maintain cabin temperature at high altitude. Nevertheless, for lower air renewal rates, an appropriate air filtration system will be needed to maintain acceptable air quality in the cabin. In this context, Clean Sky 2 Joint Undertaking (CS2JU) project EC2S (Environment Control Secondary System) aims at developing an integrated filtration system to be implemented in existing cabin air management systems (so-called environmental control system-ECS). The EC2S unit will include three filtration units addressing separately volatile organic compounds (VOCs), CO(2) , and particulate matter (PM). Circulated air in the ECS is conventionally filtered on pleated HEPA filters that generate substantial pressure drop. Since the EC2S VOCs and CO(2) filtration units would generate additional pressure drop in the ECS system, electrostatic precipitation is foreseen as a low flow resistance alternative for PM removal. This paper reports the development and performance assessment of a two-stage electrostatic precipitator (ESP) designed for aircraft recirculated air filtration. The ESP prototype presents high single-pass particle collection rates (i.e., over 90% for airborne particles with an aerodynamic diameter of 0.5 mum or larger), low-pressure drop (i.e., 4 Pa at nominal flowrate), and a limited ozone generation rate (i.e., below 8 mg h(-1) )"
Keywords:		"*Air Pollutants/analysis *Air Pollution, Indoor/analysis Aircraft Filtration Particulate Matter/analysis Static Electricity aircraft air quality management electrostatic precipitation ozone generation spectral collection efficiency;"
Notes:		"MedlinePellegrin, Bastien Berne, Philippe Giraud, Herve Roussey, Arthur eng Research Support, Non-U.S. Gov't England 2022/03/01 Indoor Air. 2022 Feb; 32(2):e12990. doi: 10.1111/ina.12990"