Filter efficiency and leak testing of returned ISS bacterial filter elements (BFEs) after 2.5 years of continuous operation

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dc.creatorGreen, Robert
dc.creatorAgui, Juan
dc.creatorBerger, Gordon
dc.creatorVijayakumar, Rajagopal
dc.creatorPerry, Jay
dc.date.accessioned2016-07-28T19:19:43Z
dc.date.available2016-07-28T19:19:43Z
dc.date.issued2016-07-10
dc.descriptionUnited States
dc.descriptionNASA GRC
dc.descriptionNASA Glenn Research Center
dc.descriptionUniversities Space Research Association
dc.descriptionAERFIL
dc.descriptionNational Aeronautics and Space Administration
dc.description510
dc.descriptionICES510: Planetary and Spacecraft Dust Properties and Mitigation Technologies
dc.descriptionVienna, Austria
dc.descriptionThe 46th International Conference on Environmental Systems was held in Vienna, Austria, USA on 10 July 2016 through 14 July 2016.
dc.descriptionRobert D. Green, NASA Glenn Research Center, USA
dc.descriptionJuan H. Agui, NASA Glenn Research Center, USA
dc.descriptionGordon M. Berger, Universities Space Research Association, USA
dc.descriptionR. Vijayakumar, Aerfil LLC, USA
dc.descriptionJay L. Perry, NASA Marshall Space Flight Center, USA
dc.description.abstractThe air quality control equipment aboard the International Space Station (ISS) and future deep space exploration vehicles provide the vital function of maintaining a clean cabin environment for the crew and the hardware. This becomes a serious challenge in pressurized space compartments since no outside air ventilation is possible, and a larger particulate load is imposed on the filtration system due to lack of sedimentation. The ISS Environmental Control and Life Support (ECLS) system architecture in the U.S. Segment uses a distributed particulate filtration approach consisting of traditional High-Efficiency Particulate Adsorption (HEPA) filters deployed at multiple locations in each U.S. Segment module; these filters are referred to as Bacterial Filter Elements, or BFEs. As more experience has been gained with ISS operations, the BFE service life, which was initially one year, has been extended to 2-5 years, dependent on the location in the U.S. Segment. In our previous work, we developed a test facility and test protocol for leak testing the ISS BFEs. For this work, we will present results of leak testing of a sample set of returned BFEs with a service life of 2.5 years, along with efficiency and pressure drop measurements. The results can potentially be utilized by the ISS Program to ascertain whether the present replacement interval can be maintained or extended to balance the on-ground filter inventory with extension of the lifetime of ISS beyond 2020. These results can provide meaningful guidance for particulate filter designs under consideration for future deep space exploration missions.
dc.format.mimetypeapplication/pdf
dc.identifier.otherICES_2016_281
dc.identifier.urihttp://hdl.handle.net/2346/67640
dc.language.isoeng
dc.publisher46th International Conference on Environmental Systems
dc.subjectBacterial Filter Element (BFE)
dc.subjectHEPA filter
dc.subjectparticulate filtration
dc.titleFilter efficiency and leak testing of returned ISS bacterial filter elements (BFEs) after 2.5 years of continuous operation
dc.typePresentation

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