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dc.creatorIzenson, Michael G.
dc.creatorChen, Weibo
dc.creatorPhillips, Scott
dc.creatorChepko, Ariane
dc.creatorBue, Grant
dc.creatorQuinn, Gregory
dc.date.accessioned2014-10-21T15:34:29Z
dc.date.available2014-10-21T15:34:29Z
dc.date.issued2014-07-13
dc.identifier.isbn978-0-692-38220-2
dc.identifier.otherICES-2014-051
dc.identifier.urihttp://hdl.handle.net/2346/59690
dc.descriptionTucson, Arizona
dc.descriptionThe 44th International Conference on Environmental Systems was held in Tuscon, Arizona, USA on 13 July 2014 through 17 July 2014.
dc.descriptionMichael G. Izenson, Creare, USA
dc.descriptionWeibo Chen, Creare, USA
dc.descriptionScott Phillips, Creare, USA
dc.descriptionAriane Chepko, Creare, USA
dc.descriptionGrant Bue, NASA Lyndon B. Johnson Space Center, USA
dc.descriptionGregory Quinn, UTC Aerospace Systems, USA
dc.description.abstractThe Space Evaporator-Absorber-Radiator (SEAR) is a nonventing thermal control subsystem that combines a Space Water Membrane Evaporator (SWME) with a Lithium Chloride Absorber Radiator (LCAR). The LCAR is a heat pump radiator that absorbs water vapor produced in the SWME. Because of the very low water vapor pressure at equilibrium with lithium chloride solution, the LCAR can absorb water vapor at a temperature considerably higher than the SWME, enabling heat rejection sufficient for most EVA activities by thermal radiation from a relatively small area radiator. Prior SEAR prototypes used a flexible LCAR that was designed to be installed on the outer surface of a portable life support system (PLSS) backpack. This paper describes a SEAR subsystem that incorporates a very compact LCAR. The compact, multifunctional LCAR is built in the form of thin panels that can also serve as the PLSS structural shell. We designed and assembled a 2 ft2 prototype LCAR based on this design and measured its performance in thermal vacuum tests when supplied with water vapor by a SWME. These tests validated our models for SEAR performance and showed that there is enough area available on the PLSS backpack shell to enable rejection of metabolic heat from the LCAR. We used results of these tests to assess future performance potential and suggest approaches for integrating the SEAR system with future space suits.en_US
dc.format.mimetypeapplication/pdf
dc.language.isoengen_US
dc.publisher44th International Conference on Environmental Systemsen_US
dc.titlePerformance of a Multifunctional Space Evaporator- Absorber-Radiator (SEAR)en_US
dc.typePresentationen_US


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