CO2 Control in Space Station and Space Suit by Novel Facilitated Transport Membranes

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dc.creatorOkada, Osamu
dc.creatorTeramoto, Msaaki
dc.creatorHanai, Nobuaki
dc.creatorMiyata, Jyunya
dc.creatorKiyohara, Yasato
dc.creatorSakurai, Masato
dc.date.accessioned2016-07-28T18:24:01Z
dc.date.available2016-07-28T18:24:01Z
dc.date.issued2016-07-10
dc.descriptionJapan
dc.descriptionRenaissance Energy Research Corporation
dc.descriptionJapan Aerospace exploration Agency
dc.description302
dc.descriptionICES302: Physio-chemical Life Support- Air Revitalization Systems -Technology and Process Development
dc.descriptionVienna, Austria
dc.descriptionOsamu Okada, Renaissance Energy Research Corporation, Japan
dc.descriptionTsutomu Nonouchi, Renaissance Energy Research Corporation, Japan
dc.descriptionNobuaki Hanai, Renaissance Energy Research Corporation, Japan
dc.descriptionJunya Miyata, Renaissance Energy Research Corporation, Japan
dc.descriptionYasato Kiyohara, Renaissance Energy Research Corporation, Japan
dc.descriptionMasaaki Teramoto, Renaissance Energy Research Corporation, Japan
dc.descriptionMasato Sakurai, Japan Aerospace Exploration Agency, Japan
dc.descriptionThe 46th International Conference on Environmental Systems was held in Vienna, Austria, USA on 10 July 2016 through 14 July 2016.
dc.description.abstractFor the CO2 control in the space station, membrane separation is attractive as it is a simple continuous system with low energy consumption and no capacity limit　as CO2 uptake at the feed side of the membrane and release at the permeate side occur simultaneously. In order to apply membranes for space use, development of membranes with extremely high CO2 selectivity over O2 and N2 is required for minimizing the O2 and N2 losses. In our previous paper　(ICES - 2014), we reported novel CO2 selective facilitated transport membranes. These are gel-type membranes supported on microporous membranes. The CO2 permeance and CO2/N2 selectivity measured by the sweep gas method were favorably compared to those reported so far. In the present study, a 0.75% CO2/99.3% O2 mixture was mainly used as a feed gas, and the membrane performance was evaluated by the vacuum mode method where the permeate side PS was kept at low pressures at room temperature without sweep gas. We found that PS was very important factor, which influences the membrane performance. As PS increased, both CO2 and O2 permeances increased with CO2/O2 selectivity higher than 4000. The CO2 permeance was 1.2E4 Ncm3/(cm2 s cmHg) at 75% of relative humidity. The CO2/N2 selectivity was about twice the CO2/O2 selectivity. As the CO2 partial pressure decreased, CO2 permeance increased. The performance of the membrane module, in which the developed membranes are supposed to be incorporated, was simulated. When the module is applied to space station, the estimated membrane area was about 43 m2 at the CO2 removal rate (CRR) of 1 kg/day. In the case of space suit, the area was about 46 m2 at CRR=93g/h. The CO2 concentration recovered from the permeate side of the membrane is higher than 95% suggesting very small O2 and N2 losses.
dc.format.mimetypeapplication/pdf
dc.identifier.otherICES_2016_165
dc.identifier.urihttp://hdl.handle.net/2346/67571
dc.language.isoeng
dc.publisher46th International Conference on Environmental Systems
dc.subjectCO2 control
dc.subjectfacilitated transport membrane
dc.subjectCO2 selective membran
dc.subjectspace station
dc.subjectspace suit
dc.titleCO2 Control in Space Station and Space Suit by Novel Facilitated Transport Membranes
dc.typePresentation

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