Development of a Rapid Cycling CO<sub>2</sub> and H<sub>2</sub>O Removal Sorbent

Alptekin, Gökhan; Cates, Matthew; Bernal, Casey; Dubovik, Margarita; Paul, Heather L.

doi:10.4271/2007-01-3271

Cited by 1 publication

(1 citation statement)

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“…Therefore, some water is lost along with the CO 2 irrespective of the suit cooling system employed. 10 As the RCA system does not serve to cool the suit, any water lost via regeneration would be in addition to any water losses in the cooling system. In summary, the losses of water through EVA may range dramatically in future lunar surface missions.…”

Section: B Water Use For Extravehicular Activitymentioning

confidence: 99%

Impact of Water Recovery from Wastes on the Lunar Surface Mission Water Balance

Fisher

Hogan

Wignarajah

et al. 2010

40th International Conference on Environmental Systems

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Abstract:Future extended lunar surface missions will require extensive recovery of resources to reduce mission costs and enable self-sufficiency. Water is of particular importance due to its potential use for human consumption and hygiene, general cleaning, clothes washing, radiation shielding, cooling for extravehicular activity suits, and oxygen and hydrogen production. Various water sources are inherently present or are generated in lunar surface missions, and subject to recovery. They include: initial water stores, water contained in food, human and other solid wastes, wastewaters and associated brines, ISRU water, and scavenging from residual propellant in landers. Future extended lunar surface missions will require extensive recovery of resources to reduce mission costs and enable self-sufficiency. Water is of particular importance due to its potential use for human consumption and hygiene, general cleaning, clothes washing, radiation shielding, cooling for extravehicular activity suits, and oxygen and hydrogen production. Various water sources are inherently present or are generated in lunar surface missions, and subject to recovery. They include: initial water stores, water contained in food, human and other solid wastes, wastewaters and associated brines, ISRU water, and scavenging from residual propellant in landers. This paper presents the results of an analysis of the contribution of water recovery from life support wastes on the overall water balance for lunar surface missions. Water in human wastes, metabolic activity and survival needs are well characterized and dependable data are available. A detailed life support waste model was developed that summarizes the composition of life support wastes and their water content. Waste processing technologies were reviewed for their potential to recover that water. The recoverable water in waste is a significant contribution to the overall water balance. The value of this contribution is discussed in the context of the other major sources and losses of water. Combined with other analyses these results provide guidance for research and technology development and down-selection.

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Section: B Water Use For Extravehicular Activitymentioning

confidence: 99%