An energy-efficient lyophilization technique is being developed to recover water from highly contaminated spacecraft waste streams. In the lyophilization process, water in an aqueous waste is frozen and then sublimed, separating the waste into a dried solid material and liquid water. This technology is ideally suited to applications such as the Mars Reference Mission, where water recovery rates approaching 100% are desirable but production of CO2 is not. Candidate wastes include feces, concentrated brines from water processors, and other solid wastes that contain water. To operate in microgravity, and to minimize power consumption, thermoelectric heat pumps can be used in place of traditional fluid cycle heat pumps. A mathematical model of a thermoelectric lyophilizer is described and used to generate energy use and processing rate estimates.


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    Titel :

    Lyophilization for Water Recovery


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Litwiller, Eric (Autor:in) / Fisher, John (Autor:in) / Reinhard, Martin (Autor:in) / Flynn, Michael (Autor:in)

    Kongress:

    31st International Conference On Environmental Systems ; 2001



    Erscheinungsdatum :

    09.07.2001




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Lyophilization for Water Recovery

    Litwiller, E. / Reinhard, M. / Flynn, M. et al. | British Library Conference Proceedings | 2001


    Lyophilization for Water Recovery II, Model Validation

    Litwiller, E. / Reinhard, M. / Fisher, J. et al. | British Library Conference Proceedings | 2004


    Lyophilization for Water Recovery III, System Design

    Litwiller, E. / Reinhard, M. / Fisher, J. et al. | British Library Conference Proceedings | 2005


    Lyophilization for Water Recovery III, System Design

    Litwiller, Eric / Fisher, John / Reinhard, Martin et al. | SAE Technical Papers | 2005


    Lyophilization for Water Recovery II, Model Validation

    Litwiller, Eric / Fisher, John / Reinhard, Martin et al. | SAE Technical Papers | 2004