The NASA Glenn Research Center is developing technologies that utilize solar energy for various space applications including electrical power conversion, thermal propulsion, and furnaces. Common to all of these applications is the need for highly efficient, solar concentration systems. An effort is underway to develop the innovative single crystal refractive secondary concentrator, which uses refraction and total internal reflection to efficiently concentrate and direct solar energy. The refractive secondary offers very high throughput efficiencies (> 90%), and when used in combination with advanced primary concentrators, enables very high concentration ratios (10,000 to 1) and very high temperatures (> 2000 K).Presented is an overview of the refractive secondary concentrator development effort at the NASA Glenn Research Center, including optical design and analysis techniques, thermal modeling capabilities, crystal materials characterization testing, optical coatings evaluation, and component testing. Also presented is a discussion of potential future activity and technical issues yet to be resolved. Much of the work performed to date has been in support of the NASA Marshall Space Flight Center's Solar Thermal Propulsion Program. The many benefits of a refractive secondary concentrator that enable efficient, high temperature thermal propulsion system designs, apply equally well to other solar applications including furnaces and power generation systems such as solar dynamics (i.e. Brayton, Stirling), concentrated thermal photovoltaics, and thermionics.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Refractive Secondary Concentrators for Solar Thermal Applications


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    34th Intersociety Energy Conversion Engineering Conference ; 1999



    Erscheinungsdatum :

    02.08.1999




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Dish Concentrators for Solar Thermal Energy

    Leonard D. Jaffe | AIAA | 1983


    Solar concentrators for space processing applications

    Mc Dermit, J.H. / Ruff, R.C. | Tema Archiv | 1975


    Solar concentrators for space processing applications

    MCDERMIT, J. / RUFF, R. | AIAA | 1975


    Modeling of Solar Concentrators

    Rockey, D. E. | NTRS | 1984


    Concentrators Designed for a Solar Thermal Propulsion Upperstage

    Paxton, J. P. / Gierow, P. A. / United States; Joint Army-Navy-NASA-Air Force Interagency Propulsion Committee | British Library Conference Proceedings | 1995