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    Emittance Theory for Thin Film Selective Emitter (1994)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Thin films of high temperature garnet materials such as yttrium aluminum garnet (YAG) doped with rare earths are currently being investigated as selective emitters. This paper presents a radiative transfer analysis of the thin film emitter. From this analysis the emitter efficiency and power density are calculated. Results based on measured extinction coefficients for erbium-YAG and holmium-YAG are presented. These results indicated that emitter efficiencies of 50 percent and power densities of several watts/sq cm are attainable at moderate temperatures (less than 1750 K).
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA-TM-106727 , E-9097 , NAS 1.15:106727 , Conference on Thermophotovoltaic Generation of Electricity; Jul 24, 1994 - Jul 26, 1994; Copper Mountain, CO; United States
    Format: application/pdf
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