Concentrated Solar Thermophotovoltaic Power for a Lunar Daytime Work Site

This study sizes a concentrated solar thermophotovoltaic system delivering 20.0 kilowatts of daytime electricity: with a cell conversion fraction of 0.22 the emitter must absorb 90.9 kilowatts, collected through a concentrator aperture of 83.5 square metres onto an emitter of 0.32 square metres at 1500 kelvin, a concentration ratio near 264, for an overall sunlight-to-electricity efficiency of 17.6 percent. Sizing follows from computed energy budgets derived in the study. This is a computed study with no targeting or weapon application. The work is simulated and computed from stated assumptions, not measured.