Journal
OPTICS EXPRESS
Volume 26, Issue 10, Pages A480-A486Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.26.00A480
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Total absorption and emission coefficients of selective solar absorbers are measured under high vacuum conditions from room temperature up to stagnation temperature. The sample under investigation is illuminated under vacuum @1000W/m(2) and the sample temperature is recorded during heat up, equilibrium and cool down. During stagnation, the absorber temperature exceeds 300 degrees C without concentration. Data analysis allows evaluating the solar absorptance and thermal emittance at different temperatures. These in turn are useful to predict evacuated solar panel performances at operating conditions. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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