Abstract
In this work an alternative method for emittance determination based on pyrometric measurements is presented. The measurement procedure is limited by the spectral range of the infrared sensors used in this work (1400–5000 nm) and by its working temperature range (500–1000 °C). The measurement procedure has been applied to sintered SiC samples in the Plataforma Solar de Almería solar furnace SF40. The experimental results show that emittance decreases with increasing temperature and wavelength with a main value of 0.80. This behaviour is in agreement with experimental results obtained by other authors. Analysis of tests has revealed a good repeatability (1%) and accuracy (<3%) of this measurement procedure.
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