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- W2094041489 abstract "A novel pyrometric technique is being developed in Electricite de France (EDF)for measuring the surface temperature of the moving blades of partial load steamturbines. This technique uses the photothermal effect to slightly (temporarily)modify the superficial temperature of the object. Theoretical considerations showthat the measurement is proportionnal to successive derivatives of Planck's function.The point is that the measurement is thus made. insensitive to background radiationpartially reflected to the detection system by the object itself. Moreover, the shortduration of the operation (several microseconds) allows quick moving targets to bemeasured. We here use the method for monitoring the temperature of the moving bladesof partial load steam turbines in EDF nuclear power plants. A rod-shaped probe usingfiber optics is being built to take measurements in real conditions. Some laboratorypreliminary results show effectiveness and good accuracy of the method. Furtherstudies will permit the extension of this new method to many industrial problemswhere non-contact temperature measurements in adverse radiative conditions arerequired." @default.
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- W2094041489 date "1990-03-01" @default.
- W2094041489 modified "2023-09-27" @default.
- W2094041489 title " Novel pyrometer using photothermal effect and fiber optics " @default.
- W2094041489 doi "https://doi.org/10.1117/12.21943" @default.
- W2094041489 hasPublicationYear "1990" @default.
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