Emissivity probe

G - Physics – 01 – N

Patent

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Details

G01N 21/55 (2006.01) F22B 37/56 (2006.01) G01J 5/04 (2006.01) G01N 21/954 (2006.01)

Patent

CA 2437327

An emissivity probe for measuring reflected energy from interior wall surfaces of large scale boilers. The emissivity probe uses a pair of light guides which respectively receive light energy from the interior of the boiler and that reflected off a wall surface. Using appropriate photo detectors sensitive to a desired light wavelength range, a ratio of the reflected and incident radiation is provided. This provides a measure of the reflectivity of the wall surface. The reflectivity values are used to control boiler cleaning systems.

Il s'agit d'une sonde d'émissivité qui permet de mesurer l'énergie réfléchie par les surfaces des parois intérieures des grosses chaudières. Cette sonde d'émissivité fait appel à une paire de conduits de lumière qui reçoivent respectivement de l'énergie lumineuse de l'intérieur de la chaudière, cette énergie étant réfléchie par une surface de paroi. On obtient, au moyen de photodétecteurs appropriés et sensibles à une plage de longueurs d'ondes lumineuses voulue, un rapport du rayonnement réfléchi au rayonnement incident. Ce procédé donne la mesure de réflectivité de la surfaces des parois. Les valeurs de réflectivité permettent de gérer les systèmes de nettoyage des chaudières.

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