DETERMINATION OF THE EMISSIVITY OF STEEL PLATES AND STEEL PLATES WITH A SELECTIVELY ABSORBING COATING BY COOLING CURVES
S. X. SuleymanovInstitute of SPA “Physics-Sun” of the Academy Science of the Republic of Uzbekistan, Tashkent, UzbekistanElman Sayad ogli NabievTashkent Institute of Railway EngineersВ. Г. ДыскинInstitute of SPA “Physics-Sun” of the Academy Science of the Republic of Uzbekistan, Tashkent, UzbekistanM. U. DjanklichInstitute of SPA “Physics-Sun” of the Academy Science of the Republic of Uzbekistan, Tashkent, UzbekistanO. A. DudkoInstitute of SPA “Physics-Sun” of the Academy Science of the Republic of Uzbekistan, Tashkent, UzbekistanН. А. КулагинаInstitute of SPA “Physics-Sun” of the Academy Science of the Republic of Uzbekistan
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Analysis of the temperature dependence of the emissivity of materials showed that for many materials the dependence of the emissivity on temperature is a linear function. A mathematical model was created with which the parameters of the linear dependence of the emissivity are determined from the experimental cooling curves. The temperature dependence of the emissivity of steel plates is determined, the systems of a steel plates - selectively absorbing coating and a material of selectively absorbing coating based on NiO - TiO2 obtained on a solar furnace.
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