Emittance Measurement on Various Optical Solar Reflectors

Ramasamy, A.; Sundaresan, N. K.; Padmanabhan,; Gupta, P. P.; Bhandari, Deepak; Narayanamurthy, H.

doi:10.4271/941517

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Hemispherical Emittance1

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2001

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“…Measurements of total hemispherical emittance have been made using calorimetric method [12]. This consists of measurement of the power-input parameters and temperatures of sample and the shroud.…”

Section: Hemispherical Emittancementioning

confidence: 99%

Thermal studies on electrodeposited black oxide coating on magnesium alloys

2001

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Thermal behavior of black anodic coatings on magnesium alloy, AZ31B and magnesium lithium alloy, MLA 9 has been investigated. The chemical nature of coating is characterized by infrared spectral studies. The thermoanalytical investigations have been carried out using thermogravimetry (TG), derivative thermogravimetry (DTG), and differential scanning calorimetry (DSC). The decomposition proceeds through three steps viz., dehydration, decomposition of chromium hydroxide and sulphate and decomposition of magnesium chromate to oxide. Measurement of hemispherical emittance of coatings verses temperature was investigated using calorimetric methods. The studies revealed that the thermal emittance of coatings increases with temperature. #

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Section: Hemispherical Emittancementioning

confidence: 99%