Experimental investigation on surface radiation properties’ degradation of solar collector receiver tube material

Mageshwaran, G.; Ramachandran, S.; Gunasekaran, Iyappan; Durairaj, R.B.

doi:10.1080/01430750.2016.1202139

Cited by 8 publications

(1 citation statement)

References 12 publications

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“…The study of degradation characteristics of stainless steel 304 was carried out by G. Mageshwaran et al under various time interval and temperature variation, by which, there is a reduction in aS/E ratio which increases emissivity and decreases absorptivity [1]. The degradation property of surface radiation is carried out on black chrome-coated stainless substrates by using electron spectroscopy [2].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on Properties of Surface Radiation of Solar Collector Receiver Tube Material with Black Nickel Coating

Durairaj¹,

Tjprc²

2019

IJMPERD

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In this study, the characteristics of surface radiation heat transfer properties of stainless steel 304with Black Nickel coating is investigated with and without exposure of sunlight to measure the emissivity (€) and absorptivity (ὰ). Exposure of sunlight is carried out for various time internals (240, 480, 720 and 960 hrs). For every 10 equal intervals, the material is measured for temperature dependency property. The emissivity (€) and absorptivity (ὰ) is measured for various spray distance (30, 35 and 40mm) of coating. It is observed that emissivity of the material is decreasing and absorptivity of the material is increasing with exposure time. The combined effect of decrease in emissivity and increase in absorptivity leads to which the rate of radiation loss for exposed surface with compared to unexposed surface is decreasing with black nickel coating at an optimum spray distance of 35mm.

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Section: Introductionmentioning

confidence: 99%