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Effect of Selective Coatings on Solar Absorber for Parabolic Dish Collector

Affiliations

  • Department of Mechanical Engineering, SRM University, Kattankulathur, Chennai - 603203, Tamil Nadu, India

Abstract


Objectives: The effect of selective coatings on the solar absorber of a Parabolic Dish Collector (PDC) is presented in this work. Methods/Statistical Analysis: Outdoor experiments performed on sunny days at a 16 square meter. PDC with selective absorber of 0.4 m diameter. The Mild Steel (MS) absorber plates coated with nickel and chromium for their low emissivity and high absorptivity using the electroplating process with thicknesses of 30 μm. Findings: Instantaneous efficiency, radiative and convective heat losses evaluated for the absorber. The efficiency of collector system is highest when the mild steel absorber plate coated with nickel. Application/Improvements: The solar selective coatings are more beneficial in the energy transfer and economical to the consumers. The consistent higher absorption rate at the outdoor climate has to attain with a long life coating.

Keywords

Parabolic Dish Collector, Selective Coating, Solar Absorber,Solar Concentrator.

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