Design and Manufacturing of Absorber for Solar Desalination System

Abstract:

In solar desalination system, solar energy is utilized for heating salt water using parabolic solar concentrator. The steam formed is then condensed to get the pure water. The water is kept in an absorber placed within the focal area of the concentrator. Optimal utilization of solar energy is possible by designing an absorber of proper size. Parabolic dish type concentrator is generally used for cooking but here we discuss its use in steam generation. Paper explains design and manufacturing of absorber and then comparing the results with conventional cooking vessel. Material of the absorber is selected considering the effects of seawater, the ability to resist high temperature, and manufacturability. Heat resistant coating is applied for maximum absorption of the radiation. Absorber designed as a thin walled pressure vessel is then manufactured by rolling, pressing and welding processes. Rate of evaporation of water in the designed absorber is compared with that in the conventional vessel for different sunshine conditions. It is observed that designed absorber is more efficient.

• Periodical: Applied Mechanics and Materials (Volumes 446-447)
• Pages: 716-720
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.446-447.716
• Online since: November 2013
• Authors: Mandar S. Sapre, Abhijeet B. Auti, T.P. Singh
• Keywords: Absorber, Concentrator, Evaporation, Focal Area, Solar Radiations

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