Suraparaju, Subbarama Kousik and Samykano, Mahendran and Nandavarapu, Raveendra Reddy and Natarajan, Sendhil Kumar and Muthuvairavan, Guna and Yadav, Aman and Vasudevan, Gopi (2025) Innovative Double-Finned absorber and Nanoparticle-Enhanced energy storage for enhanced Thermo-Economic performance of solar stills. Separation and Purification Technology, 361 (131360). pp. 1-23. ISSN 1383-5866. (Published)
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Abstract
This research investigates the potential of integrating nanoparticle-infused composite energy storage materials (CESM) with an innovative double-finned (DF) absorber in a single slope solar still (SSSS) to address the inefficiencies of conventional solar desalination systems. Traditional solar stills often face heat transfer and retention limitations, which hinder their overall performance. This study introduces a novel double-finned absorber, which optimizes thermal distribution by providing an expanded surface area for heat absorption and transfer within the system. Additionally, coal nanoparticles (CNPs) are incorporated into paraffin wax to develop composite energy storage materials, resulting in a 52.61 % improvement in thermal conductivity at the optimal nanoparticle concentration. Morphological analysis confirms the structural integrity of coal nanoparticles, ensuring reliable energy storage and release over repeated cycles. Experimental results demonstrate a remarkable 123 % increase in distillate yield compared to conventional solar stills. The proposed system achieves superior thermal management, with peak absorber temperatures reaching 68 °C, resulting in efficient and sustained water evaporation. Thermal efficiency improves to 51.38 %, nearly doubling the 29.88 % efficiency of conventional solar stills. Economic analysis reveals a significant reduction in water production costs to ₹1.25 per liter, with a payback period of just 4.5 months, highlighting the system's economic feasibility. This study underscores the synergistic effects of composite energy storage materials and advanced absorber designs, setting a new standard in solar desalination technology. The proposed system offers a sustainable and scalable solution to address global water scarcity challenges by significantly enhancing water yield, energy efficiency, and cost-effectiveness.
| Item Type: | Article |
|---|---|
| Additional Information: | Indexed by Scopus |
| Uncontrolled Keywords: | Composite energy storage; Double-finned absorber; Economic analysis; Phase change materials; Solar desalination; Thermal efficiency |
| Subjects: | T Technology > T Technology (General) T Technology > TA Engineering (General). Civil engineering (General) T Technology > TJ Mechanical engineering and machinery T Technology > TL Motor vehicles. Aeronautics. Astronautics |
| Faculty/Division: | Institute of Postgraduate Studies Faculty of Mechanical and Automotive Engineering Technology Centre for Research in Advanced Fluid & Processes (Fluid Centre) |
| Depositing User: | Mr Muhamad Firdaus Janih@Jaini |
| Date Deposited: | 22 Jan 2025 08:02 |
| Last Modified: | 22 Jan 2025 08:02 |
| URI: | http://umpir.ump.edu.my/id/eprint/43666 |
| Download Statistic: | View Download Statistics |
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