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Experimental evaluation of a solar water heating system integrating thermal mass and phase change material for enhanced efficiency in residential applications

Author

Listed:
  • Natrayan Lakshmaiya
  • Naga Dheeraj Kumar Reddy Chukka
  • Nimel Sworna Ross
  • Seeniappan Kaliappan
  • Ramya Maranan
  • Prabhu Paramasivam
  • Abinet Gosaye Ayanie

Abstract

This study introduces a novel solar water heating system for residential applications, integrating an evacuated tube solar collector with a combined thermal mass storage unit using water and phase change material (PCM). The system optimizes energy retention and heat delivery by leveraging PCM’s high latent heat storage capacity and water’s specific heat. Experimental results demonstrated significant performance improvements, with PCM-based storage achieving temperatures up to 85°C at high sunlight intensity (1200 W/m2), surpassing water-only systems by 13%. The system maintained consistent water temperatures (33°C–58°C) despite low sunlight intensities. This innovation enhances system efficiency, adaptability, and sustainability under variable sunlight.

Suggested Citation

  • Natrayan Lakshmaiya & Naga Dheeraj Kumar Reddy Chukka & Nimel Sworna Ross & Seeniappan Kaliappan & Ramya Maranan & Prabhu Paramasivam & Abinet Gosaye Ayanie, 2025. "Experimental evaluation of a solar water heating system integrating thermal mass and phase change material for enhanced efficiency in residential applications," International Journal of Low-Carbon Technologies, Oxford University Press, vol. 20, pages 1674-1681.
    • Handle: RePEc:oup:ijlctc:v:20:y:2025:i::p:1674-1681.
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    File URL: http://hdl.handle.net/10.1093/ijlct/ctaf108
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