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This experimental study examines the integration of thermal energy storage units with phase change materials (PCMs) in solar water heaters. By incorporating materials like paraffin wax and stearic acid, the research evaluates the performance and efficiency improvements in solar water heating systems. The study highlights the advantages of using PCMs, such as high energy storage density and isothermal behaviour during charging and discharging processes, which enhance the efficiency and reliability of solar water heating systems. The performance of the SWH system is significantly improved, with PCM effectively absorbing and storing heat, as demonstrated by the rise from 30.1 to 51.9 °C at 100 mm height from 7:00 A.M. to 12:00 P.M., showcasing the PCM’s role in enhancing system efficiency.

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Experimental Study of Thermal Energy Storage Unit Integrated with Phase Change Materials in Solar Water Heater

  • 会议论文

  • 发表日期：

    2026年

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  • Prakash Rajamani,
  • Vijayan Selvaraj,
  • Dhayanithi Gnanasekaran,
  • Ramakrishnan Thirumalaisamy,
  • Vinod Baridu,
  • Kumaravelan Radhakrishnan

摘要

This experimental study examines the integration of thermal energy storage units with phase change materials (PCMs) in solar water heaters. By incorporating materials like paraffin wax and stearic acid, the research evaluates the performance and efficiency improvements in solar water heating systems. The study highlights the advantages of using PCMs, such as high energy storage density and isothermal behaviour during charging and discharging processes, which enhance the efficiency and reliability of solar water heating systems. The performance of the SWH system is significantly improved, with PCM effectively absorbing and storing heat, as demonstrated by the rise from 30.1 to 51.9 °C at 100 mm height from 7:00 A.M. to 12:00 P.M., showcasing the PCM’s role in enhancing system efficiency.