Proceedings of 2nd International Multi-Disciplinary Conference Theme: Integrated Sciences and Technologies, IMDC-IST 2021, 7-9 September 2021, Sakarya, Turkey

Research Article

Thermal Enhancement for Solar Water Heating System by Using Phase change Materials

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  • @INPROCEEDINGS{10.4108/eai.7-9-2021.2314777,
        author={Zahraa A. Abdalaali and Saadoon F. Dakhil and Tahsien A. Jabbar},
        title={Thermal Enhancement for Solar Water Heating System by Using Phase change Materials},
        proceedings={Proceedings of 2nd International Multi-Disciplinary Conference Theme: Integrated Sciences and Technologies, IMDC-IST 2021, 7-9 September 2021, Sakarya, Turkey},
        publisher={EAI},
        proceedings_a={IMDC-IST},
        year={2022},
        month={1},
        keywords={heat transfer pcm solar energy-fluent},
        doi={10.4108/eai.7-9-2021.2314777}
    }
    
  • Zahraa A. Abdalaali
    Saadoon F. Dakhil
    Tahsien A. Jabbar
    Year: 2022
    Thermal Enhancement for Solar Water Heating System by Using Phase change Materials
    IMDC-IST
    EAI
    DOI: 10.4108/eai.7-9-2021.2314777
Zahraa A. Abdalaali1,*, Saadoon F. Dakhil1, Tahsien A. Jabbar1
  • 1: Fuel and Energy Department, College of Technical Engineering, Southern Technical University
*Contact email: albadyzhra5@gmail.com

Abstract

Thermal storage using phase-change materials PCMs is an efficient technique for enhancing the efficiency of solar energy utilization. This paper presents an experimental and numerical investigation to study the solar thermal energy storage systems using an encapsulated PCM working in a realistic environment (Basra, Iraq). Numerical investigating the thermal performance of the heating system by using CFD technics with finite volume method. Water is used as the heat-transfer fluid HTF as well as sensible heat material. While paraffin wax packed in small cylindrical galvanized-iron capsules is used as the latent heat-PCM material. The capsules are integrated in a commercially available cylindrical storage tank for hot water. First, the advantage of using flat plate solar collector FPSC and PCM is demonstrated on an insulated water tank. Finally, a turbulent-transient-3D model was developed using the ANSYS FLUENT 2020 R1 and compared with the experimental results. It was found in this case that the water temperature reaches above 50°C. Remained hot at least 25°C higher than the ambient temperature over a period of 16h due to the presence of PCM. Parametric analyzes are performed to study the effect of the HTF flow rate (3 and 15lit/min) and the amount of PCM (5 and 10kg) on the PCM melting process, the charging time, and thermal storage energy of the water tank.