Photovoltaic-Thermal Systems for Producing Hot Water: A Thermal Study

Authors

  • Muhammad Nadjib Department of Mechanical Engineering, Faculty of Engineering, Universitas Muhammadiyah Yogyakarta
  • Bryan Pramadi Department of Mechanical Engineering, Faculty of Engineering, Universitas Muhammadiyah Yogyakarta
  • Wahyudi Wahyudi Department of Mechanical Engineering, Faculty of Engineering, Universitas Muhammadiyah Yogyakarta
  • Novi Caroko Department of Mechanical Engineering, Faculty of Engineering, Universitas Muhammadiyah Yogyakarta
  • Thoharudin Thoharudin Department of Mechanical Engineering, Faculty of Engineering, Universitas Muhammadiyah Yogyakarta

DOI:

https://doi.org/10.18196/st.v28i1.26206

Keywords:

Cumulative thermal energy, efficiency, photovoltaic-thermal, solar module, solar radiation

Abstract

Photovoltaic technology harnesses solar energy to generate electrical power. With high solar radiation intensity, battery overcharging is risky due to its limited capacity. The surplus electricity generated by solar modules can be converted into thermal energy. This study analyses the thermal behavior of water heating processes within a storage tank in the photovoltaic system. The experiment included a solar module, controller, battery, storage tank, water pump, heating element, and five thermocouples. The study was conducted outdoors over three days, and solar radiation intensity and water temperature were recorded in the tank. The collected data was used to evaluate the photovoltaic-thermal system, especially in the thermal aspect. Results showed that higher solar radiation intensity led to increased water temperatures. The study's highest recorded cumulative thermal energy and efficiency were 1502.74 kJ and 29.34%, respectively. The photovoltaic systems can serve as sources of both electrical and thermal energy.

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Published

2025-05-19

How to Cite

Nadjib, M. ., Pramadi, B., Wahyudi, W., Caroko, N., & Thoharudin, T. (2025). Photovoltaic-Thermal Systems for Producing Hot Water: A Thermal Study. Semesta Teknika, 28(1), 38–46. https://doi.org/10.18196/st.v28i1.26206

Issue

Vol. 28 No. 1 (2025): MEI

Section

Articles

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Copyright (c) 2025 Muhammad Nadjib, Bryan Pramadi, Wahyudi Wahyudi, Novi Caroko, Thoharudin Thoharudin

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