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Experimental Performance of an Advanced Air-Type Photovoltaic/Thermal (PVT) Collector with Direct Expansion Air Handling Unit (AHU)

Author

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  • Jin-Hee Kim

    (Green Energy Technology Research Center, Kongju National University, Cheonan 314701, Korea)

  • Sang-Myung Kim

    (Graduate School of Energy System Engineering, Kongju National University, Cheonan 314701, Korea)

  • Jun-Tae Kim

    (Department of Architectural Engineering, Kongju National University, Cheonan 314701, Korea)

Abstract

In addition to electrical energy generation, photovoltaic/thermal (PVT) systems utilize heat from building-integrated photovoltaic (BIPV) modules for domestic hot water and space heating. In other words, a PVT system can improve the electricity efficiency of BIPVs while using the waste heat of BIPVs as a source of thermal energy for the building. By generating thermal and electrical energies simultaneously, PVT systems can improve the utilization of solar energy while enhancing the energy performance of buildings. To optimize the performance of an air-type PVT collector, it is necessary for the system to extract more heat from the PV module. Consequently, this approach decreases PV temperature to improve PV electrical energy generation. The thermal and electrical performance of an air-type PVT collector depends on its design, which affects airflow and heat transfer. Moreover, the performances of the PVT collector can differ according to the coupled facility in the building. In this study, the thermal and electrical performances of an advanced air-type PVT collector with a direct expansion air handling unit (AHU) were analyzed experimentally. For this purpose, six prototypes of an advanced air-type PVT collector were developed. Furthermore, a direct expansion AHU with a heat recovery exchanger (HRX) was designed and built. The advanced PVT collectors with a total capacity of 740 Wp were installed in an experimental house and were coupled to the direct expansion AHU system with a maximum airflow of 700 CMH. The performance of PVT collectors was analyzed and compared with the BIPV system. Results showed that building-integrated photovoltaic/thermal (BIPVT) collectors produced 30 W more power than the BIPV system. When operating the AHU system, the temperature of the BIPVT collector was generally lower than the BIPV. The maximum difference in temperature between BIPVT and BIPV was about 22 °C. During winter season, the BIPVT collector supplied preheated air to the AHU. The supplied air temperature from the BIPVT collector reached 32 °C, which was 15 °C higher than outdoor air temperature.

Suggested Citation

  • Jin-Hee Kim & Sang-Myung Kim & Jun-Tae Kim, 2021. "Experimental Performance of an Advanced Air-Type Photovoltaic/Thermal (PVT) Collector with Direct Expansion Air Handling Unit (AHU)," Sustainability, MDPI, vol. 13(2), pages 1-10, January.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:2:p:888-:d:481812
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    References listed on IDEAS

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    2. Sang-Myung Kim & Jin-Hee Kim & Jun-Tae Kim, 2019. "Experimental Study on the Thermal and Electrical Characteristics of an Air-Based Photovoltaic Thermal Collector," Energies, MDPI, vol. 12(14), pages 1-14, July.
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    Cited by:

    1. Husam Abdulrasool Hasan & Jenan S. Sherza & Jasim M. Mahdi & Hussein Togun & Azher M. Abed & Raed Khalid Ibrahim & Wahiba Yaïci, 2022. "Experimental Evaluation of the Thermoelectrical Performance of Photovoltaic-Thermal Systems with a Water-Cooled Heat Sink," Sustainability, MDPI, vol. 14(16), pages 1-16, August.
    2. Fatih Selimefendigil & Ceylin Şirin & Hakan F. Öztop, 2022. "Experimental Performance Analysis of a Solar Desalination System Modified with Natural Dolomite Powder Integrated Latent Heat Thermal Storage Unit," Sustainability, MDPI, vol. 14(5), pages 1-15, February.
    3. Abdelrazik, A.S. & Shboul, Bashar & Elwardany, Mohamed & Zohny, R.N. & Osama, Ahmed, 2022. "The recent advancements in the building integrated photovoltaic/thermal (BIPV/T) systems: An updated review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 170(C).
    4. Jong-Gwon Ahn & Ji-Suk Yu & Fred Edmond Boafo & Jin-Hee Kim & Jun-Tae Kim, 2021. "Simulation and Performance Analysis of Air-Type PVT Collector with Interspaced Baffle-PV Cell Design," Energies, MDPI, vol. 14(17), pages 1-12, August.
    5. Haitham Esam Rababah & Azhar Ghazali & Mohd Hafizal Mohd Isa, 2021. "Building Integrated Photovoltaic (BIPV) in Southeast Asian Countries: Review of Effects and Challenges," Sustainability, MDPI, vol. 13(23), pages 1-20, November.

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