Title: Energy and exergy analysis of solar photovoltaic thermal system: experimental and numerical verification

Authors: Metin Gül; Ersin Akyüz

Addresses: Balıkesir University Institute of Science, Balıkesir, Turkey ' Department of Electronic and Automation, Balıkesir University Vocational School, Balıkesir, Turkey

Abstract: In this study, the electrical and thermodynamic performance of a flat-plate liquid PV/T system was investigated, and the experimental results were verified with a numerical model implemented. The simulation analyses showed that the increasing inlet and ambient temperature had a negative effect on thermal efficiency and the highest thermal efficiency was obtained at 800 W/m² solar radiation. The optical efficiency of the experimental system was verified with the simulation and reported as 45.8% and 47.9%, respectively. Hourly electrical, thermal, and total energy efficiencies obtained hourly on a daily basis were calculated and varied between 12-13.8%, 36.1-45.2%, and 49.1-58.4% respectively on daily basis. The hourly exergy analyses were also carried out and the results showed that the exergy efficiencies changed between 13.8-14.32%. The annual total thermal and electricity energy outputs were calculated as 1,912 kWh and 556.8 kWh respectively.

Keywords: photovoltaic thermal system; PV/T; solar energy; energy; exergy; life-cycle cost.

DOI: 10.1504/IJEX.2021.112033

International Journal of Exergy, 2021 Vol.34 No.1, pp.16 - 28

Received: 26 Mar 2020
Accepted: 04 Jun 2020
Published online: 23 Dec 2020 *

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