Title: Exergetic assessment of a concentrated photovoltaic-thermoelectric system with consideration of contact resistance
Authors: Aminu Yusuf; Sedat Ballikaya
Addresses: Department of Electrical and Electronics Engineering, Istanbul University – Cerrahpaşa, Avcılar, 34320, Turkey ' Department of Physics, Istanbul University, Fatih, 34452, Turkey
Abstract: Despite extensive studies on concentrated photovoltaic-thermoelectric systems, exergy analysis has not been given much attention. Herein, a comprehensive exergy analysis of a concentrated photovoltaic-thermoelectric system is presented. The results showed that increasing the number of thermoelectric modules in the system reduces the exergy destruction in the system, thereby improves the exergy efficiency. Likewise, performance of an individual thermoelectric module reduces with increase in the number of thermoelectric modules in the system. While increasing the contact resistance from 0% to 100% of internal resistance of the thermoelectric modules reduces the exergy efficiency of the thermoelectric modules by 50%.
Keywords: contact resistance; performance evaluation; exergy efficiency; thermoelectric modules; concentrated photovoltaic; thermodynamic system; exergy destruction; solar energy; electrical energy; heat transfer; water cooled-system; one-dimensional model.
International Journal of Exergy, 2022 Vol.38 No.4, pp.411 - 421
Received: 20 Sep 2021
Accepted: 08 Nov 2021
Published online: 29 Jul 2022 *