Experimental Investigation of a Concentrating Bifacial Photovoltaic/Thermal Heat Pump System with a Triangular Trough

Gülşah Karaca Dolgun, Onur Vahip Güler, Aleksandar G. Georgiev () and Ali Keçebaş
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Gülşah Karaca Dolgun: Department of Energy Systems Engineering, Muğla Sıtkı Koçman University, 48000 Muğla, Turkey
Onur Vahip Güler: Department of Energy Systems Engineering, Muğla Sıtkı Koçman University, 48000 Muğla, Turkey
Aleksandar G. Georgiev: Department of Mechanics, Technical University of Sofia, Plovdiv Branch, 25 Tsanko Diustabanov Str., 4000 Plovdiv, Bulgaria
Ali Keçebaş: Department of Energy Systems Engineering, Muğla Sıtkı Koçman University, 48000 Muğla, Turkey

Energies, 2023, vol. 16, issue 2, 1-20

Abstract: The heat absorbed by the heat transfer fluid for cooling a concentrated photovoltaic thermal (CPVT) solar collector can be used for purposes such as residential heating and cooking. Because of the combined production of heat and power, these systems are proposed for individual or commercial use in rural areas. In this study, a hybrid system was proposed to increase the electrical efficiency of the system. Experiments were conducted in winter conditions. Two operational modes were compared, namely a CPVT system with HP (HP-CPVT) and without HP (CPVT). The evaporator of the heat pump was settled inside the triangular trough receiver. The effects of cooling the PV system with a heat pump in the bifacial CPVT system on the electrical and thermal energy efficiencies were investigated. The electricity and thermal energy efficiencies of the CPVT system were calculated as 12.54% and 38.37% in the HP-CPVT system, respectively, and 10.05% and 81.97% in the CPVT system, respectively. The electrical exergy efficiencies of the CPVT system with and without HP were 14.65% and 10.73%, respectively. The thermal exergy efficiencies of the CPVT system with and without HP were 82.47% and 85.63%, respectively. The thermal heat obtained from the HP-CPVT system can be used for heating needs. Thus, the bifacial HP-CPVT system was an example of the micro-CHP system.

Keywords: combined heat and power; CPVT; heat pump; parabolic triangular trough; performance (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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Citations: View citations in EconPapers (1)

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