Concentrated Photovoltaic/Thermal Hybrid System Coupled with a Thermoelectric Generator

Abdelrahman Lashin, Mohammad Al Turkestani and Mohamed Sabry
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Abdelrahman Lashin: Physics Department, College of Applied Science, Umm Al Qura University, Makkah 21955, Saudi Arabia
Mohammad Al Turkestani: Physics Department, College of Applied Science, Umm Al Qura University, Makkah 21955, Saudi Arabia
Mohamed Sabry: Physics Department, College of Applied Science, Umm Al Qura University, Makkah 21955, Saudi Arabia

Energies, 2019, vol. 12, issue 13, 1-12

Abstract: Concentrator photovoltaic (CPV) systems have displayed an important cost reduction and in the next few years could offer a competitive cost advantage compared to that of flat plate PV systems. Such CPV systems require some cooling methods to overcome high operating temperatures, which reduces their efficiency significantly. On the other hand, thermoelectric generators (TEG) are devices that convert thermal energy directly to electrical energy, provided that there is a temperature difference between its two faces. A hybrid concentrator photovoltaic/thermal (CPV/T) system is proposed in this work. Such a system uses TEG in a two-fold manner: to passively cool down the CPV cell in order to maintain its power conversion efficiency in such high temperature conditions, and to use the accumulated thermal energy to generate electrical energy, which is added to the system’s total power output. Two types of solar cells were investigated, namely, Ga 0.35 In 0.65 P/Ga 0.83 In 0.17 As with efficiency an of 28% at 250X, and a Laser Grooved Buried Contact (LGBC) silicon concentrator PV cell with an efficiency of 18.3% at 40X. These cells are assumed to be coupled with two TEGs of the same type but with a different number of junctions. Experimental results showed that coupling TEG modules to a CPV system could be a useful method for enhancing the overall output power, provided that PV cells are chosen with a low efficiency temperature coefficient and high PV performance. Also, TEG modules have to be chosen with a high figure of merit. Moreover, the operating optical concentration ratio, as well as the covered area of the TEG, have to be optimized in order to maximize the total system output.

Keywords: concentrator photovoltaic; thermoelectric generator; PV/T hybrid system (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: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (6)

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