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Theoretical Investigation of the Temperature Limits of an Actively Cooled High Concentration Photovoltaic System

Ahmed, Asmaa; Shanks, Katie; Sundaram, Senthilarasu; Mallick, Tapas Kumar

Authors

Asmaa Ahmed

Katie Shanks

Tapas Kumar Mallick



Abstract

Concentrator photovoltaics have several advantages over flat plate systems. However, the increase in solar concentration usually leads to an increase in the solar cell temperature, which decreases the performance of the system. Therefore, in this paper, we investigate the performance and temperature limits of a high concentration photovoltaic Thermal system (HCPVT) based on a 1 cm2 multi-junction solar cell subjected to a concentration ratio from 500× to 2000× by using three different types of cooling fluids (water, ethylene glycol and water mixture (60:40), and syltherm oil 800). The results show that, for this configuration, the maximum volumetric temperature of the solar cell did not exceed the manufacturer’s recommended limit for the tested fluids. At 2000× the lowest solar cell temperature obtained by using water was 93.5 °C, while it reached as high as 109 °C by using syltherm oil 800, which is almost equal to the maximum operating limit provided by the manufacturer (110 °C). Overall, the best performance in terms of temperature distribution, thermal, and electrical efficiency was achieved by using water, while the highest outlet temperature was obtained by using syltherm oil 800.

Journal Article Type Article
Acceptance Date Apr 9, 2020
Online Publication Date Apr 13, 2020
Publication Date 2020
Deposit Date Feb 2, 2022
Publicly Available Date Feb 2, 2022
Journal Energies
Publisher MDPI
Peer Reviewed Peer Reviewed
Volume 13
Issue 8
Article Number 1902
DOI https://doi.org/10.3390/en13081902
Keywords multi-junction solar cell; HCPV; minichannel; finite element method
Public URL http://researchrepository.napier.ac.uk/Output/2840038

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