Thermal and fluid dynamic optimization of a CPV-T receiver for solar co-generation applications: Numerical modelling and experimental validation

Date

2023-07-01

Author

Santos, Daniel
Azgın, Ahmet
Castro, Jesus
Kizildag, Deniz
Rigola, Joaquim
TUNÇEL, BİLGE
Turan, Raşit
Preßmair, Rupert
Felsberger, Richard
Buchroithner, Armin

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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Solar co-generation, i.e., the generation of electricity and heat in a single device by concentrating the sunbeams, has the potential to significantly increase the overall system performance. The main challenge is related to the cooling of solar cells. In order to do so, it is essential to reduce the thermal resistance between the cell and heat transfer fluid. This paper features the optimization procedure of a low-cost custom concentrated photovoltaic thermal (CPV-T) receiver for a parabolic trough collector using silicon solar cells. A finite volume model for the thermal process has been developed. Hence, a fluid dynamic thermal simulation of the receiver is presented. The optimized heat sink tube geometries have been manufactured and tested in a lab environment, allowing for a comparison between modelling and experimental test results. Three possible heat sink geometries have been designed and compared regarding their overall heat transfer coefficient with respect to the non-dimensional pumping power, i.e. the ratio between the overall transferred heat and the energy required for pumping. The overall heat transfer coefficient for a finned heat sink has been increased up to 60% with respect to a baseline case without fins under similar conditions.

Subject Keywords

Computational fluid dynamics, Concentrated photoVoltaic thermal system, Heat sink, Receiver, Solar cells, Solar energy

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85154597708&origin=inward
https://hdl.handle.net/11511/103360

Collections

Department of Physics, Article