Integrated Optical, Electrical and Thermal Modelling of a Parabolic-trough Spectral-splitting Pv-t Collector

Pandey, Chandan, Polito, Francesco, Teo, Benjamin, Wu, Mingyang, Oyeniran, Adelani, Markides, Christos N.

ISES Solar World Congress 2025 · Fortaleza, Brazil · 2025-11-03
Published by International Solar Energy Society (ISES)

Abstract

We develop a coupled optical, electrical, and thermal model of a parabolic-trough spectral-splitting photovoltaic thermal collector design based on selective-reflection filter. Using the model, we perform simulations of the maximum performance (at zero reduced temperature) of the collector. Results reveal that the primary receiver can achieve a 30% maximum thermal efficiency and a 16% maximum electrical efficiency, while the secondary absorber can reach a 32% maximum thermal efficiency (thus leading to a maximum overall thermal efficiency of 62%) under the following test conditions: primary receiver flow rate of 0.05 kg/s, secondary thermal absorber flow rate of 0.1 kg/s, irradiance at the collector’s aperture 1000 W/m2, inlet and ambient temperatures of 25 °C.

Keywords

Photovoltaic-thermal, Spectral splitting, concentrating.

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