Electrical and Thermal Performance of an Integrated Bifacial Photovoltaic Thermal (bPVT) Collector Using Compound Parabolic Concentrator

Abstract

This study focused on bPVT collectors integrating CPC and mirrors as reflectors to capture radiation from both the front and rear sides, generating electricity and heat simultaneously. Experimental and analytical methods were used to assess the collector's performance, including electrical, thermal, and overall efficiency. Experimental validation of the bPVT system's thermal model showed partial agreement between theoretical and experimental results. The highest overall energy efficiency achieved was 74.65%, with a temperature output of 49.80 °C under a radiation intensity of 798.8 W/m² and an optimal mass flow rate of 0.0437 kg/s. Comparisons with prior research indicated the superiority of the integrated bPVT collector, achieving an efficiency of 84.61%, surpassing both monofacial and bifacial PVT air collectors. These findings advance bPVT collector technology, aiding in further design optimisation and integration into sustainable energy solutions.