Electrical efficiency analysis of building integrated photovoltaic/thermal systems in hot climates: comparison of bifacial and monofacial panels

Demir Y. C., Guzel A., Aktacir M. A.

International Journal of Global Warming, vol.37, no.2-3, pp.155-171, 2025 (SCI-Expanded, Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 37 Issue: 2-3
  • Publication Date: 2025
  • Doi Number: 10.1504/ijgw.2025.149144
  • Journal Name: International Journal of Global Warming
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, CAB Abstracts, INSPEC, Veterinary Science Database, Civil Engineering Abstracts
  • Page Numbers: pp.155-171
  • Keywords: bifacial and monofacial panel, BIPV/T, building integrated photovoltaic/thermal, cooling strategies, energy efficiency, hot climate performance
  • Kocaeli University Affiliated: Yes

Abstract

This study investigates the performance of a building integrated photovoltaic/thermal (BIPV/T) system with bifacial and monofacial panels in Sanliurfa’s summer conditions. Experiments were conducted with different fan speeds, air gap distances, and cooling strategies. Results show that bifacial panels achieved 18.19% higher efficiency than monofacial panels and performed better in high temperatures. Increasing the air gap distance has enhanced efficiency, especially in bifacial panels, due to the reflective surface behind the panel. Artificial cooling further boosted efficiency, emphasising its potential for hot climates. It was observed that BIPV/T performance was significantly enhanced through optimised airflow, panel technology, and cooling methods.