A new conceptual design of flat-plate solar collector based on two-phased closed thermosyphon: CFD-based exergetic optimization

Arat H., ARSLAN O.

Solar Energy, cilt.300, 2025 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 300
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1016/j.solener.2025.113873
  • Dergi Adı: Solar Energy
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Agricultural & Environmental Science Database, Applied Science & Technology Source, Communication Abstracts, Compendex, Environment Index, Geobase, INSPEC, Metadex, Civil Engineering Abstracts
  • Anahtar Kelimeler: CFD, Energy-Exergy analysis, Solar collector, Thermosyphon, Two-phase flow
  • Bilecik Şeyh Edebali Üniversitesi Adresli: Evet

Özet

Flat-plate type collectors are, which still needs to be improved, widely used in the residential buildings for hot water production depending on lower costs. This study investigates the thermal performance of a new designed flat-plate solar collector which contains the two-phase closed thermosyphons instead of the steady flow open system. The performance of the new designs with different number (6–14) of thermosyphons were evaluated via computational fluid dynamics method under different solar irradiations (200–1000 W/m2). The energy-exergy analysis of the new flat-plate solar collector was performed to handle the optimal design. According to results, it was observed that the collector efficiency increases with the increase in the outdoor temperature and solar irradiation. On the other hand, it decreases with the increase in the wind speed. The optimal design was determined as the one with 8 pipes with an energy efficiency of 66.51 %, and exergy efficiencies of 10.83 %.