Comprehensive thermodynamic, economic, and carbon analysis of a solar-assisted thermal energy storage system integrating a salt gradient solar pond and flat-plate solar collectors for room heating application


ATIZ A., KARAKILÇIK M.

Journal of Energy Storage, cilt.164, 2026 (SCI-Expanded, Scopus) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 164
  • Basım Tarihi: 2026
  • Doi Numarası: 10.1016/j.est.2026.122249
  • Dergi Adı: Journal of Energy Storage
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, INSPEC
  • Anahtar Kelimeler: Carbon and economic evaluation, Energy and exergy analysis, Energy storage, Solar pond, Space heating
  • Çukurova Üniversitesi Adresli: Evet

Özet

This study experimentally investigates the thermal energy storage and delivery performance of an integrated system combining a salt-gradient solar pond (SGSP) and flat-plate solar collectors (FPSCs) for room heating. While previous research has explored solar pond-collector integration, this work uniquely provides a comprehensive experimental evaluation of the entire process from active solar charging to end-use heating under real winter conditions. The FPSCs transfer thermal energy into the Heat Storage Zone (HSZ) of the SGSP via an immersed heat exchanger, and stored energy is circulated to indoor radiators. Experiments conducted on February 21–22 under mass flow rates of 0.0186 kg/s and 0.0620 kg/s yielded energy efficiencies of 13.06% and 15.08%, and exergy efficiencies of 0.67% and 0.72%, respectively. The system prevented approximately 2.17–2.18 kg of daily CO₂ emissions and saved around $1.20 per day in equivalent electricity costs. The core novelty lies in the simultaneous quantitative assessment of energy, exergy, economic, and carbon-avoidance performance during a realistic space heating application, demonstrating the strong potential of the SGSP-FPSC system as a sustainable solar thermal energy storage technology for building heating.