Experimental and numerical study of the effect of integrating plus-shaped perforated baffles to solar air collector in drying application

Khanlari A., Guler H. O., Tuncer A. D., Sirin C., Bilge Y. C., YILMAZ Y., ...Daha Fazla

RENEWABLE ENERGY, cilt.145, ss.1677-1692, 2020 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 145
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1016/j.renene.2019.07.076
  • Dergi Adı: RENEWABLE ENERGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Aquatic Science & Fisheries Abstracts (ASFA), CAB Abstracts, Communication Abstracts, Compendex, Environment Index, Geobase, Greenfile, Index Islamicus, INSPEC, Pollution Abstracts, Public Affairs Index, Veterinary Science Database, DIALNET, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.1677-1692
  • Anahtar Kelimeler: Solar collector, Plus-shaped, Perforated baffle, Performance, Drying, Celery root, TRANSFER-COEFFICIENT, MOISTURE-CONTENT, EXERGY ANALYSIS, STORAGE-SYSTEM, MASS-TRANSFER, HEAT-PUMP, PERFORMANCE, ENERGY, SIMULATION, KINETICS
  • Akdeniz Üniversitesi Adresli: Evet

Özet

Solar thermal systems like solar water and solar air collectors (SCs) are generally used because of their simple structure and high thermal efficiency. Solar air collectors could be utilized in drying applications because they are easy applicable and economical. In this study, a novel parallel-pass SC with double baffles (PPSCDB), parallel-pass SC with baffles (PPSCB) and parallel-pass SC (PPSC) without baffle have been designed and tested for drying application. Baffles have been manufactured in plus-shaped and perforated to achieve high thermal performance. The performance of solar collectors has been analyzed numerically and experimentally. In addition, a drying chamber has been coupled with solar air collectors. Celery (Apium Graveolens L.) root has been dried as a product and dried samples' quality has been analyzed experimentally. The experiments have been conducted at 0.009 kg/s and 0.011 kg/s air mass flow rates. According to the experimental findings, average thermal efficiencies of PPSC, PPSCB and PPSCDB are in the range of 62.10-66.32%, 65.72-69.62% and 71.12-75.11%, respectively. The highest instantaneous efficiency was obtained as 84.30% in higher mass flow rate in PPSCDB. Also, maximum deviation between experimental and numerical results was 9.5%. (c) 2019 Elsevier Ltd. All rights reserved.