Effect of eccentricity on melting behavior of paraffin in a horizontal tube-in-shell storage unit: An experimental study

YAZICI M., Avci M., AYDIN O., AKGUN M.

SOLAR ENERGY, cilt.101, ss.291-298, 2014 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 101
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1016/j.solener.2014.01.007
  • Dergi Adı: SOLAR ENERGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.291-298
  • Anahtar Kelimeler: Thermal energy storage, Tube-in-shell, Eccentricity, Paraffin, Melting, THERMAL-ENERGY STORAGE, PHASE-CHANGE MATERIAL, HEAT-TRANSFER ENHANCEMENT, LATENT-HEAT, STEARIC-ACID, PERFORMANCE, SYSTEM, ANNULUS, SOLIDIFICATION, WAXES
  • Karadeniz Teknik Üniversitesi Adresli: Evet

Özet

In this study, melting behavior of paraffin in a horizontal shell-and-tube type-storage unit is experimentally studied. Both the concentric and eccentric orientations of the inner tube according the center of the outer shell are considered. Three different values for the eccentricity from the center of the outer shell is investigated: e = 10, 20 and 30 mm besides the concentric geometry (e = 0). For each geometric orientation, effect of the inlet temperature on the melting behavior is also obtained. A special attention is paid to understand the melting behavior based on the temporal variation of temperature field inside PCM. Eccentricity is shown to respond much well to the melting behavior and hence enhance melting behavior due to intensified natural convection intensity inside PCM. (C) 2014 Elsevier Ltd. All rights reserved.