3-D numerical study on the correlation between variable inclined fin angles and thermal behavior in plate fin-tube heat exchanger

Sahin H. M., Dal A. R., Baysal E.

APPLIED THERMAL ENGINEERING, cilt.27, ss.1806-1816, 2007 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 27
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1016/j.applthermaleng.2007.01.011
  • Dergi Adı: APPLIED THERMAL ENGINEERING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1806-1816
  • Anahtar Kelimeler: plate tin-tube exchangers, heat transfer enhancement, pressure drop, numerical simulation, CFD, FRICTION CHARACTERISTICS, CONTACT CONDUCTANCE, PRESSURE-DROP
  • Gazi Üniversitesi Adresli: Evet

Özet

In this study, the heat transfer enhancement and pressure drop values of seven different fin angles with plain fin-tube heat exchangers were investigated. The numerical simulation of the fin-tube heat exchanger was performed by using a three dimensional (3-D) numerical computation technique. Therefore, a CFD computer code, the FLUENT was used to solve the equation for the heat transfer and pressure drop analyses in the fin-tube heat exchanger. The model drawing was created and meshed by using GAMBIT software. The heat transfer and pressure drop values of the vertical fin angle (theta = theta degrees) were provided to compare with variable inclined fin angles (theta = 5 degrees, 10 degrees, 15 degrees, 20 degrees, 25 degrees, 30 degrees). The heat transfer values were normalized to compare all cases. For inclined fin angle theta = 30 degrees, which is the optimum angle, the maximum heat transfer enhancement per segment was obtained 1.42 W (the normalized value 105.24%), the maximum loss power associated with pressure drop per segment was only 0.54 mW. (C) 2007 Elsevier Ltd. All rights reserved.