An experimental comparison of water based alumina and silica nanofluids heat transfer in laminar flow regime

Ahmad A., Mansour K., Masoud D.

Journal of Central South University, cilt.20, sa.12, ss.3582-3588, 2013 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 20 Sayı: 12
  • Basım Tarihi: 2013
  • Doi Numarası: 10.1007/s11771-013-1884-1
  • Dergi Adı: Journal of Central South University
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.3582-3588
  • Anahtar Kelimeler: convection, forced convection, heat transfer, nano scale heat transfer
  • İstanbul Gelişim Üniversitesi Adresli: Hayır

Özet

Experimental investigations were carried out to determine the convective heat transfer performance and pressure drop of Al2O3/water and SiO2/water nanofluids flowing through a circular tube. Measurements show that the addition of small amounts of nano-sized Al 2O3 particles to the base fluid increases heat transfer coefficients considerably, while the result for the silica nanofluids contradicts with the alumina nanofluids and this leads to some interesting results. In the case of alumina nanofluids, an average increase of 16% in convective heat transfer coefficient is observed with an average penalty of 28% in pressure drop. Moreover, flow resistance increases significantly compared to the base fluid even at very low concentrations of nanofluids. Finally, measured heat transfer coefficients are compared with predicted ones from the correlation of Shah under the same conditions. © 2013 Central South University Press and Springer-Verlag Berlin Heidelberg.