Experimental and numerical investigation of nanofluid heat transfer in helically coiled tubes at constant wall temperature using dispersion model
Farzan Akbaridoust, Milad Rakhsha, Abbas Abbassi, Majid Saffar-Awal
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | PERGAMON-ELSEVIER SCIENCE LTD | Published : 2013
In the present research, laminar, steady state flow in helically coiled tubes at a constant wall temperature was studied numerically and experimentally. Pressure drop and the convective heat transfer behavior of nanofluid were investigated. In the experimental section, a heat exchanger was designed, capable of providing constant wall temperature for coils with different curvature and torsion ratio for the ease of assembly. Pressure drop measurement and average convective heat transfer coefficient calculation were carried out. In the numerical study, the three dimensional governing equations were solved by finite difference method with projection algorithm using FORTRAN programming language. ..View full abstract
The authors would like to acknowledge Payamavaran Nanotechnology Fardanegar Company (PNFCo.) for preparation of nanofluid using EEW method with PNC1K setup. The authors also thank Iranian Nanotechnology Initiative Council and Mechanical Engineering Dept., Amirkabir University of Technology (Tehran polytechnic) for their financial supports through the setup construction and research implementation.