An experimental investigation of heat transfer of Fe2O3/Water nanofluid in a double pipe heat exchanger

Document Type : Reasearch Paper


1 Young Researchers and Elite Club, Shahrood Branch, Islamic Azad University, Shahrood, Iran

2 Department of Chemistry, Sciences Faculty, Arak Branch, Islamic Azad University, Arak, Iran

3 Department of Chemical Engineering, Faculty of Engineering, Arak University, Arak, Iran

4 Assistant Professor, Department of Mechanical Engineering, Shahrood branch, Islamic Azad university, Shahrood, Iran

5 Department of Chemistry, Sciences Faculty, North Tehran Branch, Islamic Azad University, North Tehran, Iran.



One way to increase the heat transfer is to use perforated twisted tapes with different hole diameters, which largely improve heat transfer with an increase in the heat transfer area at the constant volume and more mixed flow. In the previous studies, the effect of nanofluids with perforated twisted tapes is less studied. In this work, the performance of water / iron oxide nanofluid in a double pipe heat exchanger with perforated twisted tapes is investigated under turbulent flow regime. Reynolds number considered is in the range between 2500 to 20500. Iron oxide nanoparticles with diameter of 15 nm are used as nanofluid with the concentration range from 0.12 to 0.2% by volume. The results showed that the addition of nanoparticles increases the heat transfer and the Nusselt number. Also, reducing the twist ratio (H/D=2.5) of perforated twisted tape and using the nanofluid with concentration of 0.2%v/v increase this value by 130%.


Main Subjects

[1]  Sivashanmugam P., (2012), Application of Nanofluids in Heat Transfer, Mechanical, 52496.
[2]  Aghayari R., (2014), Heat Transfer of Nanofluid in a Double Pipe Heat Exchanger, International Scholarly Research Notices, 2014: Article ID 736424, 7 pages.
[3]  Aghayari R., Maddah H., Ashori F., Hakiminejad A., Aghili M., ( 2014), Effect of nanoparticles on heat transfer in mini doublepipe heat exchangers in turbulent flow. Heat and Mass Transfer. 51: 301-306.
[4]  Maddah H., (2014), Effect of Twisted-Tape Turbulators and Nanofluid on Heat Transfer in a Double Pipe Heat Exchanger. J. Eng. 2014: Article ID 920970, 9 pages.
[5]  Maddah H., (2014), Experimental Study of Al2O3/Water Nanoûuid Turbulent Heat Transfer Enhancement in the Horizontal Double Pipes ûtted with Modified Twisted Tapes. Int. J. Heat and Mass Trans. 78: 1042-1054.
[6]  Sheikholeslami M., (2012), Magnetic field effects on natural convection around a horizontal circular cylinder inside a square enclosure filled with nanofluid. Int. Comm. Heat and Mass Trans. 39: 978-986..
[7]  Domeiri Ganji D., (2015), Nanofluid flow and heat transfer between parallel plates considering Brownian motion using DTM, Comput. Methods Appl. Mech. Eng. 283: 651-663.
[8]  Soleimani L., (2012), Natural convection heat transfer in a nanofluid filled semi-annulus enclosure. Int. Comm. Heat and Mass Trans. 39: 565-574.
[9]  Domeiri Ganji D., (2015), Ferrofluid flow and heat transfer in a semi annulus enclosure in the presence of magnetic source considering thermal radiation. J. Taiwan Inst. Chem. Eng. 47: 6-17.
[10] Sheikholeslami M., (2015), Lattice Boltzmann Method for simulation of magnetic field Effect on hydrothermal behavior of nanofluid in a cubic cavity. Physica A: Mech. Applic. 432: 58-70.
[11] Sheikholeslami M., Rashidi M. M., (2015), Effect of space dependent magnetic field on free convection of Fe3O4-water nanofluid. J. Taiwan Ins. Chem. Eng. 2015: 1-10.
[12] Hee Chun B., (2008), Effect of alumina nanoparticles in the fluid on heat transfer in double-pipe heat exchanger system. Korean J. Chem. Eng. 25: 966-971.
[13] Duangthongsuk W., (2010), An experimental study on the heat transfer performance and pressure drop of TiO2-water nanofluids flowing under a turbulent flow regime. Int. J. Heat and Mass Transf. 53: 334-344.
[14] Chon C. H., Kihm K. D., Lee S. P., Choi S. U. S., (2005), Empirical correlation finding the role of temperature and particle size for nanofluid (Al2O3) thermal conductivity enhancement. Appl. Phys. Lett. 87: 153107-153110.
[15] Raja M., (2013), Effect of heat transfer enhancement and NOx emission using Al2O3/water nanofluid as coolant in CI engine. Indian J. Eng. Mater. Sci. 20: 443-449.
[16] Pirhayati M., (2014), Convective Heat Transfer of Oil based Nanofluid Flow inside a Circular Tube. IJE. Trans act. B: Appl. 27: 341-348.
[17] Sudarmadji S., (2014), Effects of Cooling Process of Al2O3-water Nanofluid on Convective Heat Transfer. FME Transact. 42: 155-161.
[18] Timofeeva E. V., Gavrilov A. N., McCloskey J. M., Tolmachev Y. V., (2007), Thermal conductivity and particle agglomeration in alumina nanofluids: experiment and theory. Phys. Rev. 76: 0612031-0612036.
[19] Wasp F. J., (1977), Solid.Liquid Slurry Pipeline Transportation. Trans Tech. Berlin.
[20] Choi X., (1995), US: Enhancing thermal conductivity of fluid with nanoparticles. ASME FED. 66: 99-105.
[21] Brinkman H. C., (1952), The viscosity of concentrated suspensions and solution. J. Chem. Phys. 20: 571-581.
[22] SyamSundar L., (2011), Laminar Convective Heat Transfer and fraction factor of AL2O3 nanofluid in circular tube fited with twisted tape inserts. Int. J. Automot. Mech.Eng. 3: 265-278.
[23] Gnielinski V., (1976), New equations for heat and mass transfer in turbulent pipe and channel flow. Int. Chem.Eng. 16: 359-368.