Abstract




 
   

IJE TRANSACTIONS A: Basics Vol. 31, No. 1 (January 2018) 124-131    Article in Press

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  AN EXPERIMENTAL STUDY OF NANOFLUIDS OPERATED SHELL AND TUBE HEAT EXCHANGER WITH AIR BUBBLE INJECTION
 
G. Thakur, G. SINGH, M. Thakur and S. Kajla
 
( Received: April 18, 2017 – Accepted: November 30, 2017 )
 
 

Abstract    Shell and Tube heat exchangers are the heat exchangers that are most widely used in the industries and in other commercial purposes. There have been many techniques that have been utilised to enhance the heat transfer performance of the shell and tube heat exchangers. Air bubble injection is one of the promising and inexpensive techniques that can create turbulence in the fluids resulting in to enhancement of heat transfer characteristics of the shell and tube heat exchangers. In this paper, experimental study of heat transfer characteristics have been done by injecting air bubbles at tube inlet and through out the tube for 0.1%v/v and 0.2%v/v Al2O3 nanopartices concentraion .Results obtained at two different injection points for both the concentrations are compared with the case when no air bubble injection is done. The results showed the enhancement in the heat transfer characteristics with air bubble injection and volumetic concentration of nanoparticles. The maximum enhancement was found to be in the case where air bubbles are injected throughout the tube which is followed by the air bubble injection at the tube inlet and without air bubble injection. Morever,enhancement found to be more with 0.2%v/v than 0.1% v/v as the heat transfer charactesistics of nanofluids increase with increase in volumetric concentration of nanoparticles.

 

Keywords    Shell and Tube heat exchanger, Nanofluids, Heat transfer coefficient, Nusselt number

 

References    1. Kahrom, M., Haghparast, P. and Javadi, S.M., "Optimization of heat transfer enhancemnt of flat plate based on pereto genetic algorithm", International Journal of Engineering, Transaction A: Basics, Vol. 23, No. 2, (2010), 177-190.2. Ahmadzadehtalatapeh, M. and Yau, Y.H., "Energy conservation potential of heat pipe heat exchanger: Exprimental study and predictions", International Journal of Engineering Transection B: Applications, Vol. 25, No. 3, (2012), 193-199.3. Cancan, Z., Yafei, L., Li, W., Ke, X. and Jinxing, W., "Review heat exchanger: Research development of self-rotating inserts in heat exchanger tubes", International Journal of Engineering-Transactions A: Basics, Vol. 27, No. 10, (2014), 15-26.4. C. Gabillet, C. Colin, J. Fabre, “Experimental Study of Bubble Injection in a Turbulent Boundary Layer”, International Journl of Multiphase Flow, 28, 2002, pp 553-578.5. Houshmand, F. and Peles, Y., "Impact of flow dynamics on the heat transfer of bubbly flow in a microchannel", Journal of Heat Transfer, Vol. 136, No. 2, (2014).6. Celata, G., Chiaradia, A., Cumo, M. and D’annibale, F., "Heat transfer enhancement by air injection in upward heated mixed convection flow of water", International Journal of Multiphase Flow, Vol. 25, No. 6, (1999), 1033-1052.7. Dizaji, S., "Heat transfer enhancement due to air bubble injection into a horizontal double pipe heat exchanger", International Journal of Automotive Engineering, Vol. 4, No. 4, (2014), 902-910.8. Delauré, Y., Chan, V. and Murray, D., "A simultaneous piv and heat transfer study of bubble interaction with free convection flow", Experimental Thermal and Fluid Science, Vol. 27, No.8, (2003), 911-926.9. Jacob, B., Olivieri, A., Miozzi, M., Campana, E.F. and Piva, R., "Drag reduction by microbubbles in a turbulent boundary layer", Physics of Fluids (1994-present), Vol. 22, No. 11, (2010),115104.10. A.Nandan and G.singh,“ Experimental Study of Heat Transfer Rate in a Shell and Tube Heat Exchanger with Air Bubble Injection” IJE TRANSACTIONS B: Applications Vol. 29, No. 8, (August 2016), 1160-1166.11. D.Q. Kern, Process Heat Transfer, McGraw-Hills, New York, 1950.12. T.Baghban, S.N., Moghiman, M. and Salehi, E., "Thermal analysisof shell-side flow of shell-and tube heat exchanger using experimental and theoreticalmethods", International Journal of Engineering, Vol. 13, No. 1, (2000), 15.13. Xiaohao Wei, Haitao Zhu , Tiantian Kong , Liqiu Wang, "Synthesis and thermal conductivity of Cu2O nanofluids” International Journal of Heat and Mass Transfer 52 (2009) 4371–4374K. 14. Rohini Priya, K.S. Suganthi, K.S. Rajan, "Transport properties of ultra-low concentration CuO–water nanofluids containing non-spherical nanoparticles” International Journal of Heat and Mass Transfer 55 (2012) 4734–474315 L. Syam Sundar , Md. Hashim Farooky , S. Naga Sarada , M.K. Singh, "Experimental thermal conductivity of ethylene glycol and water mixture based low volume concentration of Al2O3 and CuO nanofluids”  International Communications in Heat and Mass Transfer 41 (2013) 41–4616. Yajie Ren1, Huaqing Xie2,3 and An Cai2, "Effective thermal conductivity of nanofluids containing spherical nanoparticles” J. Phys. D: Appl. Phys. 38 (2005) 3958–396117. S.M. Fotukian, M. Nasr Esfahany, "Experimental study of turbulent convective heat transfer and pressure drop of dilute CuO/water nanofluid inside a circular tube” International Communications in Heat and Mass Transfer 37 (2010) 214–219.


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