Heat exchangers have its major application in
automobile, air condition, refrigerator, power plants, and many others. Heat
transfer characteristics and performance of Copper spiral heat exchanger are
investigated and compared with pure water. Nanofluid can enhance
thermos-physical properties. Experiment is carried out for water based SiO2 Nanofluid with 15nm average sized
nanoparticle at varying air velocity and mass flow rate of fluid to investigate
its effect on heat transfer coefficient. From the experimental data, a closed
form solution for Nusselt number has been calculated using ∈-NTU method. A new correlation has been proposed as
a function of Reynolds number and Prandtl number. The heat transfer rate,
effectiveness, has been significantly higher compared to pure water and with increasing volume fraction of nanoparticles.
References
[1]
Ramesh, A., Prasanth, M.J.A. and Kirthivasan, A. (2015) Heat Transfer Studies on Air Cooled Spiral Radiator with Circumferential Fins. Procedia Engineering, 127, 333-339. https://doi.org/10.1016/j.proeng.2015.11.378
[2]
Bhogare, R.A. and Kothawale, B.S. (2013) A Review on Applications and Challenges of Nano-Fluids as Coolant in Automobile Radiator. International Journal of Scientific and Research Publications, 3, No. 8.
[3]
Yu, W. and Xie, H. (2012) A Review on Nanofluids: Preparation, Stability Mechanisms, and Applications. Journal of Nanomaterials, 2012, Article ID: 435873. https://doi.org/10.1155/2012/435873
[4]
Sawant, S., Shastri, P.S. and Quazi, P.I. (2017) Experimental Study & Heat Transfer Analysis on Spiral Radiator with Circumferential Fins. International Engineering Research Journal.
[5]
Sivashanmugam, P. (2012) Application of Nanofluids in Heat Transfer. INTECH Open Access Publisher, 411-436. https://doi.org/10.5772/52496
[6]
Naphon, P. and Wongwises, S. (2005) A Study of the Heat Transfer Characteristics of a Compact Spiral Coil Heat Exchanger under Wet-Surface Conditions. Experimental Thermal and Fluid Science, 29, 511-521. https://doi.org/10.1016/j.expthermflusci.2004.07.002
[7]
Carl, M., Guy, D., Leyendecker, B., Miller, A. and Fan, X. (2012) The Theoretical and Experimental Investigation of the Heat Transfer Process of an Automobile Radiator. ASEE Gulf Southwest Annual Conference,.
[8]
Patel, J. and Mavani, A. (2014) Effect of Nanofluids and Mass Flow Rate of Air on Heat Transfer Rate in Automobile Radiator by CFD Analysis. IJRET: International Journal of Research in Engineering and Technology, 3, No. 6.
[9]
Bhimani, V.L., Rathod, D.P.P. and Sorathiya, P.A.S. (2013) Experimental Study of Heat Transfer Enhancement Using Water Based Nanofluids as a New Coolant for Car Radiators. International Journal of Emerging Technology and Advanced Engineering, 3, No. 6.
[10]
Sundar, L.S., Singh, M.K., Bidkin, I. and Sousa, A.C. (2014) Experimental Investigations in Heat Transfer and Friction Factor of Magnetic Ni Nanofluid Flowing in a Tube. International Journal of Heat and Mass Transfer, 70, 224-234. https://doi.org/10.1016/j.ijheatmasstransfer.2013.11.004
