Heat Transfer Performance of Different Nanofluids Flows in a Helically Coiled Heat Exchanger

Abstract:

Helically coiled heat exchangers are globally used in various industrial applications for their high heat transfer performance and compact size. Nanofluids can provide excellent thermal performance of this type of heat exchangers. In the present study, the effect of different nanofluids on the heat transfer performance in a helically coiled heat exchanger is examined. Four different types of nanofluids CuO/water, Al₂O₃/water, SiO₂/water, and ZnO/water with volume fractions 1 vol.% to 4 vol.% was used throughout this analysis and volume flow rate was remained constant at 3 LPM. Results show that the heat transfer coefficient is high for higher particle volume concentration of CuO/water, Al₂O₃/water and ZnO/water nanofluids, while the values of the friction factor and pressure drop significantly increase with the increase of nanoparticle volume concentration. On the contrary, low heat transfer coefficient was found in higher concentration of SiO₂/water nanofluids. The highest enhancement of heat transfer coefficient and lowest friction factor occurred for CuO/water nanofluids among the four nanofluids. However, highest friction factor and lowest heat transfer coefficient were found for SiO₂/water nanofluids. The results reveal that, CuO/water nanofluids indicate significant heat transfer performance for helically coiled heat exchanger systems though this nanofluids exhibits higher pressure drop.

• Periodical: Advanced Materials Research (Volume 832)
• Pages: 160-165
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.832.160
• Online since: November 2013
• Authors: Mohammad Alam Khairul, Rahman Saidur, Altab Hossain, Mohammad Abdul Alim, Islam Mohammed Mahbubul
• Keywords: Coiled Tube, Friction Factor, Heat Transfer Enhancement, Nanofluid, Pressure Drop

References

[1] S.U.S Choi, Enhancing thermal conductivity of fluids with nanoparticles, in: D.A. Siginer, H.P. Wang (Eds.), Developments and Applications of Non-Newtonian Flows, ASME, New York, 1995, pp.99-105.

[2] X. Wang, X. Xu, S.U.S Choi, Thermal conductivity of nanoparticle-fluid mixture, J. Thermophys. Heat Transf. 13 (1999) 474-480.

[3] S. Lee, S.U.S Choi, S. Li, J.A. Eastman, Measuring thermal conductivity of fluids containing oxide nanoparticles, J. Heat Transfer. 121 (1999) 280-289.

DOI: 10.1115/1.2825978

[4] S.K. Das, N. Putra, P. Thiesen, W. Roetzel, Temperature dependence of thermal conductivity enhancement for nanofluids, J. Heat Transfer. 125 (2003) 567-574.

DOI: 10.1115/1.1571080

[5] D. Prabhanjan, G. Raghavan, T. Rennie, Comparison of heat transfer rates between a straight tube heat exchanger and a helically coiled heat exchanger, Int. Commun. Heat Mass Transfer. 29 (2002) 185-191.

DOI: 10.1016/s0735-1933(02)00309-3

[6] M. Yasuo, N. Wataru, Study on forced convective heat transfer in curved pipes:(1st report, laminar region), Int. J. Heat Mass Transfer. 8 (1965) 67-82.

DOI: 10.1016/0017-9310(65)90098-0

[7] C. Kalb, J. Seader, Heat and mass transfer phenomena for viscous flow in curved circular tubes, Int. J. Heat Mass Transfer. 15 (1972) 801-817.

DOI: 10.1016/0017-9310(72)90122-6

[8] N. Jamshidi, M. Farhadi, D.D. Ganji, K. Sedighi, Experimental analysis of heat transfer enhancement in shell and helical tube heat exchangers, Appl. Therm. Eng. 51 (2012) 644-652.

DOI: 10.1016/j.applthermaleng.2012.10.008

[9] M. Raja, R.M. Arunachalam, S. Suresh, Experimental studies on heat transfer of alumina/water nanofluid in a shell and tube heat exchanger with wire coil insert, Int. J. Mech. Mater. Eng. 7 (2012) 16-23.

[10] H.A. Mohammed, H.A. Hasan, M.A. Wahid, Heat transfer enhancement of nanofluids in a double pipe heat exchanger with louvered strip inserts, Int. Commun. Heat Mass Transfer. 40 (2013) 36-46.

DOI: 10.1016/j.icheatmasstransfer.2012.10.023

[11] J.C. Maxwell, A treatise on electricity and magnetism, Clarendon Press, 1881.

[12] A. Einstein, Investigation on the Theory of Brownian Motion, Dover, New York, 1956.

[13] Gherasim, G. Roy, C.T. Nguyen, D. Vo-Ngoc, Experimental investigation of nanofluids in confined laminar radial flows, Int. J. Therm. Sci. 48 (2009) 1486-1493.

DOI: 10.1016/j.ijthermalsci.2009.01.008

[14] Y. Xuan,W. Roetzel, Conceptions for heat transfer correlation of nanofluids, Int. J. Heat Mass Transfer. 43 (2000) 3701-3707.

DOI: 10.1016/s0017-9310(99)00369-5

[15] P.M. Kumar, J. Kumar, S. Suresh, Heat Transfer and Friction Factor Studies in Helically Coiled Tube using Al2O3/water Nanofluid, Eur. J. Sci. Res. 82 (2012) 161-172.

DOI: 10.1007/s12206-012-1206-9

[16] N. Kannadasan, K. Ramanathan, S. Suresh, Comparison of heat transfer and pressure drop in horizontal and vertical helically coiled heat exchanger with CuO/water based nano fluids, Exp. Therm. Fluid Sci. 42 (2012) 64-70.

DOI: 10.1016/j.expthermflusci.2012.03.031

[17] M.R. Sohel, R. Saidur, M.F.M. Sabri, M. Kamalisarvestani, M.M. Elias, A. Ijam, Investigating the heat transfer performance and thermophysical properties of nanofluids in a circular micro-channel, Int. Commun. Heat Mass Transfer. 42 (2013) 75-81.

DOI: 10.1016/j.icheatmasstransfer.2012.12.014

[18] S.M. Hashemi, M.A. Akhavan-Behabadi, An empirical study on heat transfer and pressure drop characteristics of CuO–base oil nanofluid flow in a horizontal helically coiled tube under constant heat flux, Int. Commun. Heat Mass Transfer. 39 (2012) 144-151.

DOI: 10.1016/j.icheatmasstransfer.2011.09.002