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Experimental and numerical study of nanofluid in heat exchanger fitted by modified twisted tape: exergy analysis and ANN prediction model

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Abstract

Present study provides an experimental investigation of the exergetic efficiency due to the flow and heat transfer of nanofluids in different geometries and flow regimes of the double pipe heat exchangers. The experiments with different Geometrical Progression Ratio (GPR) of twists as the new modified twisted tapes and different nanofluid concentration were performed under similar operation condition. Pitch length of the proposed twisted tapes and consequently the twist ratios changed along the twists with respect to the Geometrical Progression Ratio (GPR) whether reducer (RGPR < 1) or increaser (IGPR > 1). Regarding the experimental data, utilization of RGPR twists together with nanofluids tends to increase exergetic efficiency. Since the Prediction of exergetic efficiency from experimental process is complex and time consuming, artificial neural networks for identification of the relationship, which may exist between the thermal and flow parameters and exergetic efficiency, have been utilized. The network input consists of five parameters \( (\text{Re} ,\Pr ,\varphi , {\rm Tr}, {\rm GPR}) \) that crucially dominate the heat transfer process. The results proved that the introduced ANN model is reliable and capable in proposing a proper development plan for a heat exchanger and/or to determine the optimal plan of operation for heat transfer process.

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References

  1. Roslan R, Saleh H, Hashim I (2011) Buoyancy-driven heat transfer in nanofluid filled trapezoidal enclosure with variable thermal conductivity and viscosity. Numer Heat Tr A-Appl 60(10):867–882

    Article  Google Scholar 

  2. Duangthongsuk W, Wongwises S (2009) Measurement of temperature-dependent thermal conductivity and viscosity of TiO2–water nanofluids. Exp Therm Fluid Sci 33(4):706–714

    Article  Google Scholar 

  3. Prasher R, Song D, Wang J, Phelan P (2006) Measurements of nanofluid viscosity and its implications for thermal applications. Appl Phys Lett 89:133108. doi:10.1063/1.2356113

    Article  Google Scholar 

  4. Garg J, Poudel B, Chiesa M, Gordon JB, Ma JJ, Wang JB, Ren ZF, Kang YT, Ohtani H, Nanda J, McKinley GH, Chen G (2008) Enhanced thermal conductivity and viscosity of copper nanoparticles in ethylene glycol nanofluids. J Appl Phys 103(7):074301–0743016

    Article  Google Scholar 

  5. Eiamsa-ard S, Thianpong C, Promvonge P (2006) Experimental investigation of heat transfer and flow friction in a circular tube fitted with regularly spaced twisted tape elements. Int Commun Heat Mass 33:1225–1233

    Article  Google Scholar 

  6. Chang SW, Jan YJ, Liou JS (2007) Turbulent heat transfer and pressure drop in tube fitted with serrated twisted-tape. Int J Therm Sci 46(5):506–518

    Article  Google Scholar 

  7. Chang SW, Yang TL, Liou JS (2007) Heat transfer and pressure drop in tube with broken twisted-tape insert. Exp Therm Fluid Sci 32(2):489–501

    Article  Google Scholar 

  8. Rahimi M, Shabanian SR, Alsairafi AA (2009) Experimental and CFD studies on heat transfer and friction factor characteristics of a tube equipped with modified twisted tape inserts. Chem Eng Process 48:762–770

    Article  Google Scholar 

  9. Al-Fahed S, Chamra LM, Chakroun W (1998) Pressure drop and heat transfer comparison for both microfin tube and twisted-tape inserts in laminar flow. Exp Therm Fluid Sci 18:323–333

    Article  Google Scholar 

  10. Zimparov V (2002) Enhancement of heat transfer by a combination of a single-start spirally corrugated tubes with a twisted-tape. Exp Therm Fluid Sci 25:535–546

    Article  Google Scholar 

  11. Bharadwaj P, Khondge AD, Date AW (2009) Heat transfer and pressure drop in a spirally grooved tube with twisted tape insert. Int J Heat Mass Transf 52(7–8):1938–1944

    Article  Google Scholar 

  12. Sivashanmugam P, Nagarajan PK, Suresh S (2008) Experimental studies on heat transfer and friction factor characteristics of turbulent flow through a circular tube fitted with right and left helical screw-tape inserts. Chem Eng Commun 195(8):977–987

    Article  Google Scholar 

  13. Gaggioli RA (1998) Available energy and exergy. Int J Appl Thermodyn 1:1

    Google Scholar 

  14. Pawan KS, Anoop KB, Sundararajan T, Sarit SK (2010) Entropy generation due to flow and heat transfer in nanofluids. Int J Heat Mass Tran 53:4757–4767

    Article  MATH  Google Scholar 

  15. Torabi M, Aziz A (2012) Entropy generation in a hollow cylinder with temperature dependent thermal conductivity and internal heat generation with convective–radiative surface cooling. Int Commun Heat Mass 39(10):1487–1495

    Article  Google Scholar 

  16. Leong KY, Saidur R, Mahlia TMI, Yau YH (2012) Entropy generation analysis of nanofluid flow in a circular tube subjected to constant wall temperature. Int Commun Heat Mass 39:1169–1175

    Article  Google Scholar 

  17. Leong KY, Saidur R, Khairulmaini M, Michael Z, Kamyar A (2012) Heat transfer and entropy analysis of three different types of heat exchangers operated with nanofluids. Int Commun Heat Mass 39:838

    Article  Google Scholar 

  18. Shahi M, Mahmoudi AH, Raouf AH (2011) Entropy generation due to natural convection cooling of a nanofluid. Int Commun Heat Mass 38:972–983

    Article  Google Scholar 

  19. Pak BC, Cho YI (1998) Hydrodynamic and heat transfer study of dispersed fluids with submicron metallic oxide particles. Exp Heat Transf 11:151

    Article  Google Scholar 

  20. Xuan Y, Roetzel W (2000) Conceptions for heat transfer correlation of nanofluids. Int J Heat Mass Trans 43:3701–3707

    Article  MATH  Google Scholar 

  21. Yu W, Choi SUS (2003) The role of interfacial layers in the enhanced thermal conductivity of nanofluids: a renovated Maxwell model. J Nanoparticle Res 5:167

    Article  Google Scholar 

  22. Sharma KV, Sarma PK, Azmi WH, Mamat R, Kadirgama K (2012) Correlations to predict friction and forced convection heat transfer coefficients of water based nanofluids for turbulent flow in a tube. Int J Microscale Nanoscale Therm Fluid Transp Phenom 3(4):1–25

    Google Scholar 

  23. Azmi WH, Sharma KV, Mamat R, Anuar S (2014) Turbulent forced convection heat transfer of nanofluids with twisted tape insert in a plain tube. Energy Proced 52:296–307

    Article  Google Scholar 

  24. Incropera FP, Witt PD, Bergman TL, Lavine AS (2006) Fundamentals of heat and mass transfer. Wiley, Hoboken

    Google Scholar 

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Authors and Affiliations

  1. Department of Chemistry, Arak Branch, Islamic Azad University, Arak, Iran

    Heydar Maddah & Nahid Ghasemi

  2. Department of Chemistry, Saveh Branch, Islamic Azad University, Saveh, Iran

    Bahram Keyvani & Ramin Cheraghali

Authors
  1. Heydar Maddah
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  2. Nahid Ghasemi
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  3. Bahram Keyvani
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  4. Ramin Cheraghali
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Correspondence to Nahid Ghasemi.

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Maddah, H., Ghasemi, N., Keyvani, B. et al. Experimental and numerical study of nanofluid in heat exchanger fitted by modified twisted tape: exergy analysis and ANN prediction model. Heat Mass Transfer 53, 1413–1423 (2017). https://doi.org/10.1007/s00231-016-1906-2

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  • DOI: https://doi.org/10.1007/s00231-016-1906-2

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