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Investigation of twisted tape inserted solar water heaters—heat transfer, friction factor and thermal performance results

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  • Kumar, A
  • Prasad, B.N

Abstract

Heat transfer in a solar water heater could be enhanced by means of twisted tapes, inserted inside the fluid flow tubes, which induce swirl flow and act as turbulence promoters. Experimental investigations for a solar water heater with twisted tape inserts having twist pitch to tube diameter ratio ranging from 3–12 have been carried out for varying mass flow rates. The results on heat transfer and friction data have been found to compare well with available results. Within the range of investigated parameters, the heat transfer in the twisted tape insert collectors has been found to increase by 18–70%, whereas the pressure drop increased by 87–132%, as compared to plane collectors. An expression correlating the Nusselt numbers in twisted tape and plane collectors, the twist pitch ratio has been developed in the form of Nus/Nu=1.3+2.88/y, which predicts the heat transfer within the range of the present investigation. Results conclude that such collectors would be preferable for higher grade energy collection as it is also at higher rate.

Suggested Citation

  • Kumar, A & Prasad, B.N, 2000. "Investigation of twisted tape inserted solar water heaters—heat transfer, friction factor and thermal performance results," Renewable Energy, Elsevier, vol. 19(3), pages 379-398.
    • Handle: RePEc:eee:renene:v:19:y:2000:i:3:p:379-398
    DOI: 10.1016/S0960-1481(99)00061-0
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    Cited by:

    1. Abdulhamed, Ali Jaber & Adam, Nor Mariah & Ab-Kadir, Mohd Zainal Abidin & Hairuddin, Abdul Aziz, 2018. "Review of solar parabolic-trough collector geometrical and thermal analyses, performance, and applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 91(C), pages 822-831.
    2. Ananth, J. & Jaisankar, S., 2014. "Investigation on heat transfer and friction factor characteristics of thermosiphon solar water heating system with left-right twist regularly spaced with rod and spacer," Energy, Elsevier, vol. 65(C), pages 357-363.
    3. Singla, Mohit & Hans, Vishavjeet Singh & Singh, Sukhmeet, 2022. "CFD analysis of rib roughened solar evacuated tube collector for air heating," Renewable Energy, Elsevier, vol. 183(C), pages 78-89.
    4. Sundar, L. Syam & Singh, Manoj K. & Punnaiah, V. & Sousa, Antonio C.M., 2018. "Experimental investigation of Al2O3/water nanofluids on the effectiveness of solar flat-plate collectors with and without twisted tape inserts," Renewable Energy, Elsevier, vol. 119(C), pages 820-833.
    5. Cruz-Peragon, F. & Palomar, J.M. & Casanova, P.J. & Dorado, M.P. & Manzano-Agugliaro, F., 2012. "Characterization of solar flat plate collectors," Renewable and Sustainable Energy Reviews, Elsevier, vol. 16(3), pages 1709-1720.
    6. Farshad, Seyyed Ali & Sheikholeslami, M., 2019. "Nanofluid flow inside a solar collector utilizing twisted tape considering exergy and entropy analysis," Renewable Energy, Elsevier, vol. 141(C), pages 246-258.
    7. Ho, Chii-Dong & Chen, Tsung-Ching & Tsai, Cheng-Jung, 2010. "Experimental and theoretical studies of recyclic flat-plate solar water heaters equipped with rectangle conduits," Renewable Energy, Elsevier, vol. 35(10), pages 2279-2287.
    8. Saravanan, A. & Senthilkumaar, J.S. & Jaisankar, S., 2016. "Experimental studies on heat transfer and friction factor characteristics of twist inserted V-trough thermosyphon solar water heating system," Energy, Elsevier, vol. 112(C), pages 642-654.
    9. Liu, S. & Sakr, M., 2013. "A comprehensive review on passive heat transfer enhancements in pipe exchangers," Renewable and Sustainable Energy Reviews, Elsevier, vol. 19(C), pages 64-81.
    10. Jaisankar, S. & Ananth, J. & Thulasi, S. & Jayasuthakar, S.T. & Sheeba, K.N., 2011. "A comprehensive review on solar water heaters," Renewable and Sustainable Energy Reviews, Elsevier, vol. 15(6), pages 3045-3050, August.
    11. Balaji, K. & Ganesh Kumar, P. & Sakthivadivel, D. & Vigneswaran, V.S. & Iniyan, S., 2019. "Experimental investigation on flat plate solar collector using frictionally engaged thermal performance enhancer in the absorber tube," Renewable Energy, Elsevier, vol. 142(C), pages 62-72.
    12. Alam, Tabish & Kim, Man-Hoe, 2018. "A comprehensive review on single phase heat transfer enhancement techniques in heat exchanger applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 81(P1), pages 813-839.
    13. Kumar, Rajneesh & Goel, Varun, 2021. "Unconventional solar air heater with triangular flow-passage: A CFD based comparative performance assessment of different cross-sectional rib-roughnesses," Renewable Energy, Elsevier, vol. 172(C), pages 1267-1278.
    14. Jaisankar, S. & Radhakrishnan, T.K. & Sheeba, K.N., 2009. "Studies on heat transfer and friction factor characteristics of thermosyphon solar water heating system with helical twisted tapes," Energy, Elsevier, vol. 34(9), pages 1054-1064.
    15. Borunda, Mónica & Garduno-Ramirez, Raul & Jaramillo, O.A., 2019. "Optimal operation of a parabolic solar collector with twisted-tape insert by multi-objective genetic algorithms," Renewable Energy, Elsevier, vol. 143(C), pages 540-550.
    16. Duan, Juan & Peng, Zeyu, 2022. "Numerical investigation of nano-enhanced phase change material melting in the 3D annular tube with spiral fins," Renewable Energy, Elsevier, vol. 193(C), pages 251-263.
    17. Balamurali Duraivel & Natarajan Muthuswamy & Saboor Shaik & Erdem Cuce & Abdulhameed Babatunde Owolabi & Hong Xian Li & Miroslava Kavgic, 2023. "Extensive Analysis of a Reinvigorated Solar Water Heating System Using Low-Density Polyethylene Glazing," Energies, MDPI, vol. 16(16), pages 1-24, August.
    18. Sakhaei, Seyed Ali & Valipour, Mohammad Sadegh, 2019. "Performance enhancement analysis of The flat plate collectors: A comprehensive review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 102(C), pages 186-204.
    19. Norouzi, Amir Mohammad & Siavashi, Majid & Ahmadi, Rouhollah & Tahmasbi, Milad, 2021. "Experimental study of a parabolic trough solar collector with rotating absorber tube," Renewable Energy, Elsevier, vol. 168(C), pages 734-749.
    20. Conroy, Tim & Collins, Maurice N. & Fisher, James & Grimes, Ronan, 2018. "Thermohydraulic analysis of single phase heat transfer fluids in CSP solar receivers," Renewable Energy, Elsevier, vol. 129(PA), pages 150-167.
    21. Jaramillo, O.A. & Borunda, Mónica & Velazquez-Lucho, K.M. & Robles, M., 2016. "Parabolic trough solar collector for low enthalpy processes: An analysis of the efficiency enhancement by using twisted tape inserts," Renewable Energy, Elsevier, vol. 93(C), pages 125-141.
    22. Sheikholeslami, Mohsen & Gorji-Bandpy, Mofid & Ganji, Davood Domiri, 2015. "Review of heat transfer enhancement methods: Focus on passive methods using swirl flow devices," Renewable and Sustainable Energy Reviews, Elsevier, vol. 49(C), pages 444-469.

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