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Comparison of pinned and finned tubes in a phase change thermal energy storage system using CFD

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  • Tay, N.H.S.
  • Bruno, F.
  • Belusko, M.

Abstract

An experimental validation for a computational fluid dynamics (CFD) model for tubes coiled in a phase change thermal energy storage system has been conducted. Using the validated CFD model, three CFD models have been developed. The first model was developed having pins embedded on a tube with heat transfer fluid (HTF) flowing in it, with PCM surrounding the tube. Different configurations of pins on the tube have been analysed. The second model developed is similar to the first model; however, fins were embedded instead of pins. Different configurations of fins on the tube were also investigated. The last model developed was a plain copper tube surrounded by PCM with HTF flowing in it. This model was used as a benchmark for comparison for the first two models. The models were analysed for the freezing process. From this study, it was concluded that fins on the tube is better than pins on the tube. The paper gives details of the CFD models and presents the results obtained from simulations carried out using these models.

Suggested Citation

  • Tay, N.H.S. & Bruno, F. & Belusko, M., 2013. "Comparison of pinned and finned tubes in a phase change thermal energy storage system using CFD," Applied Energy, Elsevier, vol. 104(C), pages 79-86.
    • Handle: RePEc:eee:appene:v:104:y:2013:i:c:p:79-86
    DOI: 10.1016/j.apenergy.2012.10.040
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    References listed on IDEAS

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    1. Agyenim, Francis & Eames, Philip & Smyth, Mervyn, 2010. "Heat transfer enhancement in medium temperature thermal energy storage system using a multitube heat transfer array," Renewable Energy, Elsevier, vol. 35(1), pages 198-207.
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    3. Liu, Ming & Saman, Wasim & Bruno, Frank, 2012. "Development of a novel refrigeration system for refrigerated trucks incorporating phase change material," Applied Energy, Elsevier, vol. 92(C), pages 336-342.
    4. Castell, A. & Belusko, M. & Bruno, F. & Cabeza, L.F., 2011. "Maximisation of heat transfer in a coil in tank PCM cold storage system," Applied Energy, Elsevier, vol. 88(11), pages 4120-4127.
    5. Hawlader, M. N. A. & Uddin, M. S. & Khin, Mya Mya, 2003. "Microencapsulated PCM thermal-energy storage system," Applied Energy, Elsevier, vol. 74(1-2), pages 195-202, January.
    6. Tay, N.H.S. & Belusko, M. & Bruno, F., 2012. "An effectiveness-NTU technique for characterising tube-in-tank phase change thermal energy storage systems," Applied Energy, Elsevier, vol. 91(1), pages 309-319.
    7. Amin, N.A.M. & Bruno, F. & Belusko, M., 2012. "Effectiveness–NTU correlation for low temperature PCM encapsulated in spheres," Applied Energy, Elsevier, vol. 93(C), pages 549-555.
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