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Numerical simulation and exergetic performance assessment of charging process in encapsulated ice thermal energy storage system

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  • MacPhee, David
  • Dincer, Ibrahim
  • Beyene, Asfaw

Abstract

The solidification process in encapsulated ice thermal energy storage (EITES) system is simulated for water-filled capsules while neglecting storage tank wall effects and heat penetration. Energy and exergy efficiencies were calculated while varying capsule shape, inlet Heat Transfer Fluid (HTF) temperature as well as HTF flow rate. 105 test cases are conducted including seven geometries, five inlet HTF temperatures, and three HTF flow rates. It was found that the energy efficiencies did not accurately reflect system performance, and in all cases, were found to be above 99.96%. However, exergy efficiencies ranged from 78 to 92%, and provided better insight into system losses. The results suggest that an effective way to increase system efficiency is to increase inlet HTF temperature; considerable efficiency gains are possible by setting inlet HTF temperature slightly below solidification temperature. Varying capsule geometry had inconsistent effects on the efficiency, different geometries being optimal in different situations. Surprisingly, viscous dissipation had very little effect on the exergy efficiency and was a source of very little entropy generation. Thus, EITES designers could increase both flow rate and inlet HTF temperature in order to achieve full system charging in an acceptable amount of time.

Suggested Citation

  • MacPhee, David & Dincer, Ibrahim & Beyene, Asfaw, 2012. "Numerical simulation and exergetic performance assessment of charging process in encapsulated ice thermal energy storage system," Energy, Elsevier, vol. 41(1), pages 491-498.
    • Handle: RePEc:eee:energy:v:41:y:2012:i:1:p:491-498
    DOI: 10.1016/j.energy.2012.02.042
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    Cited by:

    1. Shao, Y.L. & Soh, K.Y. & Wan, Y.D. & Kumja, M. & Khin, Z. & Islam, M.R. & Chua, K.J., 2020. "Simulation and experimental study of thermal storage systems for district cooling system under commercial operating conditions," Energy, Elsevier, vol. 203(C).
    2. Parameshwaran, R. & Kalaiselvam, S., 2013. "Energy efficient hybrid nanocomposite-based cool thermal storage air conditioning system for sustainable buildings," Energy, Elsevier, vol. 59(C), pages 194-214.
    3. Li, Gang, 2015. "Energy and exergy performance assessments for latent heat thermal energy storage systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 51(C), pages 926-954.
    4. Hamada, Yasuhiro & Nagata, Tsutomu & Kubota, Hideki & Ono, Takayuki & Musha, Ryosuke, 2014. "Development and characteristics of a method for self-contained ice production using cold outdoor air in winter," Energy, Elsevier, vol. 68(C), pages 939-946.
    5. Mustafa Erguvan & David W. MacPhee, 2018. "Energy and Exergy Analyses of Tube Banks in Waste Heat Recovery Applications," Energies, MDPI, vol. 11(8), pages 1-15, August.
    6. Campos-Celador, A. & Diarce, G. & González-Pino, I. & Sala, J.M., 2013. "Development and comparative analysis of the modeling of an innovative finned-plate latent heat thermal energy storage system," Energy, Elsevier, vol. 58(C), pages 438-447.
    7. David W. MacPhee & Mustafa Erguvan, 2020. "Thermodynamic Analysis of a High-Temperature Latent Heat Thermal Energy Storage System," Energies, MDPI, vol. 13(24), pages 1-19, December.
    8. Rezaei, M. & Anisur, M.R. & Mahfuz, M.H. & Kibria, M.A. & Saidur, R. & Metselaar, I.H.S.C., 2013. "Performance and cost analysis of phase change materials with different melting temperatures in heating systems," Energy, Elsevier, vol. 53(C), pages 173-178.
    9. Shabgard, Hamidreza & Bergman, Theodore L. & Faghri, Amir, 2013. "Exergy analysis of latent heat thermal energy storage for solar power generation accounting for constraints imposed by long-term operation and the solar day," Energy, Elsevier, vol. 60(C), pages 474-484.
    10. Pakrouh, R. & Hosseini, M.J. & Ranjbar, A.A. & Bahrampoury, R., 2017. "Thermodynamic analysis of a packed bed latent heat thermal storage system simulated by an effective packed bed model," Energy, Elsevier, vol. 140(P1), pages 861-878.
    11. Guelpa, Elisa & Sciacovelli, Adriano & Verda, Vittorio, 2013. "Entropy generation analysis for the design improvement of a latent heat storage system," Energy, Elsevier, vol. 53(C), pages 128-138.
    12. Shao, Y.L. & Soh, K.Y. & Islam, M.R. & Chua, K.J., 2023. "Thermal, exergy and economic analysis of a cascaded packed-bed tank with multiple phase change materials for district cooling system," Energy, Elsevier, vol. 268(C).
    13. Al-abidi, Abduljalil A. & Bin Mat, Sohif & Sopian, K. & Sulaiman, M.Y. & Mohammed, Abdulrahman Th., 2013. "CFD applications for latent heat thermal energy storage: a review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 20(C), pages 353-363.
    14. Bi, Yuehong & Liu, Xiao & Jiang, Minghe, 2014. "Exergy analysis of a gas-hydrate cool storage system," Energy, Elsevier, vol. 73(C), pages 908-915.

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