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A two-dimensional numerical investigation of the optimal removal time and entropy production rate for a sensible thermal storage system

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  • Maveety, J.G.
  • Razani, A.

Abstract

We extend a previous one-dimensional analytical study to consider two-dimensional transient effects of a cylindrical, sensible energy-storage system. The working fluid NaK is assumed to be incompressible. Energy transfer from the high temperature surrounding domain is due to conduction in the annulus and convection to the working fluid. We apply a two-dimensional, explicit numerical scheme to quantify transient temperature profiles within the two domains. In addition we consider second law aspects of the two subsystems and isolate irreversibilities which reduce the availability. Finally, we exploit the normalized figure of merit which characterizes the optimal ratio of exergy extraction to the total exergy change of the thermal storage system as a function of removal time.

Suggested Citation

  • Maveety, J.G. & Razani, A., 1996. "A two-dimensional numerical investigation of the optimal removal time and entropy production rate for a sensible thermal storage system," Energy, Elsevier, vol. 21(12), pages 1265-1276.
    • Handle: RePEc:eee:energy:v:21:y:1996:i:12:p:1265-1276
    DOI: 10.1016/0360-5442(96)00053-9
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    Cited by:

    1. Roy, Monisha & Roy, S. & Basak, Tanmay, 2015. "Role of various moving walls on energy transfer rates via heat flow visualization during mixed convection in square cavities," Energy, Elsevier, vol. 82(C), pages 1-22.
    2. Kaluri, Ram Satish & Basak, Tanmay, 2011. "Entropy generation due to natural convection in discretely heated porous square cavities," Energy, Elsevier, vol. 36(8), pages 5065-5080.
    3. Klemen Sredenšek & Sebastijan Seme & Bojan Štumberger & Miralem Hadžiselimović & Amor Chowdhury & Zdravko Praunseis, 2021. "Experimental Validation of a Dynamic Photovoltaic/Thermal Collector Model in Combination with a Thermal Energy Storage Tank," Energies, MDPI, vol. 14(23), pages 1-21, December.

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