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Nonlinear heat transfer processes in a two-phase thermofluidic oscillator

Author

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  • Markides, Christos N.
  • Osuolale, Adebayo
  • Solanki, Roochi
  • Stan, Guy-Bart V.

Abstract

A two-phase thermofluidic oscillator was recently reported as being capable of undergoing sustained operation when a constant and low temperature difference is applied to the device, which consists of a network of tubes, compartments and two heat exchanger blocks. Within this arrangement a working fluid undergoes thermodynamic property oscillations that describe a heat engine cycle. Previous attempts to model the dynamic behaviour of this thermofluidic engine for performance predictions have been based on linear analyses. These have provided us with useful knowledge of the necessary minimum temperature difference for operation, and the resulting oscillation frequency and efficiency. However, experimental observations suggest a limit cycle operation associated exclusively with nonlinear systems. The present paper presents an effort to devise a nonlinear model for the device. Indicative results from this model are discussed, and the predictions are compared to those from the linear equivalents and experimental observations. The results reveal that although both linear and nonlinear models predict similar oscillation frequencies, the nonlinear model predicts lower exergetic efficiencies. This probably arises from the inability of the linear representation in the thermal domain to capture the saturation in the rate of heat exchange between the working fluid and the heat exchangers. The present effort aims to provide a better understanding of this device and to suggest improved design guidelines for increased efficiency and power density.

Suggested Citation

  • Markides, Christos N. & Osuolale, Adebayo & Solanki, Roochi & Stan, Guy-Bart V., 2013. "Nonlinear heat transfer processes in a two-phase thermofluidic oscillator," Applied Energy, Elsevier, vol. 104(C), pages 958-977.
    • Handle: RePEc:eee:appene:v:104:y:2013:i:c:p:958-977
    DOI: 10.1016/j.apenergy.2012.11.056
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    References listed on IDEAS

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    1. Markides, Christos N. & Smith, Thomas C.B., 2011. "A dynamic model for the efficiency optimization of an oscillatory low grade heat engine," Energy, Elsevier, vol. 36(12), pages 6967-6980.
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    Citations

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    Cited by:

    1. Taleb, Aly I. & Timmer, Michael A.G. & El-Shazly, Mohamed Y. & Samoilov, Aleksandr & Kirillov, Valeriy A. & Markides, Christos N., 2016. "A single-reciprocating-piston two-phase thermofluidic prime-mover," Energy, Elsevier, vol. 104(C), pages 250-265.
    2. Markides, Christos N. & Gupta, Ajay, 2013. "Experimental investigation of a thermally powered central heating circulator: Pumping characteristics," Applied Energy, Elsevier, vol. 110(C), pages 132-146.
    3. Christoph J.W. Kirmse & Oyeniyi A. Oyewunmi & Andrew J. Haslam & Christos N. Markides, 2016. "Comparison of a Novel Organic-Fluid Thermofluidic Heat Converter and an Organic Rankine Cycle Heat Engine," Energies, MDPI, vol. 9(7), pages 1-26, June.
    4. Zhang, Zhiguo & Zhao, Dan & Li, S.H. & Ji, C.Z. & Li, X.Y. & Li, J.W., 2015. "Transient energy growth of acoustic disturbances in triggering self-sustained thermoacoustic oscillations," Energy, Elsevier, vol. 82(C), pages 370-381.
    5. White, M.T. & Oyewunmi, O.A. & Chatzopoulou, M.A. & Pantaleo, A.M. & Haslam, A.J. & Markides, C.N., 2018. "Computer-aided working-fluid design, thermodynamic optimisation and thermoeconomic assessment of ORC systems for waste-heat recovery," Energy, Elsevier, vol. 161(C), pages 1181-1198.
    6. Chouder, Ryma & Benabdesselam, Azzedine & Stouffs, Pascal, 2023. "Modeling results of a new high performance free liquid piston engine," Energy, Elsevier, vol. 263(PD).
    7. Tang, K. & Feng, Y. & Jin, S.H. & Jin, T. & Li, M., 2015. "Performance comparison of jet pumps with rectangular and circular tapered channels for a loop-structured traveling-wave thermoacoustic engine," Applied Energy, Elsevier, vol. 148(C), pages 305-313.
    8. Tan, Jingqi & Wei, Jianjian & Jin, Tao, 2020. "Electrical-analogy network model of a modified two-phase thermofluidic oscillator with regenerator for low-grade heat recovery," Applied Energy, Elsevier, vol. 262(C).
    9. Richardson, E.S., 2016. "Thermodynamic performance of new thermofluidic feed pumps for Organic Rankine Cycle applications," Applied Energy, Elsevier, vol. 161(C), pages 75-84.
    10. Kirmse, Christoph J.W. & Oyewunmi, Oyeniyi A. & Taleb, Aly I. & Haslam, Andrew J. & Markides, Christos N., 2017. "A two-phase single-reciprocating-piston heat conversion engine: Non-linear dynamic modelling," Applied Energy, Elsevier, vol. 186(P3), pages 359-375.
    11. Wang, Kai & Sanders, Seth R. & Dubey, Swapnil & Choo, Fook Hoong & Duan, Fei, 2016. "Stirling cycle engines for recovering low and moderate temperature heat: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 62(C), pages 89-108.
    12. Ngangué, Max Ndamé & Stouffs, Pascal, 2020. "Dynamic simulation of an original Joule cycle liquid pistons hot air Ericsson engine," Energy, Elsevier, vol. 190(C).
    13. Oyewunmi, Oyeniyi A. & Kirmse, Christoph J.W. & Haslam, Andrew J. & Müller, Erich A. & Markides, Christos N., 2017. "Working-fluid selection and performance investigation of a two-phase single-reciprocating-piston heat-conversion engine," Applied Energy, Elsevier, vol. 186(P3), pages 376-395.
    14. van Kleef, Luuk M.T. & Oyewunmi, Oyeniyi A. & Markides, Christos N., 2019. "Multi-objective thermo-economic optimization of organic Rankine cycle (ORC) power systems in waste-heat recovery applications using computer-aided molecular design techniques," Applied Energy, Elsevier, vol. 251(C), pages 1-1.
    15. Markides, Christos N. & Solanki, Roochi & Galindo, Amparo, 2014. "Working fluid selection for a two-phase thermofluidic oscillator: Effect of thermodynamic properties," Applied Energy, Elsevier, vol. 124(C), pages 167-185.

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