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Thermal stability of linear siloxanes and their mixtures

Author

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  • Gallarini, Simone
  • Spinelli, Andrea
  • Lietti, Luca
  • Guardone, Alberto

Abstract

The working fluid thermal stability is one of the crucial features of an effective organic Rankine cycle. Hexamethyldisiloxane (MM - C6H18OSi2) and octamethyltrisiloxane (MDM - C8H24O2Si3) are siloxane fluids currently exploited in high temperature organic Rankine cycles. However, data about their thermal stability are scarce or absent in literature. This manuscript presents a study of their behavior and decomposition at operating temperatures in the range 270–420°C.

Suggested Citation

  • Gallarini, Simone & Spinelli, Andrea & Lietti, Luca & Guardone, Alberto, 2023. "Thermal stability of linear siloxanes and their mixtures," Energy, Elsevier, vol. 278(C).
    • Handle: RePEc:eee:energy:v:278:y:2023:i:c:s0360544223010812
    DOI: 10.1016/j.energy.2023.127687
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    References listed on IDEAS

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    1. Theresa Weith & Florian Heberle & Markus Preißinger & Dieter Brüggemann, 2014. "Performance of Siloxane Mixtures in a High-Temperature Organic Rankine Cycle Considering the Heat Transfer Characteristics during Evaporation," Energies, MDPI, vol. 7(9), pages 1-18, August.
    2. Keulen, L. & Gallarini, S. & Landolina, C. & Spinelli, A. & Iora, P. & Invernizzi, C. & Lietti, L. & Guardone, A., 2018. "Thermal stability of hexamethyldisiloxane and octamethyltrisiloxane," Energy, Elsevier, vol. 165(PB), pages 868-876.
    3. Tobias G. Erhart & Jürgen Gölz & Ursula Eicker & Martijn Van den Broek, 2016. "Working Fluid Stability in Large-Scale Organic Rankine Cycle-Units Using Siloxanes—Long-Term Experiences and Fluid Recycling," Energies, MDPI, vol. 9(6), pages 1-16, May.
    4. Angelino, Gianfranco & Colonna di Paliano, Piero, 1998. "Multicomponent Working Fluids For Organic Rankine Cycles (ORCs)," Energy, Elsevier, vol. 23(6), pages 449-463.
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    Cited by:

    1. Yu, Wei & Liu, Chao & Ban, Xijie & Li, Zhirong & Yan, Tianlong & Xin, Liyong & Wang, Shukun, 2024. "A novel method for predicting the thermal stabilization temperature of organic Rankine cycle system working fluids based on transition state theory," Energy, Elsevier, vol. 292(C).

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