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Waste cold energy recovery from liquefied natural gas (LNG) regasification including pressure and thermal energy

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  • Le, Si
  • Lee, Jui-Yuan
  • Chen, Cheng-Liang

Abstract

The world has been concentrating on waste heat recovery for several decades. The attention has recently been turned to waste energy in cold streams. This work focuses on the recovery of waste cold energy released from the Liquefied Natural Gas (LNG) regasification process, including pressure energy and thermal energy. A direct expansion configuration involving different steps of expansion and mass flow rate extraction at intermediate pressure levels is adopted in the mathematical models for pressure energy recovery. A direct-configuration organic Rankine cycle (ORC) is employed subsequently to recover residual cold energy. An equation of state for methane (the main component of LNG) is used to estimate the thermodynamic properties of LNG in a long-range phase transition of the regasification process. The modified Peng-Robinson (PR) and the Soave-Redlich-Kwong (SRK) equations of state are used to calculate thermodynamic properties of the ORC working fluids. All the models are developed and solved using MATLAB. By adopting propane as the ORC working fluid, the multistage expansion and thermal energy extraction can recover 215 kJ per kilogram of flowing LNG, which can generate 1.7 GWh annually for 1 kg/s LNG, with a payback period less than seven years.

Suggested Citation

  • Le, Si & Lee, Jui-Yuan & Chen, Cheng-Liang, 2018. "Waste cold energy recovery from liquefied natural gas (LNG) regasification including pressure and thermal energy," Energy, Elsevier, vol. 152(C), pages 770-787.
    • Handle: RePEc:eee:energy:v:152:y:2018:i:c:p:770-787
    DOI: 10.1016/j.energy.2018.03.076
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    References listed on IDEAS

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    Cited by:

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    9. Badami, Marco & Bruno, Juan Carlos & Coronas, Alberto & Fambri, Gabriele, 2018. "Analysis of different combined cycles and working fluids for LNG exergy recovery during regasification," Energy, Elsevier, vol. 159(C), pages 373-384.
    10. Atienza-Márquez, Antonio & Bruno, Joan Carles & Akisawa, Atsushi & Nakayama, Masayuki & Coronas, Alberto, 2019. "Fluids selection and performance analysis of a polygeneration plant with exergy recovery from LNG-regasification," Energy, Elsevier, vol. 176(C), pages 1020-1036.
    11. Zhang, Tongtong & She, Xiaohui & You, Zhanping & Zhao, Yanqi & Fan, Hongjun & Ding, Yulong, 2022. "Cryogenic thermoelectric generation using cold energy from a decoupled liquid air energy storage system for decentralised energy networks," Applied Energy, Elsevier, vol. 305(C).
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    13. Tan, Liping & Cai, Lei & Fu, Yidan & Zhou, Zining & Guan, Yanwen, 2023. "Numerical investigation of biomass and liquefied natural gas driven oxy-fuel combustion power system," Renewable Energy, Elsevier, vol. 208(C), pages 94-104.
    14. Ning, Jinghong & Sun, Zhili & Dong, Qiang & Liu, Xinghua, 2019. "Performance study of supplying cooling load and output power combined cycle using the cold energy of the small scale LNG," Energy, Elsevier, vol. 172(C), pages 36-44.
    15. Yu, Haoshui & Kim, Donghoi & Gundersen, Truls, 2019. "A study of working fluids for Organic Rankine Cycles (ORCs) operating across and below ambient temperature to utilize Liquefied Natural Gas (LNG) cold energy," Energy, Elsevier, vol. 167(C), pages 730-739.
    16. Atienza-Márquez, Antonio & Bruno, Joan Carles & Akisawa, Atsushi & Coronas, Alberto, 2019. "Performance analysis of a combined cold and power (CCP) system with exergy recovery from LNG-regasification," Energy, Elsevier, vol. 183(C), pages 448-461.
    17. Ong, Chong Wei & Chen, Cheng-Liang, 2019. "Technical and economic evaluation of seawater freezing desalination using liquefied natural gas," Energy, Elsevier, vol. 181(C), pages 429-439.
    18. Lee, Inkyu & You, Fengqi, 2019. "Systems design and analysis of liquid air energy storage from liquefied natural gas cold energy," Applied Energy, Elsevier, vol. 242(C), pages 168-180.
    19. Huerta, Felipe & Vesovic, Velisa, 2019. "A realistic vapour phase heat transfer model for the weathering of LNG stored in large tanks," Energy, Elsevier, vol. 174(C), pages 280-291.
    20. Tafone, Alessio & Raj Thangavelu, Sundar & Morita, Shigenori & Romagnoli, Alessandro, 2023. "Design optimization of a novel cryo-polygeneration demonstrator developed in Singapore – Techno-economic feasibility study for a cooling dominated tropical climate," Applied Energy, Elsevier, vol. 330(PB).

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