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Research on the Application of Cold Energy of Largescale Lng-Powered Container Ships to Refrigerated Containers

Abstract

With the aim of considering the problem of excess fuel cold energy and excessive power consumption of refrigerated containers on large LNG-powered container ships, a new utilisation method using LNG-fuelled cold energy to cool refrigerated containers in cargo holds is proposed in this study, and the main structure of the cold storage in the method is modelled in three dimensions. Then, combined with the different conditions, 15 different combination schemes of high temperature cold storage and low temperature cold storage are designed to utilise the cold energy of LNG fuel, the exergy efficiency and cold energy utilisation rate calculation model of the system is established. The simulation tool ‘Aspen HYSYS’ is used to simulate and calculate the exergy efficiency and cold energy utilisation rate of the system under 15 combinations, verifying the feasibility of the scheme. According to the characteristics of such a ship’s cross-seasonal navigation routes and the number of refrigerated containers loaded in different ports, the combination schemes of the number of low-temperature cold storage and high-temperature cold storage are selected. Thus, the average exergy efficiency and cold energy utilisation rate of the whole line is obtained, which proves that LNG-powered container ships could effectively utilise the cold energy of LNG. By calculating the total electric energy consumed by refrigerated containers on the whole sailing route, before and after the adoption of the LNG cold energy method, it is found that the adoption of this new method can promote the realisation of energy saving and emission reduction of ships.

Keywords:

LNG-powered container ship, LNG cold energy utilization, Refrigerated container, Cold storage

Details

Issue
Vol. 28 No. 4(112) (2021)
Section
Latest Articles
Published
17-01-2022
DOI:
https://doi.org/10.2478/pomr-2021-0053
Licencja:
Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Open Access License

This journal provides immediate open access to its content under the Creative Commons BY 4.0 license. Authors who publish with this journal retain all copyrights and agree to the terms of the CC BY 4.0 license.

 

Authors

  • Yajing Li

    College of Electromechanical Engineering, Qingdao University of Science and Technology
  • Boyang Li

    College of Electromechanical Engineering, Qingdao University of Science and Technology
  • Fang Deng

    College of Electromechanical Engineering, Qingdao University of Science and Technology
  • Qianqian Yang

    College of Electromechanical Engineering, Qingdao University of Science and Technology
  • Baoshou Zhang

    School of Aerospace Engineering, Tsinghua University

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