Simulation study on utilising cold energy fuel to liquefy captured CO2 on LNG-fuelled vessels

• Autorzy: Li Zijian , Zhao Xizhi , Cao Rui , Yang Hualin , Li Boyang , Diao Fujun , Zhang Rui

Identyfikatory

DOI

10.2478/pomr-2025-0041

• Języki publikacji: EN

Abstrakty

EN

This study addresses the issues of abundant cold energy in fuel and the high energy consumption of CO2 liquefaction capture by the shipboard carbon capture system in LNG-fuelled vessels. Two liquefied CO2 schemes are proposed: an LNG cold energy and refrigeration cycle integrated CO2 liquefaction system (Scheme 1) and an LNG cold energy and seawater diversion liquefied CO2 system (Scheme 2). The two systems are simulated in Aspen HYSYS software and, based on the simulation data, multiple thermodynamic parameters of the system, including exergy efficiency, cold energy utilisation rate, and energy consumption, are calculated under different vessel operating conditions, thereby verifying the feasibility of the system. On this basis, the systems are optimised, enhancing their overall performance. Through a comparative analysis of the two schemes, Scheme 1 was selected to conduct an economic analysis of typical vessel routes and calculations were conducted to determine the reduction in energy consumption and the decrease in carbon emissions achieved by utilising LNG cold energy for CO2 liquefaction and capture. The results prove that the system should have good practical applications.

Słowa kluczowe

EN

LNG-fuelled vessel; LNG cold energy; CO2 liquefaction; carbon emission reduction

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2025
• Tom: nr 3
• Strony: 131--146
• Opis fizyczny: Bibliogr. 26 poz., rys., tab.

Twórcy

autor

Li Zijian

• College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, Shandong, China

• https://orcid.org/0009-0003-8925-2430

autor

Zhao Xizhi

• College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, Shandong, China

• https://orcid.org/0009-0003-6640-0701

autor

Cao Rui

• CHINA Shipbuilding Industry Corporation Diesel Engine CO., LTD, Qingdao 266400, Shandong, China

• https://orcid.org/0009-0009-4602-2380

autor

Yang Hualin

• College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, Shandong, China

• https://orcid.org/0009-0007-0594-7999

autor

Li Boyang

• College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, Shandong, China

• https://orcid.org/0000-0003-0353-8490

autor

Diao Fujun

• College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, Shandong, China

• https://orcid.org/0009-0007-9867-2890

autor

Zhang Rui

• Marine Engineering College, Dalian Maritime University, Dalian, 116026, Liaoning, China

• https://orcid.org/0000-0002-2578-9744

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