A novel design of power-cooling cogeneration system driven by solid oxide fuel cell waste heat in ocean-going vessels. (10th October 2021)

• Record Type: Journal Article
• Authors: Zhao, Zhongkai; Wang, Zhiping; Xie, Shutao; Zhang, Mingliang; Ouyang, Tiancheng
• Is Part Of: Journal of cleaner production. Volume 318(2021)
• Publication Date: 2021-10-10
• Subjects: Homogeneous charge compression ignition engine -- Waste heat recovery -- Double effect absorption refrigeration cycle -- Multi-perspective evaluation; Factory and trade waste -- Management -- Periodicals; Manufactures -- Environmental aspects -- Periodicals; Déchets industriels -- Gestion -- Périodiques; Usines -- Aspect de l'environnement -- Périodiques; 628.5
• DOI: 10.1016/j.jclepro.2021.128532
• Languages: English
• ISSNs: 0959-6526

Abstract

Abstract : Among many global energy and environmental problems, the ocean and air pollution caused by ocean-going vessels cannot be ignored. Cleaner and more efficient power generation systems should be used to replace traditional diesel generators on ships. To this problem, the combination of fuel cell and waste heat recovery technology can become a better choice. In this paper, a novel power-cooling cogeneration system is designed and analyzed, which is mainly composed of solid oxide fuel cell, preheating subsystem, homogeneous charge compression ignition engine and double-effect absorption refrigeration cycle. The study mainly includes mathematical modeling, reliability verification of each subsystem, numerical simulation and results analysis in energy, exergy and economics. The results show that the system thermal efficiency and exergy efficiency can reach 64.01% and 61.83%, respectively, which are 18.76% and 12.62% higher than those of simple cell. Compared with traditional combined system, the payback time of the proposed scheme is about 2.59 years, which not only proves that the cost can be recovered in a short time, but also shortened by about half. By improving energy efficiency and reducing costs, the proposed scheme can ensure the demand of electricity and cold energy in daily life of the crew, and provides a new choice for the marine auxiliary power generation equipment. Graphical abstract: Image 1 Highlights: Improving efficiency and reducing emissions in marine electricity generation. A new system integrating solid oxide fuel cell and waste heat recovery is proposed. Multi-perspective evaluation is carried out. Thermal efficiency and exergy efficiency are improved by 18.76% and 12.62%. The research provides a new idea for marine auxiliary power generation system.