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Emergy evaluation of power generation systems

机译:发电系统的可测量评估

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摘要

With the increasing demand of power sources, it is of great significance to evaluate different power generation systems and optimize the energy structure. The emergy is proved to be a comprehensive and powerful way to evaluate the sustainability of a system. In this paper, emergy is used to compare ten power generation systems by two calculation methods of emergy indices. The emergy data of integrated gasification combined cycle and wind power generation systems are gathered from the studies of life cycle assessment, while those of the other eight systems are taken from existing emergy evaluations and converted to the same baseline. The study of hydropower generation systems shows the influence of technical progress and geographical location to the sustainability. The comparison of ten power generation systems shows that the hydropower generation system has the best sustainability while the wind and solar systems demonstrate relatively low sustainability. Besides, the sustainability is relative to the carbon dioxide tax. The sustainability of wind and concentrated solar power generation systems is tend to be better than that of integrated gasification combined cycle power generation system with an increase in the carbon dioxide tax. The results indicate that the technology, investment cost and carbon dioxide emission are essential factors to sustainability of power generation systems.
机译:随着电源需求的越来越大,评估不同的发电系统并优化能量结构具有重要意义。被证明是评估系统可持续性的全面而有力的方法。在本文中,emergy用于比较10个可识别指数的计算方法。集成气化联合循环和风力发电系统的可素质数据从生命周期评估的研究中收集,而其他八种系统的研究是从现有的最佳评估中取出并转换为相同的基线。水电站系统的研究显示了技术进步和地理位置对可持续性的影响。十个发电系统的比较表明,水电站系统具有最佳可持续性,而风和太阳能系统展示了相对较低的可持续性。此外,可持续性是相对于二氧化碳税。随着二氧化碳税的增加,风和集中太阳能发电系统的可持续性往往比集成气化联合循环发电系统更好。结果表明,该技术,投资成本和二氧化碳排放是发电系统可持续性的必要因素。

著录项

  • 来源
    《Energy Conversion & Management》 |2020年第5期|112749.1-112749.11|共11页
  • 作者

    Ren Siyue; Feng Xiao; Yang Minbo;

  • 作者单位

    Xi An Jiao Tong Univ Sch Chem Engn & Technol Xian 710049 Shaanxi Peoples R China;

    Xi An Jiao Tong Univ Sch Chem Engn & Technol Xian 710049 Shaanxi Peoples R China;

    Xi An Jiao Tong Univ Sch Chem Engn & Technol Xian 710049 Shaanxi Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Emergy indices; Power generation systems; Sustainability; Efficiency;

    机译:智能指数;发电系统;可持续性;效率;

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