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首页> 外文期刊>Energy Conversion & Management >Thermo-economic analysis of a combined cooling, heating and power system based on carbon dioxide power cycle and absorption chiller for waste heat recovery of gas turbine
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Thermo-economic analysis of a combined cooling, heating and power system based on carbon dioxide power cycle and absorption chiller for waste heat recovery of gas turbine

机译：基于二氧化碳动力循环和吸收冷却器的燃气涡轮机废热回收的组合冷却，加热和电力系统的热经济分析

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摘要

A novel combined cooling, heating and power system which consists of carbon dioxide power cycle, absorption chiller and heaters is proposed in this paper for waste heat recovery of gas turbine. In the proposed cogeneration system, the absorption chiller and heaters are driven by the residual energy of carbon dioxide power cycle and flue gas simultaneously. Detailed mathematic models are established to simulate and evaluate the system from the perspective of thermodynamics and economics. The results of parametric analysis indicate that there is an optimal value for the turbine inlet temperature, at which the exergy efficiency is maximized and the levelized cost of exergy is minimized. As the split ratio increases, the exergy efficiency and levelized cost of exergy of the proposed system first increase then decrease simultaneously. Single-objective optimization is carried out to maximize the exergy efficiency of the proposed system. The optimal results show that the exergy efficiency and levelized cost of exergy of the cogeneration system are 4.62% higher and 0.90 cent lower than that of standalone power cycle, respectively. Compared with the alternative cogeneration system in which only low-temperature flue gas or the waste heat of power cycle is used to drive the refrigeration subsystem and heating subsystem, the exergy efficiency of proposed system is enhanced by 2.89% and 1.3%, respectively. Finally, multi-objective optimization is carried out with exergy efficiency and levelized cost of exergy as objective functions. Pareto frontier is calculated and recommended point is given for the engineering practice.
机译：本文提出了一种新的组合冷却，加热和电力系统，包括二氧化碳动力循环，吸收式冷却器和加热器，用于燃气轮机的废热回收。在拟议的热电联产系统中，吸收式冷却器和加热器通过同时通过二氧化碳动力循环和烟道气的剩余能量驱动。建立详细的数学模型，以模拟和评估系统热力学和经济学的视角。参数分析的结果表明涡轮机入口温度有最佳值，在该温度下，最大的效率最大化，稳定的驱动成本最小化。随着分流比的增加，所提出的系统的漏洞效率和稳定性成本首先增加，然后同时下降。进行单目标优化以最大限度地提高所提出的系统的漏极效率。最佳结果表明，热电联产系统的电力效率和稳定性高度高4.62％，分别低于独立功率循环的0.90％。与仅使用低温烟气或功率循环废热的替代热电联产系统相比，用于驱动制冷子系统和加热子系统，所提出的系统的高效率分别增强2.89％和1.3％。最后，通过高度效率和稳定性的高度优化进行多目标优化作为客观功能。帕累托前沿计算，推荐点用于工程实践。

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  • 来源
    《Energy Conversion & Management》 |2020年第11期|113372.1-113372.11|共11页
  • 作者

    Li Bo; Wang Shun-sen; Wang Kai; Song Liming;

  • 作者单位

    Xi An Jiao Tong Univ Sch Energy & Power Engn Inst Turbomachinery State Key Lab Multiphase Flow Power Engn 28 Xianning West Rd Xian 710049 Peoples R China;

    Xi An Jiao Tong Univ Sch Energy & Power Engn Inst Turbomachinery State Key Lab Multiphase Flow Power Engn 28 Xianning West Rd Xian 710049 Peoples R China;

    Xi An Jiao Tong Univ Sch Energy & Power Engn Inst Turbomachinery State Key Lab Multiphase Flow Power Engn 28 Xianning West Rd Xian 710049 Peoples R China;

    Xi An Jiao Tong Univ Sch Energy & Power Engn Inst Turbomachinery State Key Lab Multiphase Flow Power Engn 28 Xianning West Rd Xian 710049 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

    CCHP; Waste heat recovery; Carbon dioxide power cycle; Absorption refrigeration cycle; Thermo-economic analysis; Optimization;

    机译：CCHP;废热回收;二氧化碳动力循环;吸收制冷循环;热经济分析;优化;

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