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Thermo-economic analysis and optimization of a combined cooling and power (CCP) system for engine waste heat recovery

机译：用于发动机余热回收的冷却和动力联合（CCP）系统的热经济分析和优化

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摘要

A combined cooling and power (CCP) system is developed, which comprises a CO2 Brayton cycle (BC), an organic Rankine cycle (ORC) and an ejector refrigeration cycle for the cascade utilization of waste heat from an internal combustion engine. By establishing mathematical model to simulate the overall system, thermodynamic analysis and exergoeconomic analysis are conducted to examine the effects of five key parameters including the compressor pressure ratio, the compressor inlet temperature, the BC turbine inlet temperature, the ORC turbine inlet pressure and the ejector primary flow pressure on system performance. What's more, a single-objective optimization by means of genetic algorithm (GA) is carried out to search the optimal system performance from viewpoint of exergoeconomic. Results show that the increases of the BC turbine inlet temperature, the ORC turbine inlet pressure and the ejector primary flow pressure are benefit to both thermodynamic and exergoeconimic performances of the CCP system. However, the rises in compressor pressure ratio and compressor inlet temperature will lead to worse system performances. By the single-objective optimization, the lowest average cost per unit of exergy product for the overall system is obtained. (C) 2016 Elsevier Ltd. All rights reserved.
机译：开发了一种冷却和动力联合（CCP）系统，该系统包括二氧化碳布雷顿循环（BC），有机朗肯循环（ORC）和喷射器制冷循环，用于级联利用内燃机的余热。通过建立模拟整个系统的数学模型，进行热力学分析和能效分析，以检查五个关键参数的影响，包括压缩机压力比，压缩机入口温度，BC涡轮入口温度，ORC涡轮入口压力和喷射器初级流量压力对系统性能的影响。此外，还从遗传经济学的角度出发，通过遗传算法（GA）进行了单目标优化，以寻求最优的系统性能。结果表明，BC涡轮进口温度，ORC涡轮进口压力和喷射器一次流动压力的增加有利于CCP系统的热力学性能和能效性能。然而，压缩机压力比和压缩机入口温度的升高将导致较差的系统性能。通过单目标优化，可获得整个系统每单位火用产品的最低平均成本。 （C）2016 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Energy Conversion & Management》 |2016年第11期|303-316|共14页
  • 作者

    Xia Jiaxi; Wang Jiangfeng; Lou Juwei; Zhao Pan; Dai Yiping;

  • 作者单位

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

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

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

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

    Xi An Jiao Tong Univ, Sch Energy & Power Engn, State Key Lab Multiphase Flow Power Engn, Inst Turbomachinery, 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

    Internal combustion engine; Waste heat recovery; Brayton cycle; Organic Rankine cycle; Ejector refrigeration cycle; Optimization;

    机译：内燃机;余热回收;布雷顿循环;有机朗肯循环;喷射器制冷循环;优化;

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