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首页> 外文期刊>Energy Conversion & Management >Thermodynamic, economic, and environmental analysis of new combined power and space cooling system for waste heat recovery in waste-to-energy plant
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Thermodynamic, economic, and environmental analysis of new combined power and space cooling system for waste heat recovery in waste-to-energy plant

机译：废热厂废热回收新综合电力和空间冷却系统的热力学，经济和环境分析

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摘要

Recently, the way that taking municipal solid waste (MSW) as fuel combustion for power generation is proposed to deal with increasing MSW, based on the method of waste-to-energy (WTE) technology. However, the energy efficiency of WTE plant is only 20% approximately, due to the energy loss of boiler and exhaust gas. A novel waste heat recovery (WHR) system has been developed to improve the thermodynamic and economic performance of WTE plant in this study. Rankine cycle (RC) is utilized to recover the waste heat (WH) of high temperature boiler slag to generate power. Organic Rankine cycle (ORC) and absorption refrigeration cycle (ARC) are used for cascade recovery of WH from boiler exhaust gas to provide electricity and space cooling, respectively. Aiming to promote the overall performance of the WTE plant, comprehensive thermodynamic, economic, and environmental analysis are performed. Different environmental-friendly organic working fluids of the ORC are studied and compared based on the air pollutant emissions standards. Subsequently, several crucial parameters of proposed system are studied. Eventually, a comparison of the thermodynamic, economic, and environmental performance between original and new WTE plant is carried out. The results indicate that the use of butane can obtain the highest electric energy for ORC, compared with other working fluids. As well, the energy and exergy efficiency of WTE plant increase by 37.66% and 35.65%, respectively, with the choice of the WHR system. Furthermore, the dynamic payback period of new WTE plant is 4.63 year, with a decrease of 4.79 year, and the net present value (NPV) increases from 5.21 M$ to 18.12 M$. From the perspective of environmental analysis, the sustainability of the new WTE plant increases slightly, but the ecological efficiency has an increment of 11.28%.
机译：最近，提出了作为发电的燃料燃烧的城市固体废物（MSW）的方式，以应对MSW的增加，基于废物到能量（WTE）技术。然而，由于锅炉和废气的能量损失，WTE工厂的能量效率约为20％。已经开发了一种新的废热回收（WHR）系统，以改善本研究中的WTE工厂的热力学和经济性能。朗肯循环（RC）用于恢复高温锅炉渣的废热（WH）以产生功率。有机朗肯循环（ORC）和吸收制冷循环（ARC）用于从锅炉废气的级联恢复WH，分别提供电力和空间冷却。旨在促进WTE工厂的整体性能，进行全面的热力学，经济和环境分析。研究和基于空气污染物排放标准进行了不同的环保型有机工作流体。随后，研究了所提出的系统的若干关键参数。最终，进行了原始和新型WTE工厂之间热力学，经济和环境性能的比较。结果表明，与其他工作流体相比，丁烷的使用可以获得用于兽人的最高电能。同样，WTE工厂的能量和高效效率分别增加了37.66％和35.65％，选择了WHR系统。此外，新的WTE工厂的动态投资回收期为4.63年，减少4.79年，净现值（NPV）从5.21厘米增加到18.12米。从环境分析的角度来看，新的WTE工厂的可持续性略有增加，但生态效率的增量11.28％。

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  • 来源
    《Energy Conversion & Management》 |2020年第12期|113511.1-113511.12|共12页
  • 作者

    Lu Fulu; Zhu Yan; Pan Mingzhang; Li Chao; Yin Jiwen; Huang Fuchuan;

  • 作者单位

    Guangxi Univ Sch Mech Engn Guangxi Key Lab Mfg Syst & Adv Mfg Technol Nanning 530004 Peoples R China;

    Guangxi Univ Sch Mech Engn Guangxi Key Lab Mfg Syst & Adv Mfg Technol Nanning 530004 Peoples R China;

    Guangxi Univ Sch Mech Engn Guangxi Key Lab Mfg Syst & Adv Mfg Technol Nanning 530004 Peoples R China|Guangxi Univ Guangxi Key Lab Petrochem Resource Proc & Proc In Nanning 530004 Peoples R China;

    Guangxi Univ Sch Mech Engn Guangxi Key Lab Mfg Syst & Adv Mfg Technol Nanning 530004 Peoples R China;

    Guangxi Univ Sch Mech Engn Guangxi Key Lab Mfg Syst & Adv Mfg Technol Nanning 530004 Peoples R China;

    Guangxi Univ Sch Mech Engn Guangxi Key Lab Mfg Syst & Adv Mfg Technol Nanning 530004 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

    Waste heat recovery; Waste-to-energy; Thermodynamic analysis; Economic analysis; Environmental analysis;

    机译：废热回收;浪费到能量;热力学分析;经济分析;环境分析;

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