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首页> 外文期刊>Energy Conversion & Management >Experimental investigation of an organic Rankine cycle with liquid-flooded expansion and R1233zd(E) as working fluid
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Experimental investigation of an organic Rankine cycle with liquid-flooded expansion and R1233zd(E) as working fluid

机译：用液体淹水膨胀和r1233zd（e）作为工作流体的有机朗朗循环的实验研究

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摘要

A new concept of liquid-flooded expansion has been proposed as a performance increasing modification of the basic ORC targeted at low-temperature heat sources. However, little research demonstrates the potential of this technology especially experimentally. In this paper, an experimental test facility based on a conventional recuperative ORC system was constructed with an independent liquid flooding loop that enables testing the influence of liquid flooding on a modified single-screw expander as well as on the cycle itself. Experiments were performed at various pressure ratios (3.3?4.1) over the expander and flooding ratios (0?0.3) with R1233zd(E) as the working fluid and a standard lubricant oil as the flooding medium. The data reduction and uncertainty analysis were also discussed in depth. In total, 142 steady-state points were obtained. Compared with the baseline organic Rankine cycle, the maximum improvement of the liquid-flooded expansion on the expander power output can be 9.1%, although at slightly worse expander inlet conditions. The maximum enhancement of the isothermal efficiency of the expander was 9.5%. Results also showed that the expander power output, the net power output and the thermal efficiency were enhanced with the increase of the flooding liquid amount. The potential of an organic Rankine cycle system with liquid-flooded expansion can be further examined if overexpansion losses can be reduced and larger amount of oil can be injected, i.e., with higher pressure ratios and higher flooding ratios. Overall, this study provides insights into performance improvement by means of modifying the cycle thermodynamics itself.
机译：已经提出了一种新的液体泛滥膨胀概念，作为在低温热源上靶向的基本兽人的性能增加的性能。然而，小型研究表明尤其是通过实验表明这项技术的潜力。在本文中，基于传统的恢复兽人系统的实验测试设施采用独立的液体泛洪环构造，使得能够测试液体泛滥对改进的单螺纹扩展器以及循环本身的影响。在膨胀机上的各种压力比（3.3〜4.1）以膨胀器和泛滥比率（0≤0.3），作为工作流体和作为泛洪介质的标准润滑油的溢出比（0≤0.3）进行实验。还讨论了数据降低和不确定性分析。总共获得142个稳态点。与基线有机朗肯循环相比，扩展器电源输出上液体溢流的膨胀的最大提高可以是9.1％，但在略差较差的扩展器入口条件下。膨胀机等温效率的最大增强为9.5％。结果还表明，随着洪水液体量的增加，扩展器电源输出，净功率输出和热效率得到了增强。如果可以降低过度缺失损失，可以进一步检查具有液体泛抗膨胀的有机兰峰循环系统的潜力，如果可以减少过量缺失损失，并且可以注射较大量的油，即，具有更高的压力比和更高的洪水比率。总体而言，本研究通过修改循环热力学本身来提供对性能改进的见解。

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  • 来源
    《Energy Conversion & Management》 |2021年第4期|113894.1-113894.20|共20页
  • 作者

    Li Xiaoya; Lecompte Steven; Van Nieuwenhuyse Jera; Couvreur Kenny; Tian Hua; Shu Gequn; De Paepe Michel; Markides Christos N.;

  • 作者单位

    Univ Sci & Technol China Dept Thermal Sci & Energy Engn Hefei 230027 Peoples R China|Univ Ghent Dept Electromech Syst & Met Engn Sint Pietersnieuwstr 41 B-9000 Ghent Belgium|Tianjin Univ State Key Lab Engines 92 Weijin Rd Tianjin 300072 Peoples R China|Imperial Coll London Dept Chem Engn Clean Energy Proc CEP Lab London England;

    Univ Ghent Dept Electromech Syst & Met Engn Sint Pietersnieuwstr 41 B-9000 Ghent Belgium|FlandersMake UGent Core Lab EEDT MP Ghent Belgium;

    Univ Ghent Dept Electromech Syst & Met Engn Sint Pietersnieuwstr 41 B-9000 Ghent Belgium;

    Univ Ghent Dept Electromech Syst & Met Engn Sint Pietersnieuwstr 41 B-9000 Ghent Belgium;

    Tianjin Univ State Key Lab Engines 92 Weijin Rd Tianjin 300072 Peoples R China;

    Univ Sci & Technol China Dept Thermal Sci & Energy Engn Hefei 230027 Peoples R China;

    Univ Ghent Dept Electromech Syst & Met Engn Sint Pietersnieuwstr 41 B-9000 Ghent Belgium|FlandersMake UGent Core Lab EEDT MP Ghent Belgium;

    Imperial Coll London Dept Chem Engn Clean Energy Proc CEP Lab London England;

  • 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

    Liquid flooding; Isothermal expansion; Screw expander; Organic Rankine cycle (ORC); Waste heat recovery; Uncertainty analysis;

    机译：液体洪水;等温膨胀;螺杆膨胀机;有机朗肯循环（ORC）;废热回收;不确定性分析;

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