...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Energy Conversion & Management >Understanding the 3D construction method of thermodynamic cycle: Insights from limiting performance of pure working fluid
【24h】

Understanding the 3D construction method of thermodynamic cycle: Insights from limiting performance of pure working fluid

机译：了解热力学周期的3D施工方法：纯工作流体限制性能的见解

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The 2D temperature-entropy diagram, which is commonly applied to construct and analyze conventional thermodynamic cycles, cannot clearly express novel thermodynamic cycles with multi-working fluids. The 3D construction method provides a methodological guidance to the construction and analysis of novel thermodynamic cycles. In order to understand the mechanism of the 3D construction method, in this study, the limiting performance of 3D thermodynamic cycle with pure working fluid is analyzed and compared with the limiting performance of organic Rankine cycle. Based on the diagram of the 3D coordinates in terms of temperature, entropy, and mass flow rate, the 3D limiting thermodynamic cycle is defined and decoupled into two limiting organic Rankine cycle first. Then, equations of limiting thermal efficiency and thermodynamic perfection are derived based on pure working fluid. Three parameters affecting limiting performance are revealed, namely the latent heat, the slope of the saturated liquid line in the temperature-entropy diagram, and the separation quality. Lastly, effects of key operating parameters on the limiting efficiency of the 3D cycle are analyzed. With the increase of high temperature or middle temperature, the limiting thermal efficiency increases, and thermodynamic perfection increases first and then declines. With the increase of separation quality, the limiting thermal efficiency shows a downward trend. However, the trend of thermodynamic perfection with separation quality depends on values of high temperature and middle temperature. Besides, the limiting performance between the 3D cycle and conventional organic Rankine cycle is compared. The limiting thermodynamic perfection of 3D cycle using R245fa is 7.3%-16.42% higher than that of conventional organic Rankine cycle.
机译：通常应用于构建和分析传统热力学循环的2D温度熵图不能明确表达具有多工作流体的新型热力学循环。 3D施工方法为新型热力学循环的构造和分析提供了一种方法论指导。为了理解3D施工方法的机制，在本研究中，分析了3D热力学循环与纯工作流体的限制性能，并与有机朗肯循环的限制性能进行了比较。基于在温度，熵和质量流量方面的3D坐标的图，定义了3D限制热力学循环并首先分成两个限制有机朗肯循环。然后，基于纯工作流体来推导出限制热效率和热力学完美的方程。揭示了影响限制性能的三个参数，即潜热，温度熵图中的饱和液体线的斜率和分离质量。最后，分析了关键操作参数对3D周期的限制效率的影响。随着高温或中温的增加，限制热效率增加，热力学完美首先增加，然后下降。随着分离质量的增加，限制性热效率显示了下降趋势。然而，具有分离质量的热力学完美的趋势取决于高温和中温的值。此外，比较了3D周期与传统有机朗肯循环之间的限制性。使用R245FA的3D循环的限制热力学完善比常规有机朗肯循环高7.3％-16.42％。

著录项

  • 来源
    《Energy Conversion & Management》 |2020年第11期|113364.1-113364.11|共11页
  • 作者

    Xu Weicong; Zhao Ruikai; Deng Shuai; Mao Samuel S.; Zhao Li;

  • 作者单位

    Tianjin Univ Key Lab Efficient Utilizat Low & Medium Grade Ene Minist Educ China Tianjin 300350 Peoples R China|Univ Calif Berkeley Dept Mech Engn Etcheverry Hall Berkeley CA 94720 USA;

    Tianjin Univ Key Lab Efficient Utilizat Low & Medium Grade Ene Minist Educ China Tianjin 300350 Peoples R China;

    Tianjin Univ Key Lab Efficient Utilizat Low & Medium Grade Ene Minist Educ China Tianjin 300350 Peoples R China;

    Univ Calif Berkeley Dept Mech Engn Etcheverry Hall Berkeley CA 94720 USA;

    Tianjin Univ Key Lab Efficient Utilizat Low & Medium Grade Ene Minist Educ China Tianjin 300350 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

    Limiting thermodynamic cycle; 3D thermodynamic cycle; Organic Rankine cycle; Limiting efficiency;

    机译：限制热力学循环;3D热力学循环;有机朗肯循环;限制效率;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号