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Screening of hydrocarbons as supercritical ORCs working fluids by thermal stability

机译：通过热稳定性筛选作为超临界ORC工作流体的碳氢化合物

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摘要

Organic Rankine Cycle (ORC) systems are widely used for industrial waste heat recovery and renewable energy utilization. The supercritical ORC is currently one of the main development directions due to its low exergy loss, high thermal efficiency and high work output. The thermal stability is the major limitation of organic working fluid selection with high temperature heat sources. This paper presents a rapid experimental method for assessing the thermal stability of hydrocarbons for ORCs. The fluids were tested in a high temperature reactor with methane and hydrogen theoretically and experimentally confirmed to be the indicators of thermal decomposition. The thermal decomposition temperatures were obtained for n-hexane, n-pentane, isopentane, cyclopentane, n-butane and isobutane using the rapid experimental method. The results show that cycloalkanes are not the good choices by thermal stability and long carbon chain hydrocarbons (longer than C6) are not suitable for supercritical ORCs due to the thermal stability limitation. (C) 2016 Elsevier Ltd. All rights reserved.
机译：有机朗肯循环（ORC）系统广泛用于工业废热回收和可再生能源利用。由于超临界ORC的低本能损耗，高热效率和高功输出，目前已成为主要的发展方向之一。热稳定性是使用高温热源选择有机工作流体的主要限制。本文提出了一种快速的实验方法，用于评估烃对ORC的热稳定性。理论上和实验上，在高温反应器中用甲烷和氢气对流体进行了测试，证实了这些流体是热分解的指标。使用快速实验方法获得了正己烷，正戊烷，异戊烷，环戊烷，正丁烷和异丁烷的热分解温度。结果表明，环烷烃不是热稳定性的理想选择，并且由于热稳定性的限制，长碳链烃（比C6长）不适合用于超临界ORC。 （C）2016 Elsevier Ltd.保留所有权利。

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  • 来源
    《Energy Conversion & Management》 |2016年第10期|632-637|共6页
  • 作者

    Dai Xiaoye; Shi Lin; An Qingsong; Qian Weizhong;

  • 作者单位

    Tsinghua Univ, Dept Thermal Engn, Minist Educ China, Key Lab Thermal Sci & Power Engn, Beijing, Peoples R China;

    Tsinghua Univ, Dept Thermal Engn, Minist Educ China, Key Lab Thermal Sci & Power Engn, Beijing, Peoples R China;

    Tianjin Univ, Sch Mech Engn, Key Lab Efficient Utilizat Low & Medium Grade Ene, MOE, Tianjin, Peoples R China;

    Tsinghua Univ, Dept Chem Engn, Beijing Key Lab Green Chem React Engn & Technol, Beijing, 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

    Organic Rankine Cycle (ORC); Hydrocarbon; Thermal stability; Thermal decomposition indicator;

    机译：有机朗肯循环（ORC）;烃;热稳定性;热分解指示剂;

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