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首页> 外文期刊>Heat Transfer Engineering >Optimizing the Non-Inertive-Feedback Thermofluidic Engine for the Conversion of Low-Grade Heat to Pumping Work
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Optimizing the Non-Inertive-Feedback Thermofluidic Engine for the Conversion of Low-Grade Heat to Pumping Work

机译：优化非惯性反馈热流体发动机，以将低品位热量转换为泵送功

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摘要

This paper deals with the dynamic modeling and multiparametric optimization of a thermally powered, reciprocating/oscillator fluid pumping technology known as the Non-Inertive-Feedback Thermofluidic Engine (NIFTE), with the aim of proposing pathways for the improvement of the capabilities of this technology. Analogies are drawn between the physical device and an electric circuit. All system parameters are perturbed simultaneously and independently, and configurations exhibiting the highest efficiencies, highest pumped volumetric flow rates, and lowest feedback gains (corresponding to lowest temperatures or heat inputs necessary for continuous operation) are examined. A sensitivity analysis is also undertaken. Low feedback tube resistances and inductances, low thermal resistances, and also low adiabatic volume capacitances all allow for high efficiencies and flow rates, as do somewhat elevated (relative to a preselected "nominal" design) load resistances and inductances, and displacer cylinder capacitances and inductances. The power cylinder inductance has its optimum near its selected nominal value. Generally, the power and displacer cylinder capacitances do not significantly affect the investigated performance indicators. The heat exchangers, vapor volume, and power cylinder are identified as important components that control the performance of the device. The optimal parameter values can be taken as useful indications toward the design of an improved NIFTE pumping device.
机译：本文研究了称为非惯性反馈热流体发动机（NIFTE）的热力往复运动/振荡流体泵技术的动态建模和多参数优化，目的是为改进该技术的功能提出途径。在物理设备和电路之间进行类比。所有系统参数同时且独立地受到扰动，并且检查表现出最高效率，最高泵送体积流量和最低反馈增益（对应于连续运行所需的最低温度或热量输入）的配置。还进行了敏感性分析。低反馈管电阻和电感，低热阻以及低绝热体积电容都可以实现高效率和高流量，就像有些提高（相对于预先选定的“标称”设计）的负载电阻和电感，以及浮子缸电容和电感。动力缸电感在其选定的标称值附近具有最佳值。通常，动力缸和置换缸的电容不会显着影响所研究的性能指标。热交换器，蒸汽量和动力缸被认为是控制设备性能的重要组件。最佳参数值可作为改进NIFTE泵装置设计的有用指示。

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  • 来源
    《Heat Transfer Engineering》 |2015年第15期|1303-1320|共18页
  • 作者

    KARTHIKEYAN PALANISAMY; ALY I. TALEB; CHRISTOS N. MARKIDES;

  • 作者单位

    Clean Energy Processes (CEP) Laboratory, Department of Chemical Engineering, Imperial College London, London, United Kingdom;

    Clean Energy Processes (CEP) Laboratory, Department of Chemical Engineering, Imperial College London, London, United Kingdom;

    Clean Energy Processes (CEP) Laboratory, Department of Chemical Engineering, Imperial College London, London, United Kingdom,Department of Chemical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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