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首页> 外文期刊>Journal of Energy Storage >Waste heat utilization in reversible solid oxide fuel cell systems for electrical energy storage: Fuel recirculation design and feasibility analysis
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Waste heat utilization in reversible solid oxide fuel cell systems for electrical energy storage: Fuel recirculation design and feasibility analysis

机译：用于电能存储的可逆固体氧化物燃料电池系统中的废热利用：燃料再循环设计和可行性分析

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摘要

This study investigates a reversible solid oxide fuel cell system coupled with an external waste heat source for use of electrical energy storage. Steam from waste-fueled boilers is used as an external heat source over temperatures ranging from 150 degrees C to slightly over 550 degrees C. We considered three fuel recirculation configurations that represent the different temperatures of recirculated fuel. We also investigated the effect of different devices, including a recycle blower and ejector. Our results showed that fuel recirculation increases the overall round-trip efficiency up to 6.0% points when waste steam is at 500 degrees C. However, recirculation at the highest temperature did not lead to the highest efficiency improvement in the ejector systems. Instead, the warm-ejector configuration, our intermediate temperature case, resulted in the highest efficiency. Furthermore, the warm-ejector configuration showed efficiencies close to those of the blower system at a wide range of operating current densities. We also determined a range of external heat source temperatures that is favorable or workable for specific ejector system configurations so that the fuel recirculation configuration could be designed accordingly to achieve best performance.
机译：该研究研究了可逆固体氧化物燃料电池系统，其与外部废热源相结合，以使用电能存储。废料燃料锅炉的蒸汽在150摄氏度范围内的温度范围内用作外部热源，以略高于550℃。我们认为三种燃料再循环配置，代表了再循环燃料的不同温度。我们还调查了不同设备的效果，包括循环鼓风机和喷射器。我们的研究结果表明，当废气蒸汽为500摄氏度时，燃料再循环增加了6.0％的总往返效率。然而，最高温度的再循环不会导致喷射器系统的最高效率。相反，温暖的喷射器配置，我们的中间温度案例，导致了最高效率。此外，温暖的喷射器配置显示在各种操作电流密度下的鼓风机系统的效率。我们还确定了一系列外部热源温度，可用于特定喷射器系统配置，以便可以相应地设计燃料再循环配置以实现最佳性能。

著录项

  • 来源
    《Journal of Energy Storage》 |2020年第6期|101434.1-101434.10|共10页
  • 作者

    Giap Van-Tien; Kim Young Sang; Lee Young Duk; Ahn Kook Young;

  • 作者单位

    Korea Inst Machinery & Mat KIMM Environm Syst Res Div Dept Clean Fuel & Power Generat 156 Gajeongbuk Ro Daejeon 34103 South Korea|Univ Sci & Technol UST Environm & Energy Mech Engn KIMM Campus 217 Gajeong Ro Daejeon 34103 South Korea;

    Korea Inst Machinery & Mat KIMM Environm Syst Res Div Dept Clean Fuel & Power Generat 156 Gajeongbuk Ro Daejeon 34103 South Korea;

    Korea Inst Machinery & Mat KIMM Environm Syst Res Div Dept Clean Fuel & Power Generat 156 Gajeongbuk Ro Daejeon 34103 South Korea|Univ Sci & Technol UST Environm & Energy Mech Engn KIMM Campus 217 Gajeong Ro Daejeon 34103 South Korea;

    Korea Inst Machinery & Mat KIMM Environm Syst Res Div Dept Clean Fuel & Power Generat 156 Gajeongbuk Ro Daejeon 34103 South Korea|Univ Sci & Technol UST Environm & Energy Mech Engn KIMM Campus 217 Gajeong Ro Daejeon 34103 South Korea;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Reversible solid oxide fuel cell (RSOFC); Fuel recirculation; Ejector; Waste heat; Energy storage; Optimization;

    机译：可逆的固体氧化物燃料电池（RSOFC）;燃料再循环;喷射器;废热;储能;优化;

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