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Study of the Thermal Behavior of Multi Tube Tank in Heat Recovery from Chimney—Analysis and Optimization

机译：烟囱余热回收中多管罐热行为的分析与优化

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摘要

This work discusses the utilization of multi tube tank heat exchanger for waste heat recovery. The thermal behavior of the system is studied in order to understand the contribution of the different heat transfer modes governing the system. As application, heating water in residential application from chimney heat recovery is considered. A prototype illustrating the suggested system is implemented and tested. Different waste heat scenarios by varying the quantity of burned firewood (heat input) are experimented. The temperature at different parts of the system and the gas flow rates of the exhaust pipes are measured. Measurements showed that the temperature of 95 L tank of water can be increased by 68°C within one hour. Obtained results show that the convection and radiation exchanges at the bottom surface of the tank have a considerable impact on the total heat transfer rate of the water (as high as 70%). Moreover, the proposed system allows saving 9.8 L of gasoline, 10.6 L of diesel or 15 kg of wood for 12 hours of chimney operation.
机译：这项工作讨论了利用多管式槽式热交换器回收废热。为了了解控制系统的不同传热模式的贡献，研究了系统的热行为。作为应用，考虑了烟囱热回收在住宅应用中的热水。实施并测试了说明建议系统的原型。通过改变柴火的燃烧量（热量输入）来试验不同的余热情景。测量系统不同部分的温度和排气管的气体流速。测量表明，一小时内95 L水箱的温度可以提高68°C。获得的结果表明，水箱底部表面的对流和辐射交换对水的总传热率（高达70％）有很大影响。此外，建议的系统可在烟囱运行12小时后节省9.8升汽油，10.6升柴油或15公斤木材。

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  • 来源
    《Heat Transfer Engineering》 |2018年第8期|399-409|共11页
  • 作者

    Mahmoud Khaled; Mohamad Ramadan;

  • 作者单位

    Lebanese International University LIU, Beirut, Lebanon,University Paris Diderot, Paris, France;

    Lebanese International University LIU, Beirut, Lebanon;

  • 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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