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首页> 外文期刊>Science and Technology for the Built Environment >Application of absorption heat pump and direct-contact total heat exchanger to advanced-recovery flue-gas waste heat for gas boiler
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Application of absorption heat pump and direct-contact total heat exchanger to advanced-recovery flue-gas waste heat for gas boiler

机译：吸收热泵的应用和直接接触总热交换器对燃气锅炉提前恢复烤烟废热

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摘要

This paper presents a new technology based on a direct-fired absorption heat pump and a direct-contact total heat exchanger. An analysis of existing techniques for heat recovery shows that the limiting factors of condensing heat recovery are return-water temperature and the ability of air to recover heat. In addition, severe corrosion usually exists in indirect-contact heat exchangers where the flue gas and cool water flow. This new technology solves these problems. A 29-MW gas boiler was transformed by the new technology, having been tested throughout an entire heating season. As a result, the exhaust gas of the direct-contact total heat exchanger decreased to 27.4 degrees C, with an average COPh and COPove,h of approximately 1.69 and 1.57, respectively. The mean heat recovered was 2.67 MW, yielding a heating efficiency increase of 11.54% and a saving in natural gas consumption of 8.75 x 10(5) Nm(3) per year. Testing showed that the NOx reduction rate was 10.48% and the condensation water flow was 3.11 t/h. Hence, this technology achieved excellent results for both energy conservation and emission reduction, thereby proving the feasibility of its large-scale application.
机译：本文介绍了一种基于直接发射热泵和直接接触总热交换器的新技术。对热回收的现有技术的分析表明，冷凝热回收的限制因素是返回水温和空气回收热量的能力。此外，严重的腐蚀通常存在于间接接触热交换器中，其中烟道气和冷水流动。这项新技术解决了这些问题。通过新技术改变了29兆瓦的燃气锅炉，在整个加热季节进行了测试。结果，直接接触总热交换器的废气降低至27.4℃，平均COPH和Copove，H分别为约1.69和1.57。恢复的平均热量为2.67兆瓦，加热效率增加11.54％，每年储能的天然气消耗量为8.75×10（5）纳米（3）。测试表明，NOx还原率为10.48％，冷凝水流量为3.11吨/小时。因此，该技术对节能和减排的效果很好，从而证明了其大规模应用的可行性。

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  • 作者

    Li Feng; Lin Duanmu; Fu Lin; Zhao Xiling;

  • 作者单位

    Univ Technol Fac Infrastruct Engn Jinzhou Liaoning Peoples R China;

    Univ Technol Fac Infrastruct Engn Jinzhou Liaoning Peoples R China;

    Tsinghua Univ Sch Architecture Dept Bldg Sci Bldg Energy Res Ctr 301 Beijing 100084 Peoples R China;

    Tsinghua Univ Sch Architecture Dept Bldg Sci Bldg Energy Res Ctr 301 Beijing 100084 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 建筑基础科学;
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