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Performances of a heat exchanger and pilot boiler for the development of a condensing gas boiler

机译：冷凝式燃气锅炉开发中的热交换器和引燃锅炉的性能

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摘要

In this research, design factors for a heat exchanger and boiler were investigated using a simplified model of a heat exchanger and pilot condensing boiler, respectively. Specifications of each heat exchanger component (e.g., upper heat exchanger (UHE) and lower heat exchanger (LHE); coil heat exchanger (CHE); baffles) were investigated using a model apparatus, and the comprehensive performance of the pilot gas boiler was examined experimentally. The heating efficiency of the boiler developed was about 90% when using the optimal designed heat exchangers. Compared to a conventional Bunsen-type boiler, the heating efficiency was improved about 10%. Additionally, NO_x and CO emissions were about 30 ppm and 160 ppm, respectively, based on a 0% O_2 basis at an equivalence ratio of 0.70, which is an appropriate operating condition. However, the pollutant emission of the boiler developed is satisfactory considering the emission performance of a condensing boiler, even though CO emission must be reduced.
机译：在这项研究中，分别使用换热器和中试冷凝锅炉的简化模型研究了换热器和锅炉的设计因素。使用模型设备研究了每个热交换器组件（例如，上热交换器（UHE）和下热交换器（LHE）；盘管热交换器（CHE）；挡板）的规格，并检查了中试燃气锅炉的综合性能实验上。使用最佳设计的热交换器时，所开发锅炉的加热效率约为90％。与传统的本生式锅炉相比，加热效率提高了约10％。此外，基于0％的O_2，当量比为0.70时，NO_x和CO排放分别约为30 ppm和160 ppm，这是一个适当的工作条件。但是，考虑到冷凝锅炉的排放性能，即使必须减少CO排放，所开发锅炉的污染物排放也是令人满意的。

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  • 来源
    《Energy》 |2011年第7期|p.3945-3951|共7页
  • 作者

    Seungro Lee; Sung-Min Kum; Chang-Eon Lee;

  • 作者单位

    Department of Mechanical Engineering, Inha University, 253 Yonghyun-Dong, Nam-Gu, Incheon 402-751, Republic of Korea;

    School of Mechanical and Automotive Engineering, Halla University, Wonju 220-712, Republic of Korea;

    Department of Mechanical Engineering, Inha University, 253 Yonghyun-Dong, Nam-Gu, Incheon 402-751, Republic of Korea;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    condensing boiler; heat exchanger; pilot boiler; no_x and co emissions;

    机译：冷凝锅炉热交换器;中试锅炉no_x和co排放;

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