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Experimental and computational studies on a gasifier based stove

机译：基于气化炉的实验和计算研究

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摘要

The work reported here is concerned with a detailed thermochemical evaluation of the flaming mode behaviour of a gasifier based stove. Determination of the gas composition over the fuel bed, surface and gas temperatures in the gasification process constitute principal experimental features. A simple atomic balance for the gasification reaction combined with the gas composition from the experiments is used to determine the CH_4 equivalent of higher hydrocarbons and the gasification efficiency (ηg). The components of utilization efficiency, namely, gasification-combustion and heat transfer are explored. Reactive flow computational studies using the measured gas composition over the fuel bed are used to simulate the thermochemical flow field and heat transfer to the vessel; hither-to-ignored vessel size effects in the extraction of heat from the stove are established clearly. The overall flaming mode efficiency of the stove is 50-54%; the convective and radiative components of heat transfer are established to be 45-47 and 5-7% respectively. The efficiency estimates from reacting computational fluid dynamics (RCFD) compare well with experiments.
机译：此处报道的工作涉及对基于气化炉的灶具燃烧模式行为的详细热化学评估。气化过程中燃料床上方气体成分，表面和气体温度的确定是主要的实验特征。结合实验中的气体成分，使用简单的原子平衡进行气化反应，以确定高级烃的CH_4当量和气化效率（ηg）。探讨了利用效率的组成，即气化燃烧和传热。利用在燃料床上的测得气体成分进行的无功流量计算研究被用于模拟热化学流场和向容器的热传递。从炉灶中吸取热量的过程中，迄今可以忽略的容器尺寸影响已得到明确证实。炉子的整体燃烧方式效率为50-54％；传热的对流和辐射分量分别为45-47和5-7％。从反应计算流体动力学（RCFD）得出的效率估算值与实验结果相吻合。

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  • 来源
    《Energy Conversion & Management》 |2012年第1期|p.135-141|共7页
  • 作者

    S. Varunkumar; N.K.S. Rajan; H.S. Mukunda;

  • 作者单位

    Combustion, Gasification and Propulsion Laboratory, Department of Aerospace Engineering, Indian Institute of Science, Bangalore 560 012, India;

    Combustion, Gasification and Propulsion Laboratory, Department of Aerospace Engineering, Indian Institute of Science, Bangalore 560 012, India;

    Combustion, Gasification and Propulsion Laboratory, Department of Aerospace Engineering, Indian Institute of Science, Bangalore 560 012, India;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    gasifier stove; biomass combustion; gasification efficiency;

    机译：气化炉生物质燃烧气化效率;

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