Two-dimensional numerical study of porous media combustion-heater

SHI Junrui; XIE Maozhao; HAN Chunfu; LI Jun; LI Gang

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Two-dimensional numerical study of porous media combustion-heater

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- Two-dimensional numerical study of porous media combustion-heater
- CIESC Journal Issue 5, Pages: 1116-1120(2009)
- 作者机构：
  
  1. 沈阳工程学院沈阳市循环流化床燃烧技术重点试验室
  2. 大连理工大学能源与动力学院
  3. 大连大学建筑工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 May 2009，
  
  Published：05 May 2009
- 稿件说明：
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SHI Junrui, XIE Maozhao, HAN Chunfu, et al. Two-dimensional numerical study of porous media combustion-heater[J]. CIESC Journal, 2009, (5): 1116-1120.
DOI：

SHI Junrui, XIE Maozhao, HAN Chunfu, et al. Two-dimensional numerical study of porous media combustion-heater[J]. CIESC Journal, 2009, (5): 1116-1120. DOI：

摘要

通过二维数值模型研究了多孔介质燃烧-换热器。在宽广的工况范围内，研究多孔介质燃烧-换热器内的温度、速度分布和压力损失，研究主要工作参数过量空气系数和功率对换热管总的热效率的影响。结果表明，过量空气系数和功率对总的热效率有显著的影响，随二者的增大，总的热效率降低。实验验证了数值计算结果的有效性。

Abstract

The two-dimensional numerical investigations on the porous media combustion-heater were presented.Temperature distribution，velocity profiles，and pressure loss were investigated in a wide range of operation parameters.Attention was focused on the influence of the dominating parameters，i. e.，the excess air ratio and firing rate，on the thermal efficiency.The results showed that the excess air ratio and firing rate had significant influence on thermal efficiency，and the overall thermal efficiency decreased with increasing excess air ratio or firing rate.Numerical results were validated against experiment data.

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