• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of thermal analysis and calorimetry >Modeling the propane combustion process within a micro-catalytic porous combustor by using the lattice Boltzmann method
【24h】

Modeling the propane combustion process within a micro-catalytic porous combustor by using the lattice Boltzmann method

机译：Modeling the propane combustion process within a micro-catalytic porous combustor by using the lattice Boltzmann method

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相关主题

摘要

Understanding the micro-catalytic porous combustion mechanisms is vital importance in improving the energy conversion efficiency of a combustion process. However, the investigation on this issue is still challenging due to the complex multiple physicochemical and thermal coupled transport mechanisms occurring in this process. In this work, a coupled lattice Boltzmann model is developed for modeling propane catalytic combustion process within a micro-catalytic porous combustor, in which the coupled transport mechanisms including multi-component gases flow, mass and heat transfers, as well as the heterogeneous catalytic combustion reaction are fully considered. Then, a systematic analysis regarding operating conditions and pore structure parameters was performed to disclose the micro-catalytic porous combustion mechanisms and dominated factors in determining the conversion efficiency. Results show that the conversion efficiency of propane in the micro-catalytic porous combustor majorly depends on the equivalence ratio, gas temperature and support materials properties. With an increment of the equivalence ratio, the conversion efficiency was improved firstly and then reduced, and an optimal combustion performance can be achieved where the equivalence ratio is equal to the chemical equivalent value. As the gas temperature increases, the conversion efficiency rises tremendously. To achieve a desirable combustion performance, the high gas temperature (> 700 K) should be maintained. Moreover, the support materials change the heat transfer and heat loss of the combustor, and the support materials with a low thermal conductivity or thermal diffusivity can reduce the heat loss and therefore enhance the conversion efficiency.

著录项

获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号