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《Journal of Chemical Industry and Engineering(China)》 2009-02
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Excess enthalpy combustion characteristics in reciprocal porous media combustion system with heat recirculation

WANG Guanqing1,2,CHENG Leming1,ZHENG Chenghang1,LUO Zhongyang1,CEN Kefa1(1State Key Laboratory of Clean Energy Utilization,Zhejiang University,Hangzhou 310027,Zhejiang,China;2Institute of Applying Mathematics and Engineering Calculating,Hangzhou Dianzi University,Hangzhou 310018,Zhejiang,China)  
Excess enthalpy combustion characteristics of low heating value gas were numerically investigated in a novel model of reciprocal porous media combustion system with heat recirculation.Based on the comparison of the model with the experimental results,the effective of the model was verified,and the mechanism of excess enthalpy combustion in the system was clarified.The influence of the conditional and material characteristic parameters on the excess enthalpy characteristics were analyzed including half period,heating value,secondary air ratio,heat capacity ratio,optical thickness,convective coefficient etc.The excess enthalpy combustion can be obtained in the system when the dimensionless heating value is no more than 3.48.The lower the heating value,the higher the level of the excess enthalpy is.The results also showed that the combustion efficiency was seldom influenced by those parameters and kept a high level at the steady combustion state,which further proved the high effectiveness of porous media combustion.
【Fund】: 国家高技术研究发展计划项目(2006AA05Z223);; 教育部高等学校博士点基金项目(20070335138)~~
【CateGory Index】: TK124
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