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《Journal of Anhui Agricultural Sciences》 2008-16
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Experiment and Analysis of Hearth Temperature Distribution in Hot-blast Heating Stove for Straw Briquette

GUO Qian-hui et al (Key Laboratory of Renewable Energy of Agriculture Ministry,Henan Agricultural University,Zhengzhou,Henan 450002)  
[Objective] The research aimed to understand the hearth temperature distribution in hot-blast heating stove for biomass briquette.[Method] Under 4 kinds of working conditions(αpy of air door being 1.20,1.60,2.30、3.50),the hearth temperature distribution in hot-blst heating stove for straw briquette was analyzed.[Result] The hearth temperature changes in the vertical direction and depth direction under 4 kinds of different working conditions showed the similar laws,which was different with that in depth direction.Inside the fuel layer,the hearth temperature increased suddenly when the hearth temperature reached certain degree and reached the maximum.The hearth temperature around the stove mouth was lower and that at 15 cm from the stove mouth reached the peak values under 4 kinds of working conditions.Under the 2nd and 3rd working conditions,the hearth atmosphere mixed with fuels fully,with fast burning velocity of fuels and higher hearth temperature.And the changing amplitude of the hearth temperature was small.[Conclusion] When αpy was 1.6,the hearth temperature in the hot-blast heating stove for straw briquette was well-distributed in the hearth vertical direction,depth direction,width direction with fast burning velocity of fuels and high burning efficiency.
【Fund】: 郑州市科技局科技攻关项目(052SGYG34150)
【CateGory Index】: S210.43
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