The Experimental Investigation on the Combustion of a Carbon Globule in a Gas Stream

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概要

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• By measuring the weight of a carbon globule hung in a hot gas stream from a precise balance, the burning rate of a carbon globule was determined and the temperature of the carbon globule was measured with an optical pyrometer. The conditions selected for the experiments were as follows : Concentration of oxygen in the gas stream Co_2=5.7,15.6 and 21.0% Initial diameter of he carbon globule 2r_i=6.2,8.9,12.3 and 16.0 mm Velocity of the gas stream U_g=5,10,15 and 20 m/sec Temperature of the gas stream t_g=800 and 900℃ By comparing the results of these investigations with those of the published theoretical analysis, it has been concluded that 1) the experimental results qualitatively agree with the theoretical ones in every respect, 2) the burning rate of a carbon globule changes proportionally to U_g^<0.45> and (r_i/r)^<0.46> in an air stream, 3) the combustion rate of a carbon globule changes nearly in proportion to Co_2/1.2,4) decreasing of the oxygen contained in a gas stream decreases the effects of the velocity of gas stream and radius of a carbon globule on the burning rate of the carbon globule decrease.

• 一般社団法人日本機械学会の論文

著者

• Kikkawa Shinzo

  Faculty Of Engineering Doshisha University

• SUGAWARA Sugao

  Faculty of Engineering, Kansai University

• Sugawara Sugao

  Faculty Of Engineering Kansai University

• SODA Keiichi

  Japan Exlan Co. Ltd.

• Sugawara S.

  Faculty of Engineering, Kansai University

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• The Experimental Investigation on the Transpiration Cooling : (2nd Report, Coolling Effectiveness and Heat Transfer Performance of Gaseous Coolant)
• Fundamental Investigation on the High Intensity Combustion : 1st Report, On the Local Combustion Efficiency in an Upright Combustion Chamber
• The Thermo-Aerodynamical Analysis of Combustion Gas Flow : 2nd Report, One Dimensional Theory of Annular Combustion Chamber
• STUDIES ON MODE OF OCCURRENCE OF α-GLUCOSIDASE　ACTIVITIES IN MOLD（ASPERGILLUS ORYZAE）
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