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نویسندگان مقالات پربازدید :
مهندسی حرارتی کاربردی
جزئیات رویداد
همایش ، رویداد ، ژورنال
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  • numerical and experimental thermal analysis of an industrial kiln used for frit production

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    • تاریخ ارائه: 1392/01/01
    • تاریخ انتشار در تی پی بین: 1392/01/01
    • تعداد بازدید: 553
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     this paper describes a methodology for the study and modeling of the thermal energy in ceramic frit melting kilns with an oxy-fired combustion process through the development of a numerical simulation in cfd software. ceramic frits are vitreous compounds that provide glazes with specific properties for use in the coating of other ceramics, especially those of the ceramic tile industry. the aim of this study is to generate technical subsidies in order to support economically viable proposals for the ceramic industry. the cfd modeling is performed using the commercial software ansys cfx 11.0, which is based on the method of finite volumes. the geometric domain of resolution consists of the internal cavity of the kiln. the cfd resolution is coupled to a three-dimensional heat conduction code along the kiln walls to determine the external temperature distribution. the thermal problem is composed of the combustion of natural gas with oxygen, the internal turbulent flow of exhaust gases, the energy loss by convection and radiation to the environment through the walls and the radiation within the kiln cavity with participating media. data collected in an operating kiln are used to verify the numerical solution, achieving a good agreement in the general analysis of the kiln. the numerical solution provides physically consistent results, making it possible to predict the behavior of the kiln as a whole in similar cases with changes in the parameters of the manufacturing process or in the geometry. other specific results, such as heat flux inside the kiln, are presented and discussed.

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