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Air-cooled heat exchanger applied to external rotary kiln wall in forced and natural draft

机译：风冷换热器以自然通风方式应用于回转窑外壁

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摘要

The present paper deals with experimental measurements performed within a heat exchanger devoted to the thermal rotating machineries. The device is based on a rotor-stator system scaled from an industrial rotary kiln. The thermal recovery system is able to capture the heat losses while the kiln wall is cooled. The inner moving wall-to-air heat exchanges measured through the insulated external shell are compared to the values established in various flow conditions similar to the present geometry. The thermal convection regimes are distinguished according to the different forces exerted on the fluid air motion: the buoyancy forces being compared to the inertial effects combining the centrifugal and the axial motions. General scaling relationships devoted to the natural, mixed and forced convection regimes are proposed in an extended range of the Richardson numbers.
机译：本文涉及在专用于热旋转机械的热交换器内进行的实验测量。该设备基于工业旋转窑上的定转子系统。当窑壁冷却时，热回收系统能够捕获热量损失。将通过绝缘外壳测得的内部移动壁对空气的热交换与在类似于当前几何形状的各种流动条件下建立的值进行比较。根据对空气运动施加的不同力来区分热对流方式：将浮力与结合离心运动和轴向运动的惯性作用进行比较。在扩展的理查森数范围内，提出了与自然，混合和强迫对流方式有关的一般比例关系。

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  • 来源
    《Energy Conversion & Management》 |2017年第12期|517-525|共9页
  • 作者

    Huchet F.; Piton M.; Del Barrio A.; Le Corre O.; Cazacliu B.;

  • 作者单位

    IFSTTAR, MAST Dept, GPEM Lab, Route Bouaye BP4129, F-44341 Bouguenais, France;

    IFSTTAR, MAST Dept, GPEM Lab, Route Bouaye BP4129, F-44341 Bouguenais, France;

    IFSTTAR, MAST Dept, GPEM Lab, Route Bouaye BP4129, F-44341 Bouguenais, France;

    IMT Atlantique Bretagne Pays Loire, GEPEA, UMR 6144, 4 Rue A Kastler, F-44307 Nantes 3, France;

    IFSTTAR, MAST Dept, GPEM Lab, Route Bouaye BP4129, F-44341 Bouguenais, France;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Mixed convection; Open-ended cavity; Tangential inlet;

    机译：混合对流;开放式腔;切向入口;

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