Air-cooled heat exchanger applied to external rotary kiln wall in forced and natural draft
作者： F. Huchet , M. Piton , A. Del Barrio , O. Le Corre , B. Cazacliu
DOI: 10.1016/J.ENCONMAN.2017.11.031
关键词: Heat exchanger 、 Kiln 、 Thermal 、 Buoyancy 、 Combined forced and natural convection 、 Chemistry 、 Forced convection 、 Mechanical engineering 、 Rotary kiln 、 Convective heat transfer
摘要: Abstract The present paper deals with experimental measurements performed within a heat exchanger devoted to the thermal rotating machineries. device is based on rotor-stator system scaled from an industrial rotary kiln. recovery able capture losses while kiln wall cooled. inner moving wall-to-air exchanges measured through insulated external shell are compared values established in various flow conditions similar geometry. convection regimes distinguished according different forces exerted fluid air motion: buoyancy being inertial effects combining centrifugal and axial motions. General scaling relationships natural, mixed forced proposed extended range of Richardson numbers.
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