IGTC-14 HEAT TRANSFER AND FLOW FRICTION CHARACTERISTICS FOR FIN GEOMETRIES OF EXTRUDED CERAMIC REGENERATOR CORE(Session A-4 Heat Transfer IV (Heat Exchanger))

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概要

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• Ceramic matrix cores having various fin geometry were prepared by extrusion process. The heat transfer and flow friction characteristics for their cores were measured and effect of fin geometry on heat exchanger thermodynamic performance was investigated. The overall fin efficiency (J/F) showing efficiency of heat exchange which is based on unit cell of fin is dependent on manufacturing process. As the extrusion process can produce the ceramic regenerator core with homogeneous cell shape and smooth surface of cell wall compared with other processes, J/F value is the highest in the case of extrusion process. J/F also depends on cell shape of fin geometry and is large in the order of triangular, square and rectangular cell shapes. Though overall fin efficiency (J/F) slightly decreases with an increase in cell density, namely a decrease in hydraulic diameter of fin, exchanger heat transfer effectiveness (ε) showing efficiency of heat exchange for whole regenerator core increases with increasing cell density.

• 公益社団法人日本ガスタービン学会の論文

著者

• Matsuhisa T.

  Ngk Insulators Ltd.

• Oda I.

  NGK Insulators, LTD.

関連論文

• IGTC-14 HEAT TRANSFER AND FLOW FRICTION CHARACTERISTICS FOR FIN GEOMETRIES OF EXTRUDED CERAMIC REGENERATOR CORE(Session A-4 Heat Transfer IV (Heat Exchanger))

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