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Главная Архив Thermal Letter Оргкомитет Будущие конференции AIHTC
International Heat Transfer Conference 6

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

HEAT TRANSFER AND FRICTION LOSS IN FLOWS NORMAL TO STACKS OF PERFORATED PLATES

C.P. Lee
Linde Division, Union Carbide Corp., Tonawanda, N.Y. 14150

Wen-Jei Yang
Department of Mechanical Engineering and Applied Mechanics University of Michigan, Ann Arbor, Michigan 48109-2125, U.S.A.

DOI: 10.1615/IHTC6.1430
pages 625-630

Аннотация

Heat transfer and friction loss performance for flows normal to stacks of perforated plates are experimentally studied in a subsonic wind tunnel. The hole diameter, longitudinal and transverse pitches, plate spacing, and flow velocity are varied. It is disclosed that this physical arrangement produces high thermal effectiveness and there exist two distinct regimes of heat transfer performance. The enhancement in the heat transfer and flow friction factors is intimately related to the edgetone phenomenon which exhibits the characteristics of the jet tone. Some guidelines are recommended for practical design considerations of perforated heat exchangers to achieve the optimum performance.

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