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ISSN Online: 2377-424X

International Heat Transfer Conference 3
August, 7-12, 1966, Chicago, USA

NATURAL CONVECTION HEAT TRANSFER IN SHORT VERTICAL CHANNELS INCLUDING THE EFFECTS OF STAGGER

Get access (open in a dialog) DOI: 10.1615/IHTC3.920
pages 121-125

Résumé

Natural convection air flows were studied experimentally in straight and staggered, short vertical channels with constant heat flux boundary conditions. Straight channel Nusselt numbers agreed with the semi-empirical predictions of Elenbaas (1) and the analytical predictions of Engel (4). When channel stagger was introduced into very short channels, the Nusselt number increased significantly and the exit wall temperatures were reduced. This effect persisted beyond the meeting point of the two wall boundary layers. However, as channel length is increased, the relative advantage of stagger decreases and performance falls eventually below that of a single straight channel.