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ISSN Online: 2377-424X

ISBN Print: 0-89116-130-9

International Heat Transfer Conference 6
August, 7-11, 1978, Toronto, Canada

PERFORMANCE OF A FLUIDIZED BED COOLING TOWER

Get access (open in a dialog) DOI: 10.1615/IHTC6.2100
pages 111-116

Résumé

Although two-phase fluidization has received considerable attention in literature, studies on three phase beds in which particles were fluidized by a co-current or counter-current flow of liquid and gas are relatively sparse. High contact efficiencies reported for the fluidized bed contactor in other applications make it attractive to investigate its use as a cooling tower. The development of a fluidized bed cooling tower will mean more efficient, smaller tower, hence decreased capital investment.
Analytical investigation of the performance of a fluidized bed cooling tower is carried out using a single stage equilibrium model for various parameters like ratio of liquid to gas loading, inlet air and water condition etc. The predicted values are compared with the experimental investigations carried out. The agreement between the two is good. It is observed that the performance of this type of cooling tower improves as the temperature of the inlet water increases. The exit air gets saturated for large values of liquid to gas ratio. For a small packing height itself the temperature drop of the hot water is quite considerable, of the order of 10−16 °C. The good agreement between theory and experiment indicates that the single stage equillibrium model is quite adequate for predicting the performance of the fluidized bed cooling tower.