Evaporation of Water With Single and Multiple Impinging Air Jets

[+] Author and Article Information
T. A. Trabold, N. T. Obot

Fluid Mechanics, Heat and Mass Transfer Laboratory, Department of Chemical Engineering, Clarkson University, Potsdam, NY 13699

J. Heat Transfer 113(3), 696-704 (Aug 01, 1991) (9 pages) doi:10.1115/1.2910620 History: Received December 04, 1989; Revised August 08, 1990; Online May 23, 2008


An experimental investigation of impingement water evaporation under a single jet and arrays of circular jets was made. The parametric study included the effects of jet Reynolds number and standoff spacing for both single and multiple jets, as well as surface-to-nozzle diameter ratio and fractional nozzle open area for single and multiple jets, respectively. The nozzle exit temperature of the air jet, about the same as that of the laboratory, was 3–6° C higher than that of the evaporating water. Predictive equations are provided for mass transfer coefficient in terms of the flow and geometric conditions.

Copyright © 1991 by The American Society of Mechanical Engineers
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