Experimental studies of liquid mixing characteristics by use of a perforated tray under inclined conditions were conducted in an air-water system. The degree of liquid mixing was determined experimentally by a tracer technique to measure the distribution of residence time of the liquid. Twomodels are used for analysis. These models are: 1. Completely mixed pools without feedback 2. Completely mixed pools with feedback The degree of liquid mixing is independent of the F-factor if the tray leans

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... o the same degree. Because of the gravitational effect and liquid velocity on the tray, the lowest degree of liquid mixing is obtained when the tray leans toward the outlet weir and highest when the tray leans toward inlet weir. By the outlet weir efiFect, the minimumvalue of degree of liquid mixing was obtained for every angle of incline.