Investigation of the interrelation of some of the dominating variables of a Las Salinas type solar still.
Barry, James H.
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Solar stills similar to the type first built in las Salinas, Chile, in 1872, are today the type which show the greatest promise for utilization of solar energy for the conversion of sea water to fresh water. In this paper, a method of improving the efficiency of such a solar still "by cooling the condensing surfaces with sea water is investigated. Results are negative in that "by so doing the efficiency of the still is decreased. A dimensional analysis provided a possible correlation of the yield of a solar still with the temperature of the water in the evaporating tray, and the temperature of the external glass surface. This correlation should prove useful in future efforts to design and operate solar stills at maximum efficiency, and might have applications in related fields of heat transfer.
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