Some of the key technical problems inherent in the design of equipment for the absorption, freezing, vapor-compression process for the production of pure water from salt water were investigated in laboratory studies. These included the comparison of various solvents for water vapor in the freezer-absorber unit, the determination of water mass transfer rates into concentrated salt solution in the refrigerated absorber, and the measurement of mass transfer coefficients for the absorption of water into a solvent stream that flows over horizontal tubes. The results showed that changes of the solvent can have only a small effect on the power required, that the resistance to heat transfer in the absorber has a greater effect than the resistance to mass transfer. Accumulation of air in the absorber vapor can be important.
Mass transfer and thermodynamic studies of evaporative freezing of water
Untersuchung von Massenuebergang und Thermodynamik bei der Verdampfungskuehlung von Wasser
US Government Reports ; Jun ; 1-37
1983
37 Seiten
Report
Englisch
EVAPORATIVE MASS TRANSFER IN TUBULAR SOLAR STILL
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