Abstract
THE development of the water-still has been slow, the normal type of apparatus being an externally heated metal boiler and a condenser. These are very inefficient, due to the fact that the number of calories required to heat the incoming cold water to boiling point is small compared with the heat required to convert the water into steam, and many kilowatts are required for an output of 20 gallons per hour. There is also the disadvantage of fur deposition from hard water, which can be diminished by taking only a fraction of the rated output.
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Distilled Water. Nature 154, 49–50 (1944). https://doi.org/10.1038/154049d0
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DOI: https://doi.org/10.1038/154049d0