Bulletin of the Society of Sea Water Science, Japan
Online ISSN : 2185-9213
Print ISSN : 0369-4550
ISSN-L : 0369-4550
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Volume 45, Issue 1
Displaying 1-8 of 8 articles from this issue
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  • Electrochemical Processes Using Ion Exchange Membrane as a Solid Polymer Electrolyte
    Hiroyasu TAKENAKA
    1991 Volume 45 Issue 1 Pages 3-10
    Published: 1991
    Released on J-STAGE: February 19, 2013
    DOIhttps://doi.org/10.11457/swsj1965.45.3
    JOURNAL FREE ACCESS
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  • An Electrodialysis Desalination System Powered by Photovoltaic Power Generation
    Setsuo INOUE, Nobuyoshi SOMA, Tetsuyoshi ISHIDA
    1991 Volume 45 Issue 1 Pages 11-15
    Published: 1991
    Released on J-STAGE: February 19, 2013
    DOIhttps://doi.org/10.11457/swsj1965.45.11
    JOURNAL FREE ACCESS
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  • A Study of the Spray Flash Desalination
    Effect of Nozzle Shape
    Haruo UEHARA, Akio MIYARA, Toru KOGA, Masaki HINO, Erich STUHLTRÄ ...
    1991 Volume 45 Issue 1 Pages 16-21
    Published: 1991
    Released on J-STAGE: February 19, 2013
    DOIhttps://doi.org/10.11457/swsj1965.45.16
    JOURNAL FREE ACCESS
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    An experimental study of the spray flash desalination has been made. Superheated water isinjected into the low pressure chamber through a nozzle. Temperature of the superheated wateris 30°C lower than that of conventional desalination plant, which is nearly equal to temperature ofthe surface seawater temperature. Effect of nozzle shape is studied by using three types of nozzles: cylindrical, oblong and 4-holes. The reduction of the non-equilibrium temperature difference (NETD) and phenomena of the spray flash evaporation are shown. The spray flash evaporation is enhancedbest with the 4-holes nozzle. Desalination water is obtained sufficiently by any of the three types of nozzles.
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  • Efficiency of Spray Flash Evaporation
    Toshiyuki HASHIMOTO, Takehiko YOTSUMOTO, Seiji ARIURA, Osamu MIYATAKE
    1991 Volume 45 Issue 1 Pages 22-28
    Published: 1991
    Released on J-STAGE: February 19, 2013
    DOIhttps://doi.org/10.11457/swsj1965.45.22
    JOURNAL FREE ACCESS
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    An experimental study was carried out to determine the efficiency of spray flash evaporationoccurring in a superheated water jet injected vertically downward through a simple tubular nozzle.The range of experimental variables include: superheats from 0.3 to 8.0 K, liquid flow rates from 0.83 to 2.50 kg/s, liquid temperatures from 40 to 80°C, and nozzle diameters 21.2 and 28.1 mm.
    As a result of these experiments, it was realized that, for liquid superheats greater than 3 K, evaporation efficiency of higher than 0.8 was obtained at most experimental conditions tested andthe present type of liquid jet injected vertically downward was more effective than the types of jetinjected vertically upward and horizontally. It was also realized that these experimental resultscould be applied to design for a spray flash evaporator of large scale by adopting a multi-nozzle type.
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  • Influence of Sea Water on Boron Isotopic Ratios of Hot Spring Waters in Japan
    Takao OI, Masaaki MUSASHI, Masao NOMURA, Tomoko OSSAKA, Makoto OKAMOTO ...
    1991 Volume 45 Issue 1 Pages 29-34
    Published: 1991
    Released on J-STAGE: February 19, 2013
    DOIhttps://doi.org/10.11457/swsj1965.45.29
    JOURNAL FREE ACCESS
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    Boron isotopic ratios (11B/10B) of 27 hot spring waters in Japan were measured. Average boroncontent of the hot spring waters was 7.52 mg/dm3 and the 11B/10B value varied from 4.023 to 4.107.
    On the basis of the 11B/10B value, the hot spring waters examined can be classified into twogroups: the one with higher 11B/10B values (>4.07) and the other with lower 11B/10B values (<4.07). The geographical distribution of the two groups is rather systematic; the hot springs inHakone and Kusatsu-shirane in the Chubu district and those in the Tohoku district show the higher11B/10B values, while hot springs of the other areas show lower values. The former is consideredto be influenced by the sea water which has the highest 11B/10B value among natural terrestrialmaterials ever examilled. This is best understood by considering the subduction process of the Pacific Ocean plate in which boron with the marine origin is taken into magmas.
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  • [title in Japanese]
    1991 Volume 45 Issue 1 Pages 35-37
    Published: 1991
    Released on J-STAGE: February 19, 2013
    DOIhttps://doi.org/10.11457/swsj1965.45.35
    JOURNAL FREE ACCESS
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  • Evaporated Salt Production in China
    Rep ort of the 2nd Technical Mission to Solution Mining Research Institute in Zigong
    Masayoshi MURAKAMI, Takesi FUJITA, Toru KAGEYAMA
    1991 Volume 45 Issue 1 Pages 38-47
    Published: 1991
    Released on J-STAGE: February 19, 2013
    DOIhttps://doi.org/10.11457/swsj1965.45.38
    JOURNAL FREE ACCESS
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  • Science of the Moshio-Yaki, Ancient Salt Making in Japan (Part 1)
    Masayoshi MURAKAMI
    1991 Volume 45 Issue 1 Pages 48-52
    Published: 1991
    Released on J-STAGE: February 19, 2013
    DOIhttps://doi.org/10.11457/swsj1965.45.48
    JOURNAL FREE ACCESS
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