| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an apparatus and a method for producing seawater salt, by which seawater is efficiently evaporated without using any special power and seawater salt rich in mineral components can be obtained. <P>SOLUTION: A vacuum double tube 1 is used which has a double tube structure of a U-shaped inner tube 4 and outer tube 5 having a seawater storage part 3 and in which a vacuum layer 6 is formed between those inner tube 4 and outer tube 5 and a heat collecting film 7 is disposed on a peripheral part 4a of the inner tube 4 so as to cover the seawater storage part 3. Seawater is stored in the seawater storage part 3 from the top opening 2 of the inner tube 4, the top opening 2 is airtightly blocked up with a cover 8, and sunlight is allowed to penetrate to the inner tube 4 through the outer tube 5 to collect solar heat by the heat collecting film 7, whereby the seawater in the seawater storage part 3 is evaporated, steam generated in the seawater storage part 3 is drawn out to the outside as freshwater T through a steam pipe 9 connected to the cover 8, and a salt-containing solid component crystallized in the seawater storage part 3 is taken out. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
