| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing fresh water from seawater environmentally friendly by utilizing both the sunlight energy in coastal areas of the sea or salt lakes and the cooling capacity of the sea or the salt lakes. SOLUTION: This method uses a fresh water producing apparatus. The apparatus consists mainly of a steam generating unit 2 which is provided with a shell unit 2a constituting a body and a sunlight receiving unit 2b and in which the outer peripheral part of the shell unit 2a is covered by a thermally insulating material 8 and which internally has a salt water storage section and a steam generating space, a dew condensation generating unit 3 which is immersed into the water for moving and cooling the steam to cause dew condensation, and a communicative connection unit 4 which has a communicate connection cavity for moving the steam between the steam generating unit 2 and the dew condensation generating unit 3 and the outer peripheral part is covered with the thermally insulating material 8. The apparatus is also provided with a salt water feeder 5 to the steam generating unit 2 and a fresh water recovering device 6 from the dew condemnation generating unit 3, and also with a member 7 for suppressing convection and waving of the salt water near the water surface of the salt water storage section of the steam generating unit 2.
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