| 摘要 |
PURPOSE:To eliminate requirement for external heat source and to prevent reduction of separation rate in an apparatus for producing fresh water or alcohol from sea water or a mixture of alcohol with water by using a black separating membrane and heating the liquid mixture from the membrane surface by the solar light. CONSTITUTION:A liquid mixture is fed to a liquid mixing chamber 12 through a feeding pipe 17 and is heated by a black separating membrane 11 irradiated with solar light. The liquid mixture deprives the latent heat of vaporization from the surface of the membrane 11, permeates the separating membrane 11 and enters a diffusion chamber 14 in the form of vapor. The vapor introduced into the diffusion chamber 14 is diffused and condensed at a cooling wall 13, and the condensate accumulates in a permeate reservoir 18 and is discharged therefrom. When recovery of the latent heat of condensation is intended, a cold liquid mixture is used as a coolant, which is preheated in a cooling chamber 15 by the latent heat of condensation, and supplied to the liquid mixing chamber 12 thereafter.
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