| 摘要 |
Improvement to solar "simple-effect" desalinating devices, as in the attached diagram. It is characterized by a pool 1 made waterproof with black material 2, which contains the sea water. The pool has a covering of a hydrophilic, thermal transparent film 3, of low-density polyethylene, which is held in position by a low-pressure inflation system or with simple structures. The edges of the film are joined to channels 9, for collecting the desalinated water which drains via the pipe 11. The desalinating device has a sea water inlet 4, with automatic constant level system, brine outlet 5 and overflow (spillage) tube 6. With existing polyethylene films it is possible to construct solar desalinating devices of 1000m2 or more, in a single piece, without joins or connections. The pool water is heated by solar energy, evaporates and condenses on the inner face of 3, draining away to the channels 9 which convey it via the pipes 11 to the storage tanks. The desalinated water is replenished with sea water until the salt concentration reaches approximately 25%. Then the brine is emptied from the pool and a new cycle begins. <IMAGE>
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