| 摘要 |
<p>In a distillation process for purifying a liquid (e.g. seawater) stored in a reservoir, the liquid is heated by solar energy and evaporated in an evaporator, the resultant vapour is condensed and the unevaporated liquid is returned from the evaporator to the reservoir. In one embodiment, seawater which has been heated by solar energy is transferred from lagoon 10 to a vacuum boiler 30, steam being delivered through a turbine 54 to a condenser 22. The turbine generates the power necessary for the running of the apparatus. Pure water is collected from the condenser and the seawater remaining in the boiler is returned to the lagoon through pipe 38 and flexible tubes (not shown) arranged on a terraced support 12 sloping down to the lagoon, the tubes defining a collector for solar energy. The salinity balance in the seawater returned from the boiler is maintained continuously by a flow circuit so arranged as to require no additional power consumption. <IMAGE></p> |
