| 摘要 |
<p>Solar distillation apparatus in which a substantial part of the heat of condensation of the condensing liquid is recovered. A conduit (14) having an inclined smooth lower surface (54) is disposed below a lens system (12) and above a container (16) for the liquid to be distilled (e.g. salt water) and on which the evaporated liquid condenses and releases its heat of condensation. A fluid is circulated through the conduit in a heat exchanging relationship with the lower surface thereof, the fluid absorbing a substantial part of the released heat of condensation. The condensed liquid flows along the bottom of the inclined lower surface (54) and is discharged from the lower end (56) thereof and collected. The conduit in the preferred embodiments is flat and transparent and the spacing between the upper and lower walls of the conduit is elected so that only a small part of the solar energy is absorbed in the conduit while the fluid in the conduit recovers a substantial part of the released heat of condensation. Preferably, more fluid is circulated in the conduit means than the quantity of liquid evaporated from the distillation compartments and condensed on the conduit means in order to carry away the released heat of condensation while maintaining the temperature of the fluid below that of the condensing liquid vapor.</p> |
