| 摘要 |
<p>PURPOSE:To keep a constant gradation of concentration in non-convection layer by a method wherein light permeable transparent partition films are arranged at two upper and lower locations in the water tank, solution having a high thermal conductivity is applied from just below the upper partition film and another solution having a low thermal conductivity is applied from just above the lower partition film. CONSTITUTION:Light permeable transparent partition films 1 are arranged at the two upper and lower locations so as to form three layers, and the uppermost layer is for fresh water and rain water convection layer 4. In the intermediate layer, fesh water D is applied from just below the upper partition film 1a and solution C of highly concentrated salt etc. is applied from just above the lower partition film 1b, these liquids are mixed with each other to form solution E having a low concentration, the solution E is discharged out at the central part of the intermediate layer so as to make a non-convection layer 2. The lowermost layer is operated as a convection layer 3 for collecting a solar energy, wherein a cold water A is flowed out as a hot water B. Thus, the upper partition film 1a prevents some exterior conditions such as rain or wind etc. from affecting against the non-convection layer 2, so that it always possible to provide a constant or stable gradation of concentration ranging from the lower partition film 1b to the upper partition film 1a, thereby to provide an effective restriction against a radiation of stored solar energy to the convection layer 3.</p> |
