| 摘要 |
The present invention relates to a power generating system capable of recovering salinity gradient energy utilizing automatic self-reciprocating pressure exchange. The power generating system includes a fresh water supply unit supplying fresh water; a salt water supply unit supplying salt water; an osmotic unit having a low-concentration region connected to the fresh water supply unit and a high-concentration region connected to the salt water supply unit, with the regions being divided by a membrane; and a pressure exchange unit having at least two cylinders formed with a main inlet port and a main outlet port, a piston positioned in each cylinder, a piston rod connecting the piston, and an auxiliary piston reciprocating in the cylinder to selectively open or close the main inlet or outlet port. The salt water of the high-concentration region transmitted by the pressure generated from the osmotic unit flows in any one of the cylinders of the pressure exchange unit, and thus the piston rod reciprocates to recovery the pressure generated from the osmotic unit. Therefore, since a valve driving unit required for the continuous drive of the pressure delay osmotic system of the related art is directly applied to the reciprocating pressure exchange apparatus, a part of the energy can be reused, without consuming the energy, and the rest can be mechanically recovered. |
