Direct Study Of The Trend Can Drive Desalination Systems

Ocean energy will be one of the important part in the twenty-first Centuryenergy consumption structure, which is a very promising green energy industry.However, the current trend is mainly used for power generation, rarely used forseawater desalination. Reverse osmosis seawater desalination equipmentis driven mostly by the electricity, but electricity and fresh water are extremelydeficient in the island far away from the mainland. How to desalinatedirect-driven taking advantage of the rich marine energy surrounded the island isan urgent problem to solve.This paper proposes a method that seawater desalination convertedlow-pressure seawater into high pressure of seawater, through a low sea waterpump driven by trend energy harvesting systems and concentrate seawaterdesalination processes for energy recovery. Improving the conversionefficiency and pressure entering stability the seawater desalination system is thekey to tidal current energy seawater desalination. Power flow method ofseawater desalination system adopts hydraulic direct drive, energyrecovery system and optimal tracking control method improves the tidal currentenergy conversion efficiency, and the high, low pressure accumulator and stablepressure control mode has a stabilizing effect on the pressure in the processof seawater desalination.Based on the theory of fluid mechanics on the characteristics of tidalcurrent energy variable, and sets up a mathematical model of tidal current energydirect drive type seawater desalination of each subsystem, and finally deducesthe trend can direct drive discrete mathematical model of seawater desalinationsystem. The mathematical model considers the sliding friction and leakage ofwater in hydraulic system components. In different system parameters, control,through the optimum torque constant pressure control and energy recoverysystem control mode can be mathematical model of seawater desalination systemsimulation in the system pressure, water yield and water consumption and otheraspects of the current ratio. The simulation results show that the pressure of the system is stable, water production ratio of energy consumption. At the sametime, the seawater desalination prototype principle, parameter determination,design and manufacturing process, and the sea trial.