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为实现风能对海水淡化单元的直接驱动,从而提高风能利用率,提出了1种新型的风能超重力真空海水淡化技术,并对该技术的关键设备超重力蒸发室内的流体流动和相变行为进行了研究。提出了超重力真空形成理论,据此得出超重力蒸发室主要结构参数的影响规律:增大转速和半径,减小溢流口压力和高度均有助于超重力真空环境的形成。借助CFD软件建立了无相变VOF模型,利用模拟结果优化了超重力蒸发室的结构;建立了有相变空穴模型,模拟结果表明,增设溢流堰的超重力蒸发室旋转时可生成海水常温蒸发所需的真空环境,适合于常温下风力机械能直接驱动,可减少或避免抽真空负荷和能耗。
In order to realize the direct drive of wind energy to seawater desalination unit and improve the utilization of wind energy, a new type of wind power super-gravity vacuum seawater desalination technology is proposed and the fluid flow and phase transition behavior in the super gravity evaporation chamber of the key equipment of the technology are carried out Study. The theory of formation of super-gravity vacuum is proposed. The main influencing rules of the structure of super-gravity evaporation chamber are obtained. Increasing rotational speed and radius and decreasing the pressure and height of the overflow can contribute to the formation of hypergravity vacuum environment. Phase transition VOF model was established by means of CFD software and the structure of super-gravitational evaporation chamber was optimized by the simulation results. A phase-change hole model was established. The simulation results show that seawater can be generated when the super-gravity evaporation chamber with overflow weir is rotated The vacuum environment required for evaporation at room temperature is suitable for direct driving of wind mechanical energy at room temperature, which can reduce or avoid the vacuum load and energy consumption.