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通过对机械蒸汽压缩(mechanical vapor compression,MVC)-多效蒸馏(multi-effect evaporator,MEE)海水淡化系统建立模型,研究了压缩机输入功率与海水淡化系统运行参数之间的关系,分析了系统中压缩机与多效蒸发器之间相互耦合的匹配关系,探讨了辅助能源加热对系统运行状态及产水率的影响,并通过耦合风力发电机模型,研究了系统淡水产率随风电功率随机变化的响应曲线。结果表明:随压缩机输入功率的增加,多效蒸发器效间的传热温差增大,产水率也近似线性增加;辅助能源虽然有助于提高产水率,但其添加量不能超过一定的上限;对于一组平均为7.1m/s的随机风速,海水淡化系统的平均产水率为5.00t/h,平均产水能耗10.2kWh/t,而若采用20%辅助能源加热,可以使平均产水率提高0.21t/h。
The model of mechanical vapor compression (MVC) - multi-effect evaporator (MEE) desalination system was established. The relationship between compressor input power and operating parameters of desalination system was studied. Medium compressor and multi-effect evaporator, and discussed the effect of auxiliary energy heating on system operation status and water production rate. By coupling wind turbine model, The response curve of change. The results show that as the compressor input power increases, the heat transfer temperature difference between multi-effect evaporators increases, and the water production rate also increases approximately linearly. Although the auxiliary energy can help increase the water production rate, the added amount can not exceed a certain level ; For a group of average wind speed of 7.1m / s, the average water yield of the desalination system is 5.00t / h and the average energy consumption of water production is 10.2kWh / t. If 20% auxiliary energy heating is used, The average water yield increased 0.21t / h.