摘要
针对水资源短缺及能源浪费两大问题,提出一种新型基于朗肯循环驱动进行反渗透海水淡化的复合系统,将蒸发器与增压泵相连,通过蒸汽为增压泵提供动力,从而推动海水进入反渗透膜进行海水淡化,并将排出的浓海水进行能量回收,为增压泵回程提供动力,使复合系统在满足朗肯循环的基础上进行海水淡化。首先建立整个系统的原理图,对增压泵及能量回收装置进行物理模型的建立,然后对整个系统进行热力学分析,以R245fa,R134a,R600,R600a 4种有机工质为例,基于热力学第一定律研究增压泵入口温度和进、出口压力对系统性能的影响。结果表明,整体设计能够正常运行。
In view of the two major problems of water shortage and energy waste,this paper proposes a new composite system for reverse osmosis seawater desalination based on Rankine cycle drive.The evaporator is connected to the booster pump,and the booster pump is powered by steam.Seawater is pressed into the reverse osmosis membrane for desalination.The concentrated seawater after energy recovery provides power for the return stroke of the booster pump.The composite can desalinate seawater on the basis of satisfying the Rankine cycle.Firstly,the entire system schematic is established,and the physical model of the booster pump and energy recovery device is established.Secondly,the thermodynamic analysis of the whole system is carried out.Taking R245fa,R134a,R600 and R600a as examples,based on the first law of thermodynamics,the influence of inlet temperature,inlet and outlet pressure of booster pump on system performance is studied.The results show that the whole design can work normally.
作者
耿冬寒
王松贺
陈睿
GENG Dong-han;WANG Song-he;CHEN Rui(School of Mechanical Engineering,Tianjin Polytechnic University,Tianjin 300387;不详)
出处
《液压与气动》
北大核心
2020年第10期58-63,共6页
Chinese Hydraulics & Pneumatics
基金
天津市教委科研计划(2017KJ080)。
关键词
朗肯循环
气液增压泵
海水淡化
能量回收装置
rankine cycle
gas-liquid booster pump
desalination
energy recovery device
