Comparing brine-seawater mixing between two-port and four-port rotary energy recovery device

被引：4

作者：

Xu, Enle ^{[1
,2
]}

Jiang, Xiaofeng ^{[1
]}

Miao, Zhenyong ^{[1
]}

Wang, Fenglei ^{[3
]}

机构：

[1] China Univ Min & Technol, Sch Chem Engn & Technol, Xuzhou 221116, Jiangsu, Peoples R China

[2] Qingdao Univ Sci & Technol, Coll Electromech Engn, Qingdao 266061, Shandong, Peoples R China

[3] Qingdao Changlong Power Equipment Co Ltd, Qingdao 266700, Shandong, Peoples R China

来源：

DESALINATION AND WATER TREATMENT | 2020年 / 173卷

基金：

中国国家自然科学基金;

关键词：

Rotary energy recovery device; CFD; Mixing; Inflow length; CORE-HYDRAULIC-SYSTEM; NUMERICAL-SIMULATION; PRESSURE EXCHANGER; REVERSE-OSMOSIS; RO MEMBRANE; SWRO; CONSUMPTION; OPTIMIZATION; BEHAVIOR; DUCTS;

D O I：

10.5004/dwt.2020.24823

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In order to compare the mixing behavior between two-port and four-port rotary energy recovery device (RERD), the effect of operational conditions on mixing of two-port RERD was investigated by CFD simulation. The sliding mesh technique and species transport equations which had been verified by our previous research were used in the simulation process, indicates that the simulation result is reasonable. New method was proposed to calculate the inflow length based on NaCl mass fractions of two rotor ducts in sealed zone. Inflow length of two-port RERD is about twice as long as that of four-port RERD under the same rotor speed and flow rate. Simulation results revealed that two-port RERD exhibits polynomial relation between mixing and dimensionless inflow length, the same trend with four-port RERD. When mixing of two-port or four- port RERD is controlled in level of 6%, dimensionless inflow length must be less than 0.76. Four-port RERD facilitates to keep the mixing in a less level compared with two-port RERD, which is the developing trend for the RERD. The work can give some insights into the mixing difference between two-port RERD and four-port RERD, and guide the design of RERD in a low level mixing.

引用

页码：207 / 212

页数：6