Single and dual stage closed-loop pressure retarded osmosis for power generation: Feasibility and performance

被引:39
作者
Altaee, Ali [1 ]
Palenzuela, Patricia [2 ]
Zaragoza, Guillermo [2 ]
AlAnezi, Adnan Alhathal [3 ]
机构
[1] Univ Technol Sydney, Sch Civil & Environm Engn, Sydney, NSW 2007, Australia
[2] CIEMAT, Plataforma Solar Almeria, Ctra Senes S-N, Tabernas 04200, Almeria, Spain
[3] Publ Author Appl Educ & Training, Coll Technol Studies, Dept Chem Engn Technol, POB 117, Sabah Alsalem 44010, Kuwait
关键词
Pressure retarded osmosis; Dual stage pressure retarded osmosis; Osmotic power plant; Thermal regeneration; Dual stage PRO optimization; STEADY-STATE MODEL; ENERGY GENERATION; SALINITY-GRADIENT; CONCENTRATION POLARIZATION; REVERSE ELECTRODIALYSIS; PRO PROCESS; DESALINATION; PLANT; WATER; IMPACT;
D O I
10.1016/j.apenergy.2017.01.073
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
This work proposes an analysis of conventional (single stage) and dual stage Closed-Loop Pressure Retarded Osmosis (CLPRO) for power generation from a salinity gradient resource. Model calculations were performed taking into account the influence of operating parameters such as the draw solution concentration, membrane area, and draw solution pressure on the performance of the CLPRO process. Modeling results showed that the dual stage CLPRO process outperformed the conventional CLPRO process and power generation increased 18% by adding a second stage of PRO membrane. Multi-Effect Distillation (MED) was selected for the regeneration of the draw solution taking advantage of an available source of waste heat energy. The performance of MED process has been assessed by investigating two key parameters: the specific thermal consumption and the specific heat transfer area. The model calculations showed that the power generation by the single and dual stage CLPRO was higher than the electrical power consumption by the MED plant. In the case of the power generation obtained by the dual stage CLPRO, it was 95% higher than the electrical power consumption by the MED plant, proving the possibility of using low-grade heat for producing electricity from a salinity gradient resource. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码:328 / 345
页数:18
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