Review of computational fluid dynamics simulation techniques for direct contact membrane distillation systems containing filament spacers

2019 ◽  
Vol 162 ◽  
pp. 79-96
Author(s):  
Amir Bashirzadeh Tabrizi ◽  
Binxin Wu
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Direct Contact ◽  
Membrane Distillation ◽  
Dynamics Simulation ◽  
Computational Fluid Dynamics Simulation ◽  
Simulation Techniques ◽  
Direct Contact Membrane Distillation

scholarly journals Exergy Analysis of a Direct Contact Membrane Distillation (DCMD) System Based on Computational Fluid Dynamics (CFD)

Membranes ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 525
Author(s):  
Jihyeok Choi ◽  
Yongjun Choi ◽  
Juyoung Lee ◽  
Yusik Kim ◽  
Sangho Lee
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Direct Contact ◽  
Membrane Distillation ◽  
Operating Conditions ◽  
Exergy Destruction ◽  
Cfd Model ◽  
Widespread Application ◽  
Direct Contact Membrane Distillation ◽  
Computational Fluid Dynamics Cfd

Understanding the energy efficiency of direct contact membrane distillation (DCMD) is important for the widespread application and practical implementation of the process. This study analyzed the available energy, known as exergy, in a DCMD system using computational fluid dynamics (CFD). A CFD model was developed to investigate the hydrodynamic and thermal conditions in a DCMD module. After the CFD model was verified, it was used to calculate the temperature polarization coefficient (TPC) and exergy destruction magnitudes under various operating conditions. The results revealed that slight decreases and increases in the TPC occurred with distance from the inlet in the module. The TPC was found to increase as the feed temperature was reduced and the feed and permeate flow rates were increased. The exergy destruction phenomenon was more significant under higher feed temperatures and higher flux conditions. Although the most significant exergy destruction in the permeate occurred near the feed inlet, the effect became less influential closer to the feed outlet. An analysis of exergy flows revealed that the efficiency loss in the permeate side corresponded to 32.9–45.3% of total exergy destruction.

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