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Início Arquivos Representantes Futuras reuniões American Society of Thermal and Fluids Engineering

STUDY OF THERMAL AND MASS TRANSFER CHARACTERISTICS ON AIR GAP DIFFUSED DESALINATION

Ping Wang
Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, China

Bingchen Yu
Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, China

Lele Chen
Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, China

Shiming Xu
Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, China

Lin Xu
Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, China

Shuping Zhang
Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, China

Lei Li
Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, China

DOI: 10.1615/TFEC2020.ewf.032269
pages 221-234

Resumo

In this paper, the diffusion-gap seawater desalination is modeled and analyzed. A mathematical model is established by the conservation of mass and energy. The CFD software is adopted to realize the two-dimensional simulation of water vapor in the air gap. The water evaporate on the evaporator and the vapor diffusion through the air gap, condense on the condenser. The appropriate simplification and user-defined functions were used to assist the study. A steady-state numerical simulation of the water vapor diffusion process in the air gap is carried out and the model height is 0.5 m, air gap width is 5 mm and the flow rate is 0.005 kg/s; by the distribution of temperature, pressure, water vapor concentration in the air gap, it is conducive to know the microscopic flow within the air gap.

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