Abstract
Thermo vapor compressor (TVC) is simply a steam ejector employed in multi-effect desalination (MED) system. A well understanding of flow phenomena inside an ejector is important for improving the ejector performance. To optimize the performance of the ejector used in thermo vapor compressor, a three dimensional model for the computational fluid dynamics (CFD) was conducted. The results due to the CFD were verified with the results data obtained by a new analytical model developed using the equations of continuity, momentum and energy. The present results investigated recent patents of the effect of the condenser, evaporator and boiler pressures and also the effect of ejector geometry on the thermo vapor compressor performance. A comparison between the present CFD and the analytical results at the same operating conditions, gave good agreement between them with an acceptable deviation ranges from -5 to 16 %. Keywords: analytical model, CFD, ejector geometry, multi-effect desalination (MED), steam ejector, thermo vapor compressor, geometrics and grids, condenser, nozzle, desalination system
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