NUMERICAL STUDY ON DESALINATED WATER FLUX FROM NACL SOLUTION USING HOLLOW FIBER TYPE DCMD MODULE

The direct contact membrane distillation process is used for water desalination. DCMD is a thermally driven separation process, in which only vapor molecules transfer through a microporous hydrophobic membrane. The driving force in the DCMD process is the vapor pressure difference induced by the temperature difference across the hydrophobic membrane. In this study, the one-dimensional based model is developed for predicting the performance of the seawater desalination to produce fresh water for hollow fiber type DCMD module. The mass, energy and momentum balance equations are coupled to determine the concentration of NaCl, the temperature and velocity distribution of the feed and permeate side along the module length, and productivity of fresh water in the DCMD process. The KMPT model is used to calculate the mas