Dynamic modeling and experimental validation for direct contact membrane distillation (DCMD) process

Fadi Eleiwi, Noreddine Ghaffour, Ahmad S. Alsaadi, Lijo Francis, Taous Meriem Laleg-Kirati

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

This work proposes a mathematical dynamic model for the direct contact membrane distillation (DCMD) process. The model is based on a 2D Advection-Diffusion Equation (ADE), which describes the heat and mass transfer mechanisms that take place inside the DCMD module. The model studies the behavior of the process in the time varying and the steady state phases, contributing to understanding the process performance, especially when it is driven by intermittent energy supply, such as the solar energy. The model is experimentally validated in the steady state phase, where the permeate flux is measured for different feed inlet temperatures and the maximum absolute error recorded is 2.78 °C. Moreover, experimental validation includes the time variation phase, where the feed inlet temperature ranges from 30 °C to 75 °C with 0.1 °C increment every 2min. The validation marks relative error to be less than 5%, which leads to a strong correlation between the model predictions and the experiments.

Original languageEnglish
Pages (from-to)1-11
Number of pages11
JournalDesalination
Volume384
DOIs
Publication statusPublished - 15 Apr 2016

Keywords

  • 2D Advection-Diffusion Equation (ADE) model
  • Direct contact membrane distillation (DCMD)
  • Discretization
  • Dynamic modeling
  • Intermittent energy supply

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)
  • Water Science and Technology
  • Mechanical Engineering

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