Abstract
A model to predict the progress of a direct contact membrane distillation (DCMD) process is presented.
This model is based on the dusty gas model (DGM), describing the flow inside the membrane pores. The
DGM is incorporated into mass and energy balances over a tubular membrane module. These balances
include corrections for temperature and concentration polarization at the membrane surface estimated
by empirical correlations for mass and heat transfer coefficients. Physical properties of the tube and shell
side solutions and physical properties of the membrane have been estimated based on values and correlations
given in literature. The size of membrane tortuosity has been estimated based on experiments on
pure water feed. Evaluated with experimental data obtained from DCMD experiments on black currant
juice the model was capable of predicting fluxes in DCMD on black currant juice with an average percental
error below 10%.
This model is based on the dusty gas model (DGM), describing the flow inside the membrane pores. The
DGM is incorporated into mass and energy balances over a tubular membrane module. These balances
include corrections for temperature and concentration polarization at the membrane surface estimated
by empirical correlations for mass and heat transfer coefficients. Physical properties of the tube and shell
side solutions and physical properties of the membrane have been estimated based on values and correlations
given in literature. The size of membrane tortuosity has been estimated based on experiments on
pure water feed. Evaluated with experimental data obtained from DCMD experiments on black currant
juice the model was capable of predicting fluxes in DCMD on black currant juice with an average percental
error below 10%.
| Bidragets oversatte titel | En model af direkte kontakt membrandestillation af solbærsaft |
|---|---|
| Originalsprog | Engelsk |
| Tidsskrift | Journal of Food Engineering |
| Vol/bind | 107 |
| Udgave nummer | 2 |
| Sider (fra-til) | 405-414 |
| Antal sider | 10 |
| ISSN | 0260-8774 |
| DOI | |
| Status | Udgivet - 1. dec. 2011 |