Temperature polarization coefficients in membrane distillation
- Univ. de Malaga (Spain)
Membrane distillation is a membrane process in which two liquid phases at different temperatures are separated by a microporous hydrophobic membrane. The membrane plays the role of a physical support for the vapor-liquid interface. The aim of this paper is to study pure water transport by membrane distillation through a PTFE flat membrane. The dependence of the phenomenon on average temperature and recirculation rate at the membrane sides is investigated. The influence of these operating conditions on water transport is discussed by taking into account mass and heat transfer within the membrane and the adjoining liquid phases. The concept of temperature polarization is introduced into the transport equations and shown to be important in the interpretation of the experimental results.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 634686
- Journal Information:
- Separation Science and Technology, Journal Name: Separation Science and Technology Journal Issue: 6 Vol. 33; ISSN 0149-6395; ISSN SSTEDS
- Country of Publication:
- United States
- Language:
- English
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