Transport Membrane Condenser Heat Exchangers to Break the Water-Energy Nexus-A Critical Review

Under the notion of water-energy nexus, the unsustainable use of water in power plants has been largely accepted in silence. Moreover, the evaporated water from power plants acts as a primary nucleation source of particulate matter (PM), rendering significant air pollution and adverse health issues....

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Bibliographic Details
Published in:	Membranes (Basel) 2020-12, Vol.11 (1), p.12
Main Authors:	Kim, Jeong F, Drioli, Enrico
Format:	Article
Language:	eng
Subjects:	Air pollution carbon capture process Coal-fired power plants Condensers Condensers (liquefiers) Cooling Dehydration Electricity Energy Flue gas flue gas dehydration Fossil fuels Gases Heat Heat exchangers Industrial plant emissions membrane heat exchangers Membranes Nucleation Particulate emissions Particulate matter Permeability power plant water consumption Power plants process intensification Process parameters Review Reviews Smog Technology Technology assessment transport membrane condensers Water pollution Water quality Water temperature
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Summary:	Under the notion of water-energy nexus, the unsustainable use of water in power plants has been largely accepted in silence. Moreover, the evaporated water from power plants acts as a primary nucleation source of particulate matter (PM), rendering significant air pollution and adverse health issues. With the emergence of membrane-based dehydration processes such as vapor permeation membrane, membrane condenser, and transport membrane condenser, it is now possible to capture and recycle the evaporated water. Particularly, the concept of transport membrane condensers (TMCs), also known as membrane heat exchangers, has attracted a lot of attention among the membrane community. A TMC combines the advantages of heat exchangers and membranes, and it offers a unique tool to control the transfer of both mass and energy. In this review, recent progress on TMC technology was critically assessed. The effects of TMC process parameters and membrane properties on the dehydration efficiencies were analyzed. The peculiar concept of capillary condensation and its impact on TMC performance were also discussed. The main conclusion of this review was that TMC technology, although promising, will only be competitive when the recovered water quality is high and/or the recovered energy has some energetic value (water temperature above 50 ∘C).
ISSN:	2077-0375 2077-0375