Gas Separations: Fundamentals and Applications

A special issue of Membranes (ISSN 2077-0375). This special issue belongs to the section "Membrane Applications".

Deadline for manuscript submissions: closed (30 June 2022) | Viewed by 4359

Special Issue Editor


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Guest Editor
Mechanical Engineering, College of Engineering and Computing, University of South Carolina, Columbia, SC 29208, USA
Interests: solid oxide fuel cells; solid oxide electrolysis cells; gas separation membranes; materials for electrochemical energy conversion and storage; reliability and durability of functional and structural materials; transport phenomena and electrochemical kinetics
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Special Issue Information

Dear Colleagues,

The recovery and generation of valuable productions through the separation process have been playing a very important role in industry. With the increasing demand for clean energy and concerns of climate change as well as sustainability, re/innovation of separation technologies are needed. In this Special Issue, research papers of separation science and technologies are solicited, such as separation membranes and other separation process. The research topics may include, but not limited to, the followings:

  • Materials and fabrications of separation membranes;
  • Separation process modeling and fundamental mechanism understanding;
  • Gas separation for O2, H2, CO2, etc.;
  • Fuel reforming;
  • Oxycombustion;
  • Desalination process;
  • Recycling and recovering of elements and materials;
  • Up-scaling and integration of separation systems;
  • Novel separation process;
  • Others.

The papers can be research papers and reviews.

Dr. Xingjian (Chris) Xue
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Membranes is an international peer-reviewed open access monthly journal published by MDPI.

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Published Papers (1 paper)

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Research

17 pages, 3098 KiB  
Article
Combined Membrane Dehumidification with Heat Exchangers Optimized Using CFD for High Efficiency HVAC Systems
by Ajay Sekar Chandrasekaran, Andrew J. Fix and David M. Warsinger
Membranes 2022, 12(4), 348; https://doi.org/10.3390/membranes12040348 - 22 Mar 2022
Cited by 6 | Viewed by 3993
Abstract
Traditional air conditioning systems use a significant amount of energy on dehumidification by condensing water vapor out from the air. Membrane-based air conditioning systems help overcome this problem by avoiding condensation and treating the sensible and latent loads separately, using membranes that allow [...] Read more.
Traditional air conditioning systems use a significant amount of energy on dehumidification by condensing water vapor out from the air. Membrane-based air conditioning systems help overcome this problem by avoiding condensation and treating the sensible and latent loads separately, using membranes that allow water vapor transport, but not air (nitrogen and oxygen). In this work, a computational fluid dynamics (CFD) model has been developed to predict the heat and mass transfer and concentration polarization performance of a novel active membrane-based energy exchanger (AMX). The novel design is the first of its kind to integrate both vapor removal via membranes and air cooling into one device. The heat transfer results from the CFD simulations are compared with common empirical correlations for similar geometries. The performance of the AMX is studied over a broad range of operating conditions using the compared CFD model. The results show that strong tradeoffs result in optimal values for the channel length (0.6–0.8 m) and the ratio of coil diameter to channel height (~0.5). Water vapor transport is best if the flow is just past the turbulence transition around 3000–5000 Reynolds number. These trends hold over a range of conditions and dimensions. Full article
(This article belongs to the Special Issue Gas Separations: Fundamentals and Applications)
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