Results 201 to 210 of about 2,563 (255)
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Preparation and characterization of PES and PSU membrane humidifiers
Journal of Membrane Science, 2011Abstract Polysulfone (PSU) and polyethersulfone (PES) porous membranes; and mixed polymer with nanoparticles TiO 2 , were prepared for air humidification. The mechanical properties and morphology of these membranes were studied by Tensile tester and SEM/EDX.
Armin Samimi +6 more
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Characterization of Ultramicroporous Carbon Membranes with Humidified Feeds
Industrial & Engineering Chemistry Research, 1995Carbon molecular sieving membranes offer many advantages for difficult gas separations. The selectivities achieved with these membranes are much higher than those typically found with polymeric materials, without sacrificing productivity. While they perform very well with high-purity, dry feeds, the work in this paper will show that they are vulnerable
Cheryl W. Jones, William J. Koros
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Journal of Fuel Cell Science and Technology, 2008
The performance of membrane humidifier (MH) and enthalpy wheel humidifier (EWH) for a large power proton exchange membrane fuel cell (PEMFC) system is compared using simulations and experiments. The MH model is based on one dimensional diffusion equation and the EWH model is based on the porous media surface diffusion equation. Simulation results agree
Lao Xingsheng +5 more
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The performance of membrane humidifier (MH) and enthalpy wheel humidifier (EWH) for a large power proton exchange membrane fuel cell (PEMFC) system is compared using simulations and experiments. The MH model is based on one dimensional diffusion equation and the EWH model is based on the porous media surface diffusion equation. Simulation results agree
Lao Xingsheng +5 more
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Renewable Energy, 2021
Abstract Humidifiers are used to control humidity of the air flowing into the cathode of a proton exchange membrane fuel cell to handle flooding and dehydration phenomena. In this study, a membrane module was tested in a humidifier designed with isothermal condition.
Xuan Linh Nguyen +2 more
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Abstract Humidifiers are used to control humidity of the air flowing into the cathode of a proton exchange membrane fuel cell to handle flooding and dehydration phenomena. In this study, a membrane module was tested in a humidifier designed with isothermal condition.
Xuan Linh Nguyen +2 more
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Development of a new membrane-type heated humidifier for laparoscopic surgery
Surgical Endoscopy, 2003Recently, several animal studies showed that the core body temperature falls during pneumoperitoneum, and this hypothermia could be prevented by using heated and humidified gas insufflation. However, there are no satisfactory heated humidifiers to meet this purpose.
M, Matsuda +6 more
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Analytical model of a membrane humidifier for polymer electrolyte membrane fuel cell systems
International Journal of Heat and Mass Transfer, 2013Abstract An analytical model for a membrane humidifier is developed for counter-current flow configuration at steady-state, which is applicable to plate-and-frame as well as shell-and-tube humidifiers. For the first time, the dependence of mass transfer on heat transfer is incorporated in the analytical model and analytical expressions are obtained ...
Mayank Sabharwal, Divesh Bhatia
exaly +2 more sources
International Journal of Heat and Mass Transfer, 2019
Abstract The research and development of humidifiers is important to proton exchange membrane fuel cell systems. The water exchange membrane is a key component to the planar membrane humidifier. In this work, two types of low-cost membrane, the pervaperation (PV) membrane and the reverse osmosis (RO) membrane, are selected as the research targets ...
Chen-Yu Chen +4 more
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Abstract The research and development of humidifiers is important to proton exchange membrane fuel cell systems. The water exchange membrane is a key component to the planar membrane humidifier. In this work, two types of low-cost membrane, the pervaperation (PV) membrane and the reverse osmosis (RO) membrane, are selected as the research targets ...
Chen-Yu Chen +4 more
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Effectiveness correlations for heat and mass transfer in membrane humidifiers
International Journal of Heat and Mass Transfer, 2009zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Kadylak, David +2 more
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An analytic model of membrane humidifier for proton exchange membrane fuel cell
2014An essential requirement for an operating PEM fuel cell is providing proper water content in the membrane. To avoid water flooding an appropriate water balance is required. Here, an analytic model of a planar membrane humidifier for PEM fuel cell is proposed where the effect of dimensional parameters includes membrane thickness, membrane area and ...
Afshari, Ebrahim +1 more
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Proton Exchange Membrane Fuel Cell with Humidifying Zone
Chinese Journal of Chemical Engineering, 2010Water management is of great importance to maintain performance and durability of proton exchange membrane fuel cells. This paper presents a novel proton exchange membrane (PEM) fuel cell with a humidification zone in the membrane electrode assembly (MEA) of each cell, in which the moisture of the cathode exhaust gas could transfer through the membrane
Weizhong LÜ +4 more
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