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Journal articles on the topic 'Membrane compressor'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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1

Scheepers, Fabian, Markus Stähler, Andrea Stähler, et al. "Improving the Efficiency of PEM Electrolyzers through Membrane-Specific Pressure Optimization." Energies 13, no. 3 (2020): 612. http://dx.doi.org/10.3390/en13030612.

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Hydrogen produced in a polymer electrolyte membrane (PEM) electrolyzer must be stored under high pressure. It is discussed whether the gas should be compressed in subsequent gas compressors or by the electrolyzer. While gas compressor stages can be reduced in the case of electrochemical compression, safety problems arise for thin membranes due to the undesired permeation of hydrogen across the membrane to the oxygen side, forming an explosive gas. In this study, a PEM system is modeled to evaluate the membrane-specific total system efficiency. The optimum efficiency is given depending on the e

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2

Zängler, Wibke, Robert Keller, and Matthias Wessling. "Production of Novel Tubular Electrochemical Hydrogen Compressor." ECS Meeting Abstracts MA2023-02, no. 38 (2023): 1850. http://dx.doi.org/10.1149/ma2023-02381850mtgabs.

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For most applications, especially transport, hydrogen needs to be compressed due to its low volumetric density. Conventionally, mechanical compressors are used for hydrogen compression, but they possess disadvantages such as high maintenance due to moving parts and a limited one-stage compression ratio. A promising technology to overcome those obstacles is electrochemical hydrogen compression, in which hydrogen is compressed in an electrochemical membrane reactor. To date, only planar electrochemical reactors for hydrogen compression have been investigated although tubular designs offer advant

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Kee, Benjamin L., David Curran, Huayang Zhu, et al. "Thermodynamic Insights for Electrochemical Hydrogen Compression with Proton-Conducting Membranes." Membranes 9, no. 7 (2019): 77. http://dx.doi.org/10.3390/membranes9070077.

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Membrane electrode assemblies (MEA) based on proton-conducting electrolyte membranes offer opportunities for the electrochemical compression of hydrogen. Mechanical hydrogen compression, which is more-mature technology, can suffer from low reliability, noise, and maintenance costs. Proton-conducting electrolyte membranes may be polymers (e.g., Nafion) or protonic-ceramics (e.g., yttrium-doped barium zirconates). Using a thermodynamics-based analysis, the paper explores technology implications for these two membrane types. The operating temperature has a dominant influence on the technology, wi

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Gong, Myungkeun, Changhyun Jin, and Youngseung Na. "Minimizing Area-Specific Resistance of Electrochemical Hydrogen Compressor under Various Operating Conditions Using Unsteady 3D Single-Channel Model." Membranes 13, no. 6 (2023): 555. http://dx.doi.org/10.3390/membranes13060555.

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Extensive research has been conducted over the past few decades on carbon-free hydrogen energy. Hydrogen, being an abundant energy source, requires high-pressure compression for storage and transportation due to its low volumetric density. Mechanical and electrochemical compression are two common methods used to compress hydrogen under high pressure. Mechanical compressors can potentially cause contamination due to the lubricating oil when compressing hydrogen, whereas electrochemical hydrogen compressors (EHCs) can produce high-purity, high-pressure hydrogen without any moving parts. A study

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5

Huh, Sun Chul, Han Shik Chung, Hyo Min Jeong, and Byeong Keun Choi. "ASME Code Evaluation on Stress Analysis of Snubber." Key Engineering Materials 326-328 (December 2006): 1339–42. http://dx.doi.org/10.4028/www.scientific.net/kem.326-328.1339.

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Small snubber of hydrogen compressor do duty as buffer pulsation of compressed hydrogen. Snubber is a kind of internal pressure vessel and design optimum of snubber very important problem. In this paper, we will estimation results of elastic finite element structural analysis using the commercial program such as ANSYS for comparison to the limits in ASME Code Sec. Ⅷ that are related to membrane and bending stresses. In case of membrane stress in a circular cylindrical due to internal pressure or to distributed live loads. Bending stress in the central portion of flat head due to pressure. In a

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6

Jeхenov M.K.,, Ismagilov F.R.,, Akhmetov S.M.,, Diarov M., та Bektay Y.K.,. "UTILIZATION OF HYDROGEN SULFIDE-CONTAINING REFINERY FLARE GASЕS". SERIES CHEMISTRY AND TECHNOLOGY 5, № 443 (2020): 64–70. http://dx.doi.org/10.32014/2020.2518-1491.81.

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Modern oil refinery flare does not provide the beneficial use of discharged hydrocarbon gases and vapors, which does not allow to reduce the volume of hydrocarbon gas burned in flare candles and reduce atmospheric pollution. To ensure a stable and trouble-free operation of the flare plant and to increase the efficiency of waste gas utilization, their preliminary compression using mechanical or jet compressors and the construction of gas treatment plants are required. A low-cost method of utilizing hydrogen sulfide-containing refinery gas is proposed, including two-stage gas compression by a li

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7

Sun, Jian, Bin Peng, and Bingguo Zhu. "Performance Analysis and Test Research of PEMFC Oil-Free Positive Displacement Compressor for Vehicle." Energies 14, no. 21 (2021): 7329. http://dx.doi.org/10.3390/en14217329.

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In order to study the matching characteristics of the positive displacement air compressor and the PEMFC (proton exchange membrane fuel cells), air supply subsystem, the basic operating performance parameters of the scroll and single-screw air compressors were analyzed with the focus on the oil-free double-wrap scroll compressor. According to the thermodynamic model and three-dimensional unsteady-state numerical simulation, the variation of the temperature, pressure, and velocity was obtained. Besides, under the rated operating condition of the compressor, the inlet and outlet mass flow rate o

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8

Klütsch, Johannes, and Stefan Pischinger. "Systematic Design of Cathode Air Supply Systems for PEM Fuel Cells." Energies 17, no. 14 (2024): 3534. http://dx.doi.org/10.3390/en17143534.

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To increase system efficiency and power density, the cathode air path of Polymer Electrolyte Membrane Fuel Cells (PEM FCs) is supercharged using electrically driven air bearing centrifugal compressors. To maximize system efficiency, the cathode air supply system must be designed to optimally fulfill the requirements of the PEM FC system while obeying the design constraints imposed by the electric compressor drive and the air bearing system. This article proposes a dedicated design process for PEM FC cathode air compressors. Using physically based component models, the impact of varying cathode

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9

Kim, Changhyun, Myungkeun Gong, Jaewon Lee, and Youngseung Na. "Minimizing Specific Energy Consumption of Electrochemical Hydrogen Compressor at Various Operating Conditions Using Pseudo-2D Model Simulation." Membranes 12, no. 12 (2022): 1214. http://dx.doi.org/10.3390/membranes12121214.

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With the increased usage of hydrocarbon-based fossil fuels, air pollution and global warming have accelerated. To solve this problem, renewable energy, such as hydrogen technology, has gained global attention. Hydrogen has a low volumetric density and thus requires compression technologies at high pressures to reduce storage and transportation costs. Techniques for compressing hydrogen include using mechanical and electrochemical hydrogen compressors. Mechanical compressors require higher specific energy consumption than electrochemical hydrogen compressors. Here, we used an electrochemical hy

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10

Liu, Mingkun, Chuang Wang, Yanpeng Li, Yuchen Li, Lixin Liu, and Ziwen Xing. "Experimental Investigation on the Effect of Water Cooling on a Dry Twin-Screw Air Compressor for Proton Exchange Membrane Fuel Cells." Applied Sciences 14, no. 6 (2024): 2537. http://dx.doi.org/10.3390/app14062537.

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Due to the lack of oil injection cooling, it is usually necessary for dry twin-screw compressors to design cooling jackets to carry away the heat generated during operation. In order to investigate to what extent a cooling jacket can improve the performance of screw compressors, this study set up an experimental platform for a dry twin-screw compressor applied in fuel cell vehicles and used water as the working liquid in the cooling jacket. Then, the performance parameters of the screw compressor under different rotating speeds, discharge pressures, and cooling water flow rates were measured.

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11

Riffat, James, Cagri Kutlu, Emmanuel Tapia-Brito, Yuehong Su, and Saffa Riffat. "A preliminary experimental study of a novel incorporation of chilled ceiling with phase change materials and transparent membrane cover." International Journal of Low-Carbon Technologies 17 (2022): 258–65. http://dx.doi.org/10.1093/ijlct/ctab104.

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Abstract This study presents an experimental investigation into a novel incorporation of chilled ceiling with transparent membrane cover and phase-change material (PCM) to form a new type of PCM chilled ceiling panel. The membrane cover is infrared transparent to facilitate radiant cooling, but serves as a barrier of convection to avoid moisture condensation for applications in humid climate regions. As reliable electricity supply is still not accessible to millions of people, especially in sub-Saharan and South Asian countries where these countries also face the combined problems of high cool

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12

Meshcheryakova, Yulia, Alexander Meshcheryakov, Igor Busin, Alexey Kornev, and Stanislav Nagornov. "MEMBRANE PURIFICATION OF WATERED FUEL." SCIENCE IN THE CENTRAL RUSSIA, no. 5 (October 31, 2024): 129–38. http://dx.doi.org/10.35887/2305-2538-2024-5-129-138.

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A promising way to solve the problem of waterlogging of motor fuel may be the use of modern filter materials. Membrane filters are widely used in various technological processes. They are capable of working for a long time, are quite durable and chemically resistant. The possibility of using membrane materials in the purification of artificially watered diesel fuel has been investigated. For the analysis of membranes, an installation has been designed that allows fuel to be pumped through the test material at different pressures. The pressure is created without using a pump, but due to compres

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13

Jin, Jianjiao, Jianfeng Pan, Zhigang Lu, Qingrui Wu, and Lizhong Xu. "An investigation of a high-performance centrifugal compressor with a variable map width enhancement slot for proton exchange membrane fuel cell systems in commercial vehicle application." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 235, no. 1 (2020): 288–300. http://dx.doi.org/10.1177/0954407020937149.

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Maintaining required performance and rated power output of proton exchange membrane fuel cells while reducing fuel consumption demands and improving efficiencies at the largest parasitic work loss contributor, namely the air compressor. In this paper, we built a high-efficiency one-dimensional match model of centrifugal compressor for proton exchange membrane fuel cells first, which was based on the fuel cell air supply system and the optimal trim factor. And then a variable map width enhancement slot design adjusted by a closed ring was first introduced to extend the surge margin and keep hig

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14

Jeong, Ha Yeon, Sol Ah Jeon, Hyo Nam Jeong, Sun Ho Go, Min Sang Lee, and Hong Gun Kim. "Moisture Elimination of the Wet Hydrogen Gas Using the Electrochemical Hydrogen Compressor with a Modified MEA Composition." Key Engineering Materials 737 (June 2017): 354–59. http://dx.doi.org/10.4028/www.scientific.net/kem.737.354.

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The electrochemical hydrogen compressor (EHC) is used as a moisture elimination tool for the wet hydrogen gas. As the pressure of cathode compartment increases, the moisture contents of hydrogen decrease, however, the electrochemical performance of the compression cell is deteriorated. In the high enough pressure difference conditions between anode and cathode the electrochemical performance loss results mainly from the dehydration of the proton exchange membrane. In this article the MEA (membrane electrodes assembly) is modified to keep the water molecules not only in the membrane but also in

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15

Caponetto, Riccardo, Emanuela Privitera, Giuseppe Mirone, and Fabio Matera. "Structural Analysis of Electrochemical Hydrogen Compressor End-Plates for High-Pressure Applications." Energies 15, no. 16 (2022): 5823. http://dx.doi.org/10.3390/en15165823.

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Transportation and portable applications already use hydrogen as fuel, but it is essential to use highly-efficient hydrogen storage methods to increase its usage in the future. The compressed form is the most utilized for transportation applications, but mechanical compressors have low efficiency when compressing low quantities of gas to high pressure. The most suitable device for hydrogen compression is the Electrochemical Hydrogen Compressor (EHC). It has the same structure as a Proton Exchange Membrane Fuel Cell (PEM-FC), but it works at very high-pressure ( 700 bar). The present work analy

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16

Agrawal, Rakesh, and Jianguo Xu. "Gas separation membrane cascades II. Two-compressor cascades." Journal of Membrane Science 112, no. 2 (1996): 129–46. http://dx.doi.org/10.1016/0376-7388(95)00273-1.

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17

Movahedian, Abolfazl, Gianluca Marinaro, and Emma Frosina. "A Fast-Time MATLAB Model of an Aeronautical Low-Temperature PEM Fuel Cell for Sustainable Propulsion and Compressor Behavior at Varying Altitudes." Sustainability 17, no. 13 (2025): 5817. https://doi.org/10.3390/su17135817.

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The aviation sector significantly contributes to environmental challenges, including global warming and greenhouse gas emissions, due to its reliance on fossil fuels. Fuel cells present a viable alternative to conventional propulsion systems. In the context of light aircraft applications, proton exchange membrane fuel cells (PEMFCs) have recently attracted growing interest as a substitute for internal combustion engines (ICEs). However, their performance is highly sensitive to altitude variations, primarily due to limitations in compressor efficiency and instability in cathode pressure. To add

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18

Hou, Wenlong, Jiahan Bao, and Huaixu Chen. "Research on membrane stress of diaphragm compressors based on bidirectional fluid-structure interaction." Journal of Physics: Conference Series 2951, no. 1 (2025): 012039. https://doi.org/10.1088/1742-6596/2951/1/012039.

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Abstract Currently, in the analysis of the stress distribution on the diaphragm of a diaphragm compressor, a static analysis method is employed, assuming that the pressure on the diaphragm is uniformly distributed, which does not reflect reality. To investigate the impact of pressure distribution on diaphragm stress, a bidirectional fluid-structure interaction method is used, combined with User-Defined Functions (UDF) and dynamic mesh techniques. This method establishes a simulation model that fully simulates the compression, discharge, expansion, and suction phases of the diaphragm compressor

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19

Yusha, V. L., S. S. Busarov, and G. I. Chernov. "Theoretical Assessment of the Impact of Cooling and Recovery Systems on Energy Efficiency of Compressor Units Based on Long Stroke Piston Stages." Proceedings of Higher Educational Institutions. Маchine Building, no. 02 (719) (February 2020): 35–44. http://dx.doi.org/10.18698/0536-1044-2020-2-35-44.

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At present, piston and membrane compressor units in the range of medium and high pressure (3.0–10.0 MPa and more) and low productivity (0.001–0.03 m3/s) retain their competitiveness. Their technical characteristics can be improved in many ways, for example, by using long stroke stages. In one such stage, the gas pressure can be increased from 0.1 to 3.0–11.0 MPa without exceeding temperature limits. One of the research directions of such stages is to determine the most efficient thermal mode of operation of the stage. A ‘quasi-isothermal’ working process of compression with intensive external

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20

Boettner, Daisie D., Gino Paganelli, Yann G. Guezennec, Giorgio Rizzoni, and Michael J. Moran. "Proton Exchange Membrane Fuel Cell System Model for Automotive Vehicle Simulation and Control." Journal of Energy Resources Technology 124, no. 1 (2002): 20–27. http://dx.doi.org/10.1115/1.1447927.

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This paper describes a proton exchange membrane (PEM) fuel cell system model for automotive applications that includes an air compressor, cooling system, and other auxiliaries. The fuel cell system model has been integrated into a vehicle performance simulator that determines fuel economy and allows consideration of control strategies. Significant fuel cell system efficiency improvements may be possible through control of the air compressor and other auxiliaries. Fuel cell system efficiency results are presented for two limiting air compressor cases: ideal control and no control. Extension of

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21

Razali, M. A., M. F. Zulkafli, N. Mat Isa, and Z. Subari. "Numerical analysis on centrifugal compressor with membrane type dryer." IOP Conference Series: Materials Science and Engineering 243 (September 2017): 012017. http://dx.doi.org/10.1088/1757-899x/243/1/012017.

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22

Malekbala, Mohammad, Azadboni Khodadadi, and Pejman Kazempoor. "Modeling and control of a proton exchange membrane fuel cell with the air compressor according to requested electrical current." Thermal Science 19, no. 6 (2015): 2065–78. http://dx.doi.org/10.2298/tsci130526071m.

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The aim of this paper is to design and investigate the dynamic behavior of a PEM fuel cell system. Dynamic analysis of a PEM fuel cell system has been done in Matlab\Simulink software according to electrical current that has been applied from hybrid system. In addition, dynamical fuel cell system has been explained according to oriented control that is started from air injection compressor model. Also hydrogen valve actuator has been controlled according to the compressor model. The results of the fuel cell dynamic model as well as the applied compressor model are fully validated based on the

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23

Feng, Ming, and Tian Ming Ren. "Application of Water-Lubricated Bearings in Motorized Centrifugal Air Compressor for Fuel Cell Automotives." Applied Mechanics and Materials 670-671 (October 2014): 920–23. http://dx.doi.org/10.4028/www.scientific.net/amm.670-671.920.

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Proton exchange membrane (PEM) fuel cells intended for new energy automotives require a high efficiency and reliability motorized compressor to supply pressurized air. This paper presents a study and development of a motorized centrifugal air compressor using water-lubricated bearings. Comparing the performance of water-lubricated bearing with gas-lubricated bearing, we found that under the same power consumption the load capacity of water-lubricated bearings are more suitable for high speed motorized compressor system. A prototype was built and tested to verify the possibility of the develope

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24

Borisov, Galin, Nevelin Borisov, and Evelina Slavcheva. "Electrochemical Hydrogen Pump/Compressor in Single- and Double-Stage Regime." Hydrogen 6, no. 1 (2025): 14. https://doi.org/10.3390/hydrogen6010014.

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This study presents the integration and evaluation of commercially available gas diffusion electrodes (GDEs), specifically designed for high-temperature polymer electrolyte membrane fuel cells (HT-PEMFCs) within membrane electrode assemblies (MEA) for electrochemical hydrogen pump/compressor applications (EHP/C). Using Nafion 117 as a solid polymer electrolyte, the MEAs were analyzed for cell efficiency, hydrogen evolution, and hydrogen oxidation reactions (HER and HOR) under differential pressure up to 16 bar and a temperature ranging from 20 °C to 60 °C. Key properties of the GDEs, such as e

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Alabid, Maytham, Calin-Cristian Cormos, and Cristian Dinca. "Critical Assessment of Membrane Technology Integration in a Coal-Fired Power Plant." Membranes 12, no. 9 (2022): 904. http://dx.doi.org/10.3390/membranes12090904.

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Despite the many technologies for CO2 capture (e.g., chemical or physical absorption or adsorption), researchers are looking to develop other technologies that can reduce CAPEX and OPEX costs as well as the energy requirements associated with their integration into thermal power plants. The aim of this paper was to analyze the technical and economic integration of spiral wound membranes in a coal-fired power plant with an installed capacity of 330 MW (the case of the Rovinari power plant—in Romania). The study modeled energy processes using CHEMCAD version 8.1 software and polymer membranes de

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26

Solovev, M., A. Leonhardt, A. Graf, A. Kunke, and V. Kräusel. "Development of geometry variants and forming technology for metal diaphragms to increase the efficiency of diaphragm compressor." IOP Conference Series: Materials Science and Engineering 1284, no. 1 (2023): 012009. http://dx.doi.org/10.1088/1757-899x/1284/1/012009.

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Abstract This article outlines the development of an elastically foldable, bistable diaphragm geometry that enables an increase in the compression volume of diaphragm compressors compared to the use of flat diaphragms. Using a Finite Element Model (FEM) in ABAQUS/Standard, several membrane geometries (truncated cone, cone, and dome) were calculated and analyzed with regard to their elastic deformation. Selected geometries were produced using Single Point Incremental Forming (SPIF) and tested by applying full-area pneumatic pressure to determine the diaphragm’s lifetime.

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Sugianto, Sugianto, Suharyo Hadisaputro, Supriharti Supriharti, Munasik Munasik, and Mateus Sakundarno Adi. "Beberapa Faktor yang Berpengaruh terhadap Barotrauma Membran Timpani pada Penyelam Tradisional di Wilayah Kabupaten Banyuwangi." Jurnal Epidemiologi Kesehatan Komunitas 2, no. 1 (2017): 27. http://dx.doi.org/10.14710/j.e.k.k.v2i1.3969.

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Background : Tympanic membrane barotraumas is a rupture of tissue structure and its sequel. The initial research results show that there was 39.7% of tympanic membrane prevalence. The aim of the research was to prove the effect of several internal and external factors in traditional divers on tympanic membrane barotraumas.Method : The design used was cross sectional study strengthened by in-depth interview. The number of respondent was 130 from two groups of traditional divers taken in proportional stratiﬁed random sampling. The data analysis were univariate, bivariate, and multivariate.Result

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Sugianto, Sugianto, Suharyo Hadisaputro, Supriharti Supriharti, Munasik Munasik, and Mateus Sakundarno Adi. "Beberapa Faktor yang Berpengaruh terhadap Barotrauma Membran Timpani pada Penyelam Tradisional di Wilayah Kabupaten Banyuwangi." Jurnal Epidemiologi Kesehatan Komunitas 2, no. 1 (2017): 27. http://dx.doi.org/10.14710/jekk.v2i1.3969.

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Background : Tympanic membrane barotraumas is a rupture of tissue structure and its sequel. The initial research results show that there was 39.7% of tympanic membrane prevalence. The aim of the research was to prove the effect of several internal and external factors in traditional divers on tympanic membrane barotraumas.Method : The design used was cross sectional study strengthened by in-depth interview. The number of respondent was 130 from two groups of traditional divers taken in proportional stratiﬁed random sampling. The data analysis were univariate, bivariate, and multivariate.Result

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29

Kweon, Hyeokbin, and Kibum Kim. "Polymer electrolyte membrane dehydration and impedance analysis of electrochemical hydrogen compressor." Journal of Industrial Science and Technology Institute 38, no. 01 (2024): 7–18. http://dx.doi.org/10.54726/jisti.38.1.2.

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30

Yang, Rui, Hyeokbin Kweon, and Kibum Kim. "Preliminary Study for the Commercialization of a Electrochemical Hydrogen Compressor." Energies 16, no. 7 (2023): 3128. http://dx.doi.org/10.3390/en16073128.

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A global energy shift to a carbon-neutral society requires clean energy. Hydrogen can accelerate the process of expanding clean and renewable energy sources. However, conventional hydrogen compression and storage technology still suffers from inefficiencies, high costs, and safety concerns. An electrochemical hydrogen compressor (EHC) is a device similar in structure to a water electrolyzer. Its most significant advantage is that it can accomplish hydrogen separation and compression at the same time. With no mechanical motion and low energy consumption, the EHC is the key to future hydrogen co

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Cormos, Calin-Cristian, Letitia Petrescu, Ana-Maria Cormos, and Cristian Dinca. "Assessment of Hybrid Solvent—Membrane Configurations for Post-Combustion CO2 Capture for Super-Critical Power Plants." Energies 14, no. 16 (2021): 5017. http://dx.doi.org/10.3390/en14165017.

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The reduction of fossil CO2 emissions from key relevant industrial processes represents an important environmental challenge to be considered. To enable large-scale deployment of low carbon technologies, a significant research and development effort is required to optimize the CO2 capture systems. This work assesses various hybrid solvent-membrane configurations for post-combustion decarbonization of coal-based super-critical power plants. As an illustrative chemical solvent, Methyl-Di-Ethanol-Amine was assessed. Various membrane unit locations were assessed (e.g., top absorber, before absorbe

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Li, Long, QianChao Liang, JianFeng Zhao, Yang Zhang, and YiFan Liang. "Design and Simulation of Proton Exchange Membrane Fuel Cell Exhaust Gas Recovery System." E3S Web of Conferences 186 (2020): 03007. http://dx.doi.org/10.1051/e3sconf/202018603007.

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The compressed air from high-pressure compressor enters the proton exchange fuel cell and was discharged from the cathode after reacting. This part of the exhaust gas had a certain residual pressure. In order to study the effect of cathode exhaust gas residual pressure recovery on the efficiency of proton exchange membrane fuel cell system, this paper used Simulink software to establish a proton exchange membrane fuel cell exhaust gas recovery system model. In the model, the mass flow of supply air was controlled by controlling the air excess ratio Under this condition, the work done by the ex

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Aksoy, S., B. Mitlin, and H. Borowy. "Structural Evaluation and Testing of Swept Compressor Rotor." Journal of Engineering for Gas Turbines and Power 116, no. 1 (1994): 217–22. http://dx.doi.org/10.1115/1.2906796.

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This paper summarizes specific critical issues encountered in the structural analysis of a swept first-stage compressor blade of a gas turbine engine and the results of the test to evaluate the accuracy of the modeling and surface stress prediction procedure. The surface stresses of a three-dimensional structure were obtained using membrane elements attached to the surface of solid elements. Steady stress measurements were then made during accelerations and decelerations to and from design speed. The test was conducted in an evacuated spin rig. The measurements were used to evaluate the validi

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Li, Chun Hua, Xin Jian Zhu, Qing Jun Zeng, and Yun Long Wang. "Dynamic Modeling of the Air Supply System for PEMFC Stack." Advanced Materials Research 512-515 (May 2012): 1371–75. http://dx.doi.org/10.4028/www.scientific.net/amr.512-515.1371.

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The dynamic model of the air supply system for a proton exchange membrane fuel cell (PEMFC) stack is developed in this paper. The PEMFC cathode/anode, and air supply system including a compressor, a motor, and a supply manifold(SM) are modeled; the compressor performance map is identified based on a fuzzy neural network (FNN). The PEMFC air supply system is simulated by using Matlab environment. The simulation results show that the proposed models can effectively represent the dynamic characteristics of the system components, and lay the foundation for the control strategy design of the PEMFC

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Cravero, Carlo, and Davide Marsano. "A comparison of strategies to extend the operating range of radial compressors for turbocharging." E3S Web of Conferences 414 (2023): 02011. http://dx.doi.org/10.1051/e3sconf/202341402011.

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The operating range extension of radial compressors is a crucial aspect in turbocharging the internal combustion engines in order to extend the operating range of the system at high efficiency for fuel and environmental impact reduction. The future scenario of automotive propulsion will have the fuel cells at the top of the ranking of possible reference systems in substitution of thermal reciprocating engines. Proton exchange membrane fuel cells for automotive or aerospace vehicles are frequently turbocharged because compressed air for the fuel cell stack is required in the cathode system. The

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Zaytsev, A. A., M. A. Kharitonov, V. A. Chernetsov, and E. V. Kryukov. "Current possibilities for nebulizer therapy." Medical Council, no. 15 (December 8, 2019): 106–11. http://dx.doi.org/10.21518/2079-701x-2019-15-106-111.

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This article discusses the main aspects of the nebulizer therapy used to treat respiratory diseases. The basic principle of operation of all types of nebulizers is based on the generation of aerosol containing particles comprising an active substance. Currently, there are three types of nebulizers: jet, or compressor (which uses the energy of a gas jet), ultrasonic (which uses oscillation energy of the piezoelectric element) and membrane (Mesh nebulizers). The jet nebulizers are the most common, because they have affordable cost, are easy to use, however, using this type of nebulizers is accom

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Huang, Weirong, Xiaobin Jiang, Gaohong He, et al. "A Novel Process of H2/CO2 Membrane Separation of Shifted Syngas Coupled with Gasoil Hydrogenation." Processes 8, no. 5 (2020): 590. http://dx.doi.org/10.3390/pr8050590.

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A novel process of membrane separation for H2/CO2 of shifted syngas coupled with gasoil hydrogenation (NMGH) is proposed. First, a new process, with two-stage CO2-selective and one-stage H2-selective membranes, was developed to substitute the conventional PSA separation devices to remove CO2 and purify H2 in coal gasification refineries to reduce energy consumption and investment costs. Then, the process was coupled with gasoil hydrogenation and the recycled H2 produced by the hydrogenation reactor could be further purified by the H2-selective membrane, which increased the H2 concentration of

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Alawad, Suhaib M., Osman Shamet, Dahiru Lawal, Atia E. Khalifa, and Mohamed Kotb. "The optimum location of vapor compressor in multistage vacuum membrane distillation system." Thermal Science and Engineering Progress 56 (December 2024): 103089. https://doi.org/10.1016/j.tsep.2024.103089.

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McCandless, F. P. "A comparison of membrane cascades, some one-compressor recycle permeators, and distillation." Journal of Membrane Science 89, no. 1-2 (1994): 51–72. http://dx.doi.org/10.1016/0376-7388(93)e0208-2.

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Alabid, Maytham, and Cristian Dinca. "Parametrization Study for Optimal Pre-Combustion Integration of Membrane Processes in BIGCC." Sustainability 14, no. 24 (2022): 16604. http://dx.doi.org/10.3390/su142416604.

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Presently, the utilization of biomass as an energy source has gained significant attention globally due to its capacity to provide constant feedstock. In 2020, biomass combustion generated 19 Mt of CO2, representing an increase of 16% from the previous year. The increase in CO2 emissions is fundamentally due to biomass gasification in power plants. Due to the growing demand to reduce greenhouse gas emissions, this paper aims to improve CO2 capture technologies to face this challenge. In this context, the utilization of three stages of the polymer membrane process, using different compressor pr

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Borisov, Galin Rusev, Nevelin Rusev Borisov, and Evelina Slavcheva. "Non-Carbon-Supported, Pt-Based Catalysts with Applications in the Electrochemical Hydrogen Pump/Compressor (EHP/C)." Applied Sciences 15, no. 12 (2025): 6507. https://doi.org/10.3390/app15126507.

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In this study, platinum (Pt) nanocatalysts were synthesized via a sol-gel method over the non-stoichiometric, Magnéli phase titanium oxides (TinO2n−1) at varying Pt loadings (10–40 wt.%). Their structural and morphological properties were characterized, and after preliminary electrochemical screening, the catalysts were integrated into commercially available gas diffusion electrodes (GDEs) with a three-layer structure to enhance mass transport and catalyst utilization. Membrane electrode assemblies (MEAs) were fabricated using a Nafion® 117 polymer membrane and tested in a laboratory PEM cell

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Wang, Yifan, Sai Vudata, Paul Brooker, and James M. Fenton. "Electrochemical Hydrogen Compression: Modeling, Internal States Estimation and System Control." ECS Meeting Abstracts MA2022-02, no. 40 (2022): 1469. http://dx.doi.org/10.1149/ma2022-02401469mtgabs.

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Hydrogen is a clean and flexible energy carrier that can be produced from diverse renewable energy sources (e.g., wind, solar and biomass) and used in a broad range of applications (e.g., transportation and power generation). Due to its high efficiency and carbon-free emission, hydrogen will play a key role in transition to Net Zero Emissions by 2050. However, for a successful hydrogen economy to develop, the compression and storage costs of hydrogen must be lowered to overcome its low volumetric energy density (i.e., 0.01079 MJ/L at STP). Currently， conventional mechanical compression account

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Wada, Akira, Hidehiro Kametani, Koichi Suzumori, and Shuichi Wakimoto. "Development of a Hose-Free FMA Driven by a Built-In Gas/Liquid Chemical Reactor." International Journal of Automation Technology 10, no. 4 (2016): 511–16. http://dx.doi.org/10.20965/ijat.2016.p0511.

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Although pneumatic rubber actuators have unique advantages, (e.g., compliance, lightness, and cheapness) they require an air compressor, valves, and air supply hoses, limiting their use in portable devices. In our previous paper, we proposed the basic working principle of a novel pneumatic source for rubber actuators. This was based on the reversible chemical reaction of water electrolysis/synthesis, using a proton-exchange membrane fuel cell (PEMFC). In the current study, we developed a small PEMFC reactor based on this principle and applied it to a flexible micro actuator (FMA), which is a t

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Vrlić, Martin, Daniel Ritzberger, and Stefan Jakubek. "Safe and Efficient Polymer Electrolyte Membrane Fuel Cell Control Using Successive Linearization Based Model Predictive Control Validated on Real Vehicle Data." Energies 13, no. 20 (2020): 5353. http://dx.doi.org/10.3390/en13205353.

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In this paper, a polymer electrolyte membrane fuel cell (PEMFC) stack control study is presented. The goal is to track the transient power demand of a real fuel cell (FC) vehicle while ensuring safe and efficient operation. Due to the dynamically changing power demand, fast transients occur in the internal states of the fuel cell (e.g., pressure, humidity, reactant mass) leading to degradation effects (e.g., high/low membrane overpressure, reactants starvation) which are avoided by imposing safety constraints. Efficiency is considered in terms of internal voltage losses minimization as well as

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Li, Yuehua, Pucheng Pei, Ze Ma, Peng Ren, and Hao Huang. "Analysis of air compression, progress of compressor and control for optimal energy efficiency in proton exchange membrane fuel cell." Renewable and Sustainable Energy Reviews 133 (November 2020): 110304. http://dx.doi.org/10.1016/j.rser.2020.110304.

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Ahmed, N. U. "Mathematical problems in modeling artificial heart." Mathematical Problems in Engineering 1, no. 3 (1995): 245–54. http://dx.doi.org/10.1155/s1024123x95000159.

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In this paper we discuss some problems arising in mathematical modeling of artificial hearts. The hydrodynamics of blood flow in an artificial heart chamber is governed by the Navier-Stokes equation, coupled with an equation of hyperbolic type subject to moving boundary conditions. The flow is induced by the motion of a diaphragm (membrane) inside the heart chamber attached to a part of the boundary and driven by a compressor (pusher plate). On one side of the diaphragm is the blood and on the other side is the compressor fluid. For a complete mathematical model it is necessary to write the eq

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Liu, Yunxia, Yuanyang Zhao, Qichao Yang, Guangbin Liu, Liansheng Li, and Zhicheng Gao. "Performance study of centrifugal air compressor for proton exchange membrane fuel cell systems." Energy Science & Engineering 10, no. 1 (2021): 208–18. http://dx.doi.org/10.1002/ese3.1023.

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Vorotyntsev, V. M., P. N. Drozdov, I. V. Vorotyntsev, and D. E. Tsygorov. "Gases high purification from unreadily permeating impurities in one-compressor multistage membrane apparatuses." Theoretical Foundations of Chemical Engineering 43, no. 4 (2009): 404–7. http://dx.doi.org/10.1134/s0040579509040083.

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Vorotyntsev, I. V., D. N. Shablykin, P. N. Drozdov, M. M. Trubyanov, A. N. Petukhov, and S. V. Battalov. "Separation of ammonia-containing gas mixtures in a one-compressor multistage membrane apparatus." Petroleum Chemistry 57, no. 2 (2017): 172–81. http://dx.doi.org/10.1134/s0965544116110153.

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Zou, Jiexin, Yiqi Jin, Zengyin Wen, et al. "Insights into electrochemical hydrogen compressor operating parameters and membrane electrode assembly degradation mechanisms." Journal of Power Sources 484 (February 2021): 229249. http://dx.doi.org/10.1016/j.jpowsour.2020.229249.

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