PDF Publication Title:
Text from PDF Page: 033
Chapter 2 Dimensionally stable N-PE composite membranes for DMFC applications data are not available, prediction of the fuel cell performance is often made [21-23] using the so-called characteristic number of a specific membrane, β1; the ratio of the proton conductivity of the membrane over to its metha- nol permeability: β 1 = σP ( 7 ) It is important to keep in mind that this characteristic number is independ- ent of membrane thickness. In order to compare the performances of membranes of different thick- nesses, it might be better to estimate characteristic numbers dependent on membrane thickness, such as those in eq. 8 and 9. β 2 = Areal resistance FluxMeOH (8) 1 β3 = Areal resistance (9) Flux MeOH Figure 5 presents the estimated β1, β2 and β3 values for all membranes of this study at various methanol concentrations. N117 membrane has the highest β1 value at 1M and N-PE has the lowest (Fig. 5a). The values of both N117 and DE2020 membranes decrease at higher methanol concentration whereas the β1 of N-PE membrane increases due to its low methanol per- meability and increasing conductivity at higher methanol concentration. For both β2 and β3, N117 membrane has the highest value at 1M. Interest- ingly, there is no difference between the trend of β2 and β3 of all membranes at high concentrations. As a conclusion, thickness dependent (β2 and β3) and independent (β1) methods predict that the N117 membrane will perform better than N-PE and DE2020 membranes at 1M, but the differences will become smaller at 25PDF Image | Development of membrane materials for direct methanol fuel cells
PDF Search Title:
Development of membrane materials for direct methanol fuel cellsOriginal File Name Searched:
thesis_H_Yildirim.pdfDIY PDF Search: Google It | Yahoo | Bing
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
IT XR Project Redstone NFT Available for Sale: NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Be part of the future with this NFT. Can be bought and sold but only one design NFT exists. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Turbine IT XR Project Redstone Design: NFT for sale... NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Includes all rights to this turbine design, including license for Fluid Handling Block I and II for the turbine assembly and housing. The NFT includes the blueprints (cad/cam), revenue streams, and all future development of the IT XR Project Redstone... More Info
Infinity Turbine ROT Radial Outflow Turbine 24 Design and Worldwide Rights: NFT for sale... NFT for the ROT 24 energy turbine. Be part of the future with this NFT. This design can be bought and sold but only one design NFT exists. You may manufacture the unit, or get the revenues from its sale from Infinity Turbine. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Supercritical CO2 10 Liter Extractor Design and Worldwide Rights: The Infinity Supercritical 10L CO2 extractor is for botanical oil extraction, which is rich in terpenes and can produce shelf ready full spectrum oil. With over 5 years of development, this industry leader mature extractor machine has been sold since 2015 and is part of many profitable businesses. The process can also be used for electrowinning, e-waste recycling, and lithium battery recycling, gold mining electronic wastes, precious metals. CO2 can also be used in a reverse fuel cell with nafion to make a gas-to-liquids fuel, such as methanol, ethanol and butanol or ethylene. Supercritical CO2 has also been used for treating nafion to make it more effective catalyst. This NFT is for the purchase of worldwide rights which includes the design. More Info
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
Infinity Turbine Products: Special for this month, any plans are $10,000 for complete Cad/Cam blueprints. License is for one build. Try before you buy a production license. May pay by Bitcoin or other Crypto. Products Page... More Info
CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com (Standard Web Page)