PDF Publication Title:
Text from PDF Page: 151
in the intermediate (ν3=3-16) vibrational levels emerges; this equal number densities of vibrational levels is often termed as "Treanor plateau" [250]. Hocker et al [242] reported that the population of higher vibrational states (upto ν3 = 4) reached equal concentra- tions in less than 10 μ s in low pressure CO2 discharges. It was attributed to the very fast VV transfer rates and in the framework of this simple model high VV-transfer rates are responsible for equalization. Similar distributions in vibrational levels of CO2 asymmet- ric mode, in microwave plasmas, and in a very short time scales for DBDs have also been reported by Kozák et al. [64] from numerical simulations albeit in a more comprehensive model. The similarity in distributions calculated at different conditions in this model indic- ates that once a significant amount of CO2(v31) is created, it will always lead to an efficient VV transfer along the asymmetric mode and subsequently to over population of higher levels. An inversion between the first two states, that is higher density of CO2(v32) as compared with CO2(v31) occurs for the two low tplasma, at all pressures. It shows that, if the electrons are not continuously populating the initial levels, then there is a net flux towards highly excited states. There is no such inversion observed between CO2(v32) and CO2(v33) indicating that for the time scales probed the VV transfer between CO2(v32) to CO2(v33) is still slower when compared between the first two excited states; CO2(v32) population increases at the expense of CO2(v31) while CO2(v31) decreases due to lack of electron impact excitation. Lowest densities of all the levels are observed at all ressures when the voltage is switched on for the lowest time (tplasma = 0.077ms) at all pressures as expected. If we look at the evolution of vibrational distribution for a typical condition, figure 5.13 for the standard condition but when the voltage is switched off after 10 cycles of operation (tplasma = 0.077ms), we can see that distribution starts from a Boltzmann like distribution and it slowly evolves into Treanor like distribution. This form of evolution has been observed in all the conditions with few important differences. The common feature is that the population of initial states decreases with time while the population of higher states (ν3 > 2 ) increases with time. The amount of this decline in seed states depends on tplasma. When plasma is switched off, densities of higher levels increase at the expense of lower levels, which require electrons to be populated. The number of vibrational levels that are reaching the flat part (or over population) increases with plasma-on time. From the rate of evolution of vibrational distributions, rate of dissociation can be cal- culated – the second goal of this chapter. If it is assumed that the 20th level (CO2(v320)) along the asymmetric vibrational mode spontaneously dissociates into CO and O, then 142 5.9. RESULTS & DISCUSSIONPDF Image | Understanding CO2 containing non-equilibrium plasmas
PDF Search Title:
Understanding CO2 containing non-equilibrium plasmasOriginal File Name Searched:
20160125_CO_Ponduri.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 | RSS | AMP |