PDF Publication Title:
Text from PDF Page: 006
the “Conventional” line in Figure 4. Furthermore, there has been little research done to improve the analysis of such fluids other than computational simulations. To avoid overestimation, the heat exchangers were sized using a piecewise technique and the heat exchanger was split into dimensionless axial nodes where fluid properties varied more linearly as shown by the “Piecewise” line in Figure 4. The technique involves iteratively stepping through the heat exchanger at different nodal points. Once solved, the fluid properties are updated until error is minimized before the analysis steps to the next node. Depending on the design configuration, appropriate convective correlations were used from standard heat transfer analysis [27, 28]. This technique allows one to account for variation in fluid properties to approximate heat exchanger size without costly and time- consuming testing. coefficient ξ a suitable speed and characteristic diameter may be calculated using Ns and Ds. Combining φ, ψ, and ξ allows an efficiency to be specified per η [32, 33]. Equations (11) through (16) define the non- dimensional parameters used in the turbo-machinery component selection. Utilizing these results for an 85% efficiency yields a relatively small specific speed and a large specific diameter requirement. The Cordier diagram dictates that for this combination of operating points reciprocating pump is the optimal starting choice for the compression cycle [32, 33]. This determination was also repeated for the expander selection discussed later and shown in Figure 5. N N VF (11) Figure 4. Conventional vs. Piecewise Method for heat exchanger analysis. 4. Component Selection 4.1. Pump Supercritical Carbon Dioxide, SCO2 systems present not only thermal design challenges but also gives rise to special considerations for the pump. There have been multiple attempts that address the optimization of a pump for SCO2 applications [15, 29, 31, 32] that indicate an efficiency of 85% to be reasonable and conservative. Efficiency may often be increased through later optimization, however, for the purpose of this paper an 85% efficiency is assumed to determine the work required to compress the SCO2 from 12 MPa to 20 MPa. In order to determine an initial pump design the concepts of the Cordier diagram are used determine an optimal type of pump for the cycle. By comparing non-dimensional parameters such as the flow coefficient φ, head coefficient ψ, and power x s H3/4 D DH1/4 sV (12) F VF (13) ND3 y=H (14) N2D2 x=P (15) (16) rN3D5 h = fy 6 Figure 5. Specific speed and specific diameter operating points for pump and expander plotted with efficiency curves for reciprocating pumps. Where N is rotations per minute, Vf is volumetric flow rate of the fluid in cubic meters per second, H is effective head in meters, D is the effective diameter inPDF Image | Waste Heat Energy Supercritical Carbon Dioxide Recovery Cycle Analysis and Design
PDF Search Title:
Waste Heat Energy Supercritical Carbon Dioxide Recovery Cycle Analysis and DesignOriginal File Name Searched:
001.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)