PDF Publication Title:
Text from PDF Page: 021
correctly predict the system behavior; on the other hand, non-classical dense gas phenomena could be exploited to improve efficiency: namely, shock formation and subsequent losses could be ideally avoided, if the turbine expansion could happen entirely within or in the immediate neighborhood of the inversion zone. In fact properly operating the turbine in the very neighborhood of the curve, the flow field evolves almost entirely within the inversion zone, and is shock-free: as a result, except for viscous drag, the flow remains isentropic through the entire cascade. Unfortunately, the inversion zone has a quite limited extent: therefore, a reduction in the temperature jump between the heater and condenser stages is generally required in order to completely operate the turbine within the inversion zone. Now, it is well-known from thermodynamic theory that a too small temperature jump implies low thermal cycle efficiency. Moreover, a small temperature (i.e. enthalpy) jump also means low cycle power output. This important drawback has been the stumbling block to the development of real-world BZT Organic Rankine Cycles. In practice, BZT gas effects can find application in ORC turbomachinery only finding a reasonable trade-off between the above opposite requirements. Then, two ways are possible to reduce the losses in the ORC: the use of particular fluids for which the compression shock are forbidden or anyway very reduced; the optimization of the geometry in order to maximize the efficiency. In the present work, these two aspects are analyzed in deep. Dense gas flows over an isolated airfoil and over a turbine blade are analyzed in order to understand the effects of freestream conditions of pressure and temperature on the aerodynamic performances, and the role played by BZT effects. The second aspect is related to shape optimizations, performed to maximize some aerodynamic properties on the optimal geometries. The state of art for the dense gases numerical simulation will be presented in the next paragraph, followed by the brief description of the Chapters. 1.1. State of Art In this paragraph the state of art on the numerical simulation of dense gas flow is described, including the contribution made by the author, and the brief description of all the results achieved. The most important among them will be presented widely in the Chapter 4. This section is divided in three paragraphs. The first two concern the fluid- 20PDF Image | ANALYSIS AND OPTIMIZATION OF DENSE GAS FLOWS: APPLICATION TO ORGANIC RANKINE CYCLES TURBINES
PDF Search Title:
ANALYSIS AND OPTIMIZATION OF DENSE GAS FLOWS: APPLICATION TO ORGANIC RANKINE CYCLES TURBINESOriginal File Name Searched:
phd_thesis_PM_CONGEDO.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)