PDF Publication Title:
Text from PDF Page: 004
๐ = ๐ฅh0 (1) ๐ข2 4 ๐ = ๐๐5 (2) ๐ข5 Efficiency can be plotted as a function of these two coefficients, it is observed that the maximum efficiency occurs when the loading coefficient is in the range of 0.9-1.0 and the flow coefficient is between about 0.2-0.3. FIGURE 2. Efficiency: Loading and Flow Coefficients [1] Radial turbines have been extensively investigated, both experimentally and numerically, at NASA Lewis Research Centre, starting in the mid1960s. The first analytical study on the radial turbine performance was carried out by Rohlik in order to determine the optimum geometry. In these introductory notes, will be illustrated primarily on the various, one-dimensional computer models that have been developed in the past. Reference [2] describes a computer code, based on the model reported in [3] that can be used to predict the off-design performance of a Radial Inflow Turbine. An improved version of the computer code described in [2] is presented in [4]: it features better loss models than those implemented in [3] and also allows to account for trailing edge blockage and to compute flow conditions for pressure ratios at or beyond stator and/or rotor chocking. A parallel development beside the program described in [2, 4], NASA also released the RIFTUD (Radial Inflow Turbine Design) [5] code. RIFTUD is a design code based on Rohlikโs model [6] that produces an โoptimalโ geometry for a prescribed mass flow and torque. RIFTUD features a slightly different flow-model than the one used in [2, 4], it uses a multiple stream tube analysis at the rotor outlet. This feature has subsequently [7] been merged into the off-design code of references [2, 4], thus giving rise to the RTOD (Radial Turbine Off-Design) code [7]. RTOD is still being distributed by NASA today [8], although its use is limited to US citizens. The purpose of this paper is the development of new methodologies for the optimal design of radial turbines, a tool called RTGD has been developed, which uses mathematical models to simplify the turbine design considering the flow losses in the rotor. Regarding loss phenomena have been implemented six different types of losses: incidence, passage, tip-clearance, trailing edge, windage losses and kinetic-energy loss at the rotor exit. Contrary to what was expected, not much data on real radial turbines has been found in the literature, therefore RTGD has been validated considering the only two cases found, concerning a turbine that uses Air [9] as the working fluid and another that uses Argon [4]. In the case of the turbine Argon, RTGD it was compared with the RIFTUD code. 020097-3PDF Image | Radial turbine preliminary design and performance prediction
PDF Search Title:
Radial turbine preliminary design and performance predictionOriginal File Name Searched:
5138830.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)