PDF Publication Title:
Text from PDF Page: 005
Here – specific volume at the vane grid exit, – fluid velocity at the vane grid exit, – flow angle at the vane grid exit, – flow coefficient. This effect increases the stage tip losses and hurts the counter-pressure turbine efficiency. Therefore, the gain in axial dimensions causes the efficiency losses. The first stage presents an especially complicated problem because at the considered initial parameters the carbon dioxide specific volume at the vane exit is very small. At the same time, according to the equation (1), with an increase of the diameter , the enthalpy drop and the velocity grows accordingly. This contradiction between the Allam cycle turbine price and its efficiency is emphasized by the carbon dioxide specific volume twice smaller than the steam one. This difference may be balanced at acceptable vane height by twice larger carbon dioxide massflow than the steam turbine flow. This is followed by a drastic increase of the turbine power. In other words, the turbine power must be considerably high in this cycle. The reasons above determined for the parametric study the turbine power Nэ = 400 MW. The flowpath losses caused by the short vanes and blades are balanced by the flow increase. Together with this, the study thoroughly considers the tip losses mitigation. According to [4] the endwall losses structure is the following: (3) where – relative height expressed as a ratio to the axial chord , – relative pitch, and –inlet and outlet flow angles, – Reynolds number for the relative velocity of the flow exit, – relative coefficient equal to 1.9 for active stages and 0.7 for reactive stages. The first equation (3) member reflects losses concerned with friction in the endwall surfaces. The second member reflects the losses from secondary flow and tip stall swirls. The first member losses cannot be mitigated, but the second ones may be remarkably reduced by reduction of the reduced relative pitch near endwall by ithe ntroduction of curved ribs with height comparable to the hickness of the endwall boundary layer. Figure 3 illustrates this solution by results of a blade row flow test, curve 1 shows losses distribution without ribs, curve 2 – with ribs. FIGURE 3. Distribution of local energy losses coefficient along the height of the blade row [5] In the figure, it is seen that in the ribbed blade row channel the endwall losses are practically absent. The energy total loss coefficient in this blade row is 1.7% lower and the absolute losses are 30 % lower than in the initial blade row. 020026-4PDF Image | Supercritical CO2 gas turbines for high-power generation
PDF Search Title:
Supercritical CO2 gas turbines for high-power generationOriginal File Name Searched:
15081659.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)