PDF Publication Title:
Text from PDF Page: 277
improves its efficiency over the helium cycle. This is due to the flatter isobaric lines in the case of CO2, since they are affected by the vicinity of the critical point. This is the main reason why the supercritical CO2 cycle is very efficient even at medium temperatures. The low compressor work (~ 30% of the turbine output, vs. ~ 44% in the case of helium) makes intercooling unattractive. This significantly simplifies the cycle design since no intercoolers have to be introduced. In the helium cycle each intercooler requires a separate cooling water line and additional support systems. Even though intercoolers are not likely to be large, they increase the complexity of the system. If the standard 880oC helium cycle is compared to the CO2 cycle we can observe that the mean temperature of heat rejection is significantly higher in the case of the helium cycle. This is beneficial in the precooler design for the helium cycle, as the higher temperature difference between the working fluid and cooling water reduces the required size of the precooler and its pressure drop. On the other hand, the lower sensitivity of the supercritical CO2 cycle to the pressure drop mitigates this drawback. In general, the precooler design is not a significant problem for the CO2 cycle because the improvement of the heat transfer coefficient close to the critical point is another beneficial factor. 12.1.1 Helium Brayton Cycle with Multiple Re-heat and Inter-cooling The preceding section compared the basic thermodynamic features of the supercritical CO2 cycle and the helium Brayton cycles (with 1 to 3 stages of inter- cooling). Recently, proposals for multiple re-heat and inter-cooled helium Brayton cycles for a molten salt (MS) cooled reactor have appeared in the literature [Peterson, 2003]. This work claims that a three times re-heated and inter-cooled helium Brayton cycle is capable of achieving overall cycle efficiency around 44% at 600oC and thus can be considered a competitor to the supercritical CO2 cycle at this lower temperature range. The high temperature design of this work is claimed to have an overall cycle efficiency up to 54%. A summary of their results and assumptions is presented in Table 12.2. The code CYCLES was exercised using these assumptions to recalculate the results and 258PDF Image | Advanced Nuclear Power Technology Program A Supercritical Carbon Dioxide Cycle for Next Generation Nuclear Reactors
PDF Search Title:
Advanced Nuclear Power Technology Program A Supercritical Carbon Dioxide Cycle for Next Generation Nuclear ReactorsOriginal File Name Searched:
dostal.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 |