PDF Publication Title:
Text from PDF Page: 014
Conclusion The supercritical Rankine cycle, in general, offers an additional 30% relative improvement in the thermal efficiency as compared to the same system operating in the subcritical region. The cycle has been successfully utilized in fossil fuel plants but the current available materials prohibit reliable application of the supercritical cycle to nuclear applications. There is much work to be done in order to advance materials to the point where they will be able to reliably withstand the stresses of a supercritical environment inside a nuclear reactor for a designed life span of approximately 60 years. While many of the material advances are due to the advent of specialized coatings, it is reasonable to suspect that new advances could also be made by improvements in the isotopic quality of the base metals. It has been known for decades that isotopically pure materials have considerably better thermal conductivity. Improvements in isotopic purity can affect heat transfer characteristics by up to a factor of three [11], possibly more. It should be noted however, the cost of obtaining sufficient quantities of such materials may be prohibitive and the benefit gained is temperature dependant. One other consideration for a supercritical Rankine cycle is the size of the plant. For large plants on the order of a 1600 MWe the thermal efficiencies are in the 40% region. By the time the power plants are reduced to the 20 MWe range, thermal efficiencies are down into the low to mid 20% region [7]. As indicated by the geothermal propane application, when a plant is in the 400 kWe region, the thermal efficiency is lower yet. For the propane cycle, it was 9%; by extrapolation, a supercritical steam cycle would be ≈ 19% efficient were it applicable. The issue for smaller systems is the cost effectiveness. A supercritical cycle is simpler and reduces the amount of equipment required to operate the cycle but because it operates at much higher pressures and temperatures the cost of the equipment which is required, goes up considerably. Small systems may have improved thermal efficiency but may not be the most cost effective solutions; for this reason they should be considered skeptically before being implemented. Just because a system can be made more efficient does not mean it is the best allocation of money, or material resources. - 10 -PDF Image | Storage, Transformation and Upgrading of Thermal Energy
PDF Search Title:
Storage, Transformation and Upgrading of Thermal EnergyOriginal File Name Searched:
rankine.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)