PDF Publication Title:
Text from PDF Page: 242
zTurbo confirm that the adopted assumptions lead to unwanted design features, such as converging meridional channels and large flaring angles on the last stages. The predicted fluid-dynamic efficiency for the transonic and the supersonic machine is around 86% and 81%, respectively. The down-scaling potential of the centrifugal architecture is assessed, by applying the novel design methodology to the sizing of two 10 kWE ROTs, handling an expansion ratio of 45. The design of a 5 stages transonic turbine, and of a 3 stages slightly supersonic one is presented. The proposed design procedure proves valuable in overcoming the criticality pre- viously highlighted. In particular, the resulting meridional channel monotonically diverges maintaining maximum flaring angles lower than 10◦. The resulting turbines are projected to exceed a fluid-dynamic efficiency of 79% and 77%, with speed of revolution around 124000 and 15400 RPM, respectively. It is demonstrated that the ROT architecture is a promising concept for future ORC power systems, capable of preserving its features and performance when downscaled, for both transonic and slightly supersonic configurations. The proposed methodology and tools are virtually applicable to the preliminary design of any ROT expander, working with any reasonable fluid. Chapter 4 presents the research related with another innovative component, i.e., a so-called direct thermal storage system whereby the same fluid is circulated in the heat source, serves as the thermal storage medium, and acts as the working fluid of the ORC turbo-generator. Several options are presented regarding the integration of the thermal storage system into the plant. The most promising solutions seem those decoupling the thermal energy source from the ORC power block. It is demonstrated how, apart from a substantial simplifications in terms of both plant layout and operational strategy, this configuration ensures high exergetic performance of the thermal charge and discharge processes. A newly conceived variant of the Rankine cycle is introduced, whereby a flashing evap- oration process precedes the power-generating expansion. The properties of the adopted complex-molecule working fluids are such that flashing can lead to saturated or superheated vapor conditions. This characteristic implies further simplifications of the system. The ef- ficiency of an ORC power plant working according to this complete flashing cycle (CFC) may be, under the described assumptions, only marginally lower than what observed for a conventional evaporative ORC power system. A case study regarding a 100 kWE solar plant is presented: the proposed system features a constant-pressure thermocline storage system, with vapour generation through external flashing of the liquid extracted from the storage vessel. The proposed turbo-generator achieves an estimated 25% efficiency, which corresponds to a solar-to-electric value of 18% in design conditions for the complete system. With siloxanes compounds, the estimated values of storage density are around 10 kWhE for a cubic meter of storage volume, which is around half of what typically achieved with the storage of diathermic oils, but without considering additional filling materials. The advantages in terms of simplification of the plant layout could overcome the relatively low values of storage densities, the need of pres- surization, and the specific cost of the fluids. A dynamic model, developed for the complete system, is used to investigate the performance under extreme transient conditions. This allows to preliminary assess the feasibility of remotely controlled operation. Conclusions & Perspectives 231PDF Image | New Concepts FOR Organic Rankine Cycle Power Systems
PDF Search Title:
New Concepts FOR Organic Rankine Cycle Power SystemsOriginal File Name Searched:
PhDTesis_ECasati.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)