PDF Publication Title:
Text from PDF Page: 011
Energies 2020, 13, 5043 11 of 20 4.2. sCO2 Turbine Performance with and without an Integrated FFC Subsystem The computations for the FFCTH assumed that the FFC would achieve similar performance when scaled to design power as it did during the experiment. All thermochemical properties of gases were taken from NIST (Gaithersburg, MD, USA) software MINI-REFPROP [47]. To isolate the effects of integrating the FFC system with the standard sCO2 cycle, the total power generated by the turbine system alone was held constant at 6 MW. To generate this power, Table 4 lists the temperature and pressure of various state points as defined in Figure 1. Table 4. Temperatures and pressures of the state points in the sCO2 cycle. State Point 1 2 2a 3 4 5 5a 6 Temperature (K) 300 318 414 733 913 780 452 331 Pressure (MPa) 7.5 20 20 20 20 7.5 7.5 7.5 The state points in Table 4 were taken from a rate of CO2 required to generate 6 MW of power from the sCO2 turbine system is 4.81 MW. The compression ratio in the system is 2.66. With these parameters, we evaluated the performance of an integrated FFC system, which is able to provide the heat required by sCO2 cycle. Air or oxygen is the oxidant for the FFC system. The oxygen case enables sequestration-ready exhaust from the FFC system. The heat rejected from the pre-cooler (states 6 to 1 in Figure 3) provides heat to separate oxygen from air using a thermally driven adsorption/desorption cycle [38]. If the heat rejected from the sCO2 cycle is not enough to separate enough oxygen for the FFC system, we adjusted the FFC operating voltage to enable more heat rejection. Also note that the efficiency of the air-separation is assumed to be acceptable in the design. The flexibility of the cycle state points to give us this unique opportunity of analyzing this cycle and the assumption is thus justified. The state points will need to be modified depending upon the specific material used for adsorption–desorption pumping of oxygen for air separation [38,39]. The fixed parameters used in the analysis is shown in Table 5. Table 5. Summary of the fixed parameters used in the analysis. Property Power generated by standard supercritical CO2 turbine cycle Efficiency of the standard supercritical CO2 turbine cycle (based on states 1–6) Compression ratio Value 6 MW 53.14% 2.66 previous sCO2 power cycle [40]. The mass flow is 48.35 kg/s. The total amount of heat rejected The fuel flowrate requirement of the FFCTH and its variation with Φ was assessed. The initial conditions for air (or oxygen) entering the fuel-rich combustion chamber of the FFC is 1 bar and 298 K. The Φ of the fuel-rich preburner varies, while Φ of the fuel-lean after-burner remains constant at 0.8. The assumed efficiency for the heat exchangers in the system is 90%. ηfu and ηfc (fixed at 0.7 and 0.5, respectively) are the average experimentally measured results over all Φ. Figure 7 shows the flow rate of methane required to generate the heat (10.8 MW) from the FFC with and without being CO2 sequestration-ready. Figure 7 shows the base-case fuel-flow required to meet the heat requirements with a standard sCO2 turbine cycle (Figure 1).PDF Image | Hybrid Fuel Cell Supercritical CO2 Brayton Cycle CO2 Storage
PDF Search Title:
Hybrid Fuel Cell Supercritical CO2 Brayton Cycle CO2 StorageOriginal File Name Searched:
energies-13-05043-v3.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)