PDF Publication Title:
Text from PDF Page: 316
Further insight can be gained from the idealized T - S diagram for the cycle, Figure 8-32. The compression of the air and fuel streams is represented here as a single adiabatic reversible (constant S) process in which the temperature of the gases rises above ambient. The heating of Figure 8-32 Regenerative Brayton Cycle Fuel Cell Power System the air and also the fuel streams first in the recuperative exchanger, then in the fuel cell and finally in the combustor is assumed to occur along a single line of constant pressure. The subsequent expansion of the combustion gases in the turbine is also represented as an adiabatic reversible (constant S) process in which the temperature of the gases drops to a value close to that of the gases entering the fuel cell. The pressure ratio (PR) of the turbine (and of the compressor) is therefore established by the turbine nozzle inlet temperature (NIT) and the fuel cell operating temperature. In general, the pressure ratio of a regenerative Brayton cycle is low compared with that of a combined Brayton-Rankine cycle. A low pressure ratio allows a low outlet temperature of the exhaust gases from the recuperative exchanger as heat is transferred to the air leaving the compressor (and possibly also the fuel) and consequently results in low heat rejection and a high cycle efficiency. The practical aspects of the cycle involve the efficiencies of the gas compressors, the turbine expander, and the fuel cell; the pressure losses as the gases flow through the system; and the temperature differences and the difference in heat capacities of the streams flowing through the recuperative heat exchanger. Other aspects of the fuel cell operation must be considered in greater detail for the design and evaluation of the power system. These include the possible need for fuel reforming external to the cell and the recycle of combustion product streams to provide the steam required to carry out the reforming process, to avoid carbon deposition, and to provide H2 for effective cell operation. 8-71PDF Image | Fuel Cell Handbook (Seventh Edition)
PDF Search Title:
Fuel Cell Handbook (Seventh Edition)Original File Name Searched:
fuel-cell-handbook.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)