PDF Publication Title:
Text from PDF Page: 182
Chapter 4 Thermodynamic analysis In Figure 4.17 one can observe that there is a certain balance among the electrical efficiencies of the different configurations, thus confirming the prediction made in Section 2.4.2, i.e. that ICE and GT solutions would present comparable efficiencies. Obviously this is valid neglecting GT DIR REG that almost reaches 30%, i.e. the value achieved by the natural gas plant (indeed, there is practically no thermodynamic reason why this should not happen). ICE GAS efficiency is about 24%: this value could be predictable, as it is essentially the result of the product of electrical efficiency in case of natural gas feeding (30%) and gasifier cold gas efficiency (80%), since auxiliaries needs are limited. GT GAS REG almost reaches the same result, but only in the pressurised configuration. The ambient pressure one, in fact, is heavily penalised by power consumption of the syngas compressor, that passes from about 3 kWel to about 28 kWel, due to the larger mass flow rate to be supplied compared to the natural gas feeding: this nullifies the benefits related to the higher power output of the expander, which increases gross power output from 106 kWel to 124 kWel. In case of pressurised gasifier, instead, no fuel compressor is required anymore and consumption due to the air compressor required to feed the gasifier is lower (even if it is still considerable, 13 kWel). Moreover, it is recalled that pressurised conditions make the gasification process more efficient (in this case working pressure is 6.5 bar; for higher scale it reaches 20 bar). This is due to two different contributions. The first one is obviously the pressure itself (cold gas efficiency is an increasing function of this parameter), whereas the second one is related to the fact that air must be compressed: since compression is in general adiabatic, air temperature increases with the pressure ratio and this results in higher performance, same as in all combustion processes. Figures 4.19 and 4.20 graphically show the effects of these two thermodynamic parameters on gasifier cold gas efficiency. Cold gas efficiency of an ambient pressure gasifier as a function of air temperature is shown in the former, in order to investigate the pure effect of feeding this quantity, whereas in the latter the pressure effect is studied in two cases: in the first one it is investigated neglecting temperature, i.e. supposing to have a pressurised air source at ambient temperature, while in the second one a real configuration of pressurised gasifier fed by air compressed, and thus heated, by a compressor is being considered (the result is a sort of composition of the two previous curves). In these analyses, design data are obviously 154PDF Image | SMALL-SCALE BIOMASS POWER GENERATION
PDF Search Title:
SMALL-SCALE BIOMASS POWER GENERATIONOriginal File Name Searched:
PhD_thesis_Samuel_Carrara.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 |