PDF Publication Title:
Text from PDF Page: 005
generated. However, the temperature of the gas-turbine exhaust is not an independent variable in this type of system; this equation shows that it is dependent upon both the amount of steam injected and the steam temperature. Figure 5 shows how steam injection affects the exhaust temperature. The steam temperature for these cases is 340°C, as in the previous cases. exhaust streams (by applying the aforementioned equation) to determine the amount of steam that can be generated. Figure 6 presents the results of this analysis, showing the amount of steam that can be generated as a function of the amount of steam injected. The steam temperature at each location is 340°C. P0 I D PWT INJECTION zV 15.0 QUiI 100 wx STEAM PRODUCED a. 0 BEGINNING OF O 9B 2 10.0 LPT INJECTION z } / EXCESS STEAM FOR INJECTION BEGINNING OF PWT INJECTION w waw 96 IECTION m 2 Q z_ I- 5.0 0.0 wa2wt- STEAM/INLET AIR BY MASS (PERCENT) FIGURE 5 EXHAUST TEMPERATURE VS. STEAM INJECTION RATE (COMPARISON OF EFFECT OF INJECTION LOCATIONS) Figure 5 shows that for every unit increment of steamrnlet air, the exhaust temperature decreases by an average of: 0.5% with HPT injection, 0.7% with LPT injection, and 0.4% with PWT injection. In general, steam injection lowers the exhaust temperature because it cools the flow into the turbines. Since the entrance to the low-pressure turbine is hotter than the entrance to the power turbine, the effect of LPT injection on the exhaust temperature is stronger because there is a greater difference in temperature where the flows mix. With HPT injection, the increased power requirement of the compressor demands a larger temperature-drop across the turbine, thereby reducing the exhaust temperature even though T4 is constant. As expected, increasing the steam temperature decreases the reduction in exhaust temperature, except with HPT injection, for which the constant value of T4 does not affect the reduction in exhaust temperature. SELECTING A STEAM-INJECTED DESIGN POINT The final criterion for selecting a steam-injected design point is the balancing of the energy between the steam and 5 Ui 97 0.0 5.0 10.0 0 1 2 3 4 15.0 STEAM/1NLET AIR INJECTED BY MASS (PERCENT) FIGURE 6 STEAM PRODUCTION AND INJECTION CAPABILITY VS. STEAM INJECTION RATE (STEAM TEMP. = 340°C) In Figure 6, the upper curve represents the amount of steam that can be generated for the given set of temperatures, while the lower curve is the difference between that and the amount injected, equaling the amount remaining to be injected. When the lower curve intersects the abscissa, then all of the steam available for injection has been used. Assuming, for this study, that the design point will be selected to optimize performance and use all of the available steam, then the trends in gas-turbine behavior from the preceding sections can be used in conjunction with the theory behind Figure 6 to select a steam-injected design point intelligently. Since performance is mostly dependent on the amount of steam injected, extending the intersection point on the abscissa is one of the primary goals. In general, the use of lower-temperature steam will allow more steam to be generated. However, cooler steam detracts from performance; it also lowers the exhaust temperature, thereby reducing the potential for steam generation. Since changes in both engine performance and the exhaust temperature are insensitive to the temperature of the steam for HPT injection, there is no penalty on Downloaded From: http://proceedings.asmedigitalcollection.asme.org/ on 02/26/2015 Terms of Use: http://asme.org/termsPDF Image | Thermodynamic Design Considerations Steam injected gas turbines
PDF Search Title:
Thermodynamic Design Considerations Steam injected gas turbinesOriginal File Name Searched:
steam-injected-gas-turbine.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 |