PDF Publication Title:
Text from PDF Page: 006
Welch and Boyle table 2. Component efficiencies and parameters for VPC/ORC study. Heat Exchanger Pinch Point Heat Input (@ 160 °F return) ORC expander shaft efficiency VPT nozzle efficiency Generator Efficiency Gearbox Efficiency (ORC) Recuperator (optional) pinch Pump Motor Efficiency respectively. Net electrical power is shown without taking into account the parasitic cooling load which will be site dependent and identical for an ORC or VPC at a given return temperature. Clearly, the power increases at the geothermal return temperature is reduced. The VPC is able to produce more power than the ORC under almost all conditions and shows strong benefits as the return temperature is lowered. 4600 4400 4200 4000 3800 3600 3400 3200 3000 R134a Performance vs Outlet Fluid Temperature 97% Gen, 98% Gear, 77% Pump, 95% Motor, 80 degF Tcond, 100 MMBTU/hr @ 350F inlet, 160 F outlet VPC w/ Recup VPC ORC w/ Recup ORC 10 °F 100 MMBTU/hr 82% 92-97% Calculated 78-85% Calculated VPT rotor efficiency Pump shaft efficiency 77% 97% 98% As with all geothermal installations, the minimum return temperature—which is dependant on water chemistry—must be determined. Novel heat exchanger designs and cleaning tech- niques have been developed which reduce the minimum return Figure 14c. VPC vs. ORC for R134a - 350 °F geothermal inlet temperature. temperature and should be considered when designing the plant. Also, the availability of direct uses of the warm return water will affect the optimum design point. Variable Phase turbine: Application to the Variable Phase cycle 4000 3800 3600 3400 3200 3000 2800 2600 R134a Performance vs Outlet Fluid Temperature 97% Gen, 98% Gear, 77% Pump, 95% Motor, 80 degF Tcond, 100 MMBTU/hr @ 250F inlet, 160 F outlet Designed for two-phase expansions, the Variable Phase Tur- bine allows for efficient utilization of the VPC. The VPT is also suitable for supercritical versions of the VPC. 60 °F 95% 110 115 120 125 130 135 140 145 150 155 160 Outlet Fluid Temperature (degF) VPC ORC Figure 15 is a schematic of the Variable Phase cycle applied to geothermal power generation. 110 115 120 125 130 135 140 145 150 155 160 Geothermal fluid enters the heat exchanger where the avail- able heat energy is transferred into the energy conversion working fluid. After heating in the heat exchanger the liquid is flashed in two-phase nozzles which are integral parts of the hermetic Vari- able Phase Turbine assembly. The high momentum, low velocity two-phase stream drives the turbine rotor at synchronous speed to the generator. This eliminates the need for the expensive gearbox required for ORC vapor turbine systems and thereby improves reliability and reduces maintenance. Outlet Fluid Temperature (degF) The use of refrigerant working fluids in the VPC enables lubrication and cooling of the generator by the working fluid. The lube oil system required for ORC systems is eliminated, as are seals. The result is a zero emissions hermetic assembly Figure 14a. VPC vs. ORC for R134a - 250 °F geothermal inlet temperature. 4600 4400 4200 4000 3800 3600 3400 3200 3000 R134a Performance vs Outlet Fluid Temperature 97% Gen, 98% Gear, 77% Pump, 95% Motor, 80 degF Tcond, 100 MMBTU/hr @ 300F inlet, 160 F outlet VPC w/ Recup VPC ORC w/ Recup ORC 110 115 120 125 130 135 140 145 150 155 160 Outlet Fluid Temperature (degF) Figure 14b. VPC vs. ORC for R134a - 300 °F geothermal inlet temperature. Figure 15. Variable Phase cycle process flow diagram. 770 Net Power (kWe) - no Cooling Parasitic Net Power (kWe) - no Cooling Parasitic Net Power (kWe) - no Cooling ParasiticPDF Image | New turbines to Enable Efficient Geothermal Power Plants
PDF Search Title:
New turbines to Enable Efficient Geothermal Power PlantsOriginal File Name Searched:
Geothermal_Resources_Council_2009_Paper.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 |