PDF Publication Title:
Text from PDF Page: 012
3.5 Usable Energy – Converting Heat to Power Recoverable EGS Resource Estimates Once the amount of recoverable heat from the reservoir has been estimated, it needs to be converted to usable energy, which we assume for this exercise is electricity. Field experience with EGS testing led us to believe that we can extract the heat from the rock for extended periods, with minimal thermal drawdown, if we design and operate the system carefully. As a first approximation, we assume that the production temperature of the fluid at the surface is the average temperature of the rock volume. It is important to note that we are not neglecting the thermal decline within the reservoir that certainly occurs – we are just restricting it to correspond to a specified decline in the average rock temperature at a given depth. Recovered amounts are then estimated from the resource base figures given in Chapter 2 (Figure 2.6) for the conterminous United States. 313 Table 3.1 Cycle thermal efficiencies used for energy conversion (see Chapter 7). Temperature, °C Cycle Thermal Efficiency η 150 11 200 14 250 16 , % 300 18 350 22 The power cycle employed, and the ambient surface temperatures along with the fluid temperature, determine the energy conversion efficiency. Chapter 7 discusses power cycles in general, including the conversion efficiency, temperature drop through the system, and other aspects of the conversion of the recoverable heat into electricity. The percentage of heat that can be converted to electricity is quantitatively represented by the thermal efficiency, i.e., the fraction of the total heat delivered to the power cycle by the circulating geofluid that is converted to electrical energy. Thermal efficiencies are based on Figure 7.2 for binary plants at resource temperatures under 200°C, and on the discussion in Section 7.2.2 for flash plants at temperatures above 200°C. The effects of ambient temperature, cooling method, and the powerconversion cycle itself are included. Using the net cycle efficiency allows us to convert the recoverable thermal energy for different temperature resources to electric energy. Table 3.1 shows the utilization efficiencies from Chapter 7 used for this conversion. Chapter 3 th To relate electrical energy to a potential electricgenerating capacity, this energy will need to be converted to electric power (power is energy transfer per unit of time). In order to convert electrical energy to electrical power, we need to consider the time over which the energy will be produced. One option is to look at the resource from a project lifetime standpoint. This is the approach used by the United States Geological Survey (USGS) in Circular 790 (Muffler and Guffanti, 1978), where they assumed a project life of 20 years and divided the recoverable energy reserves by the number of seconds in 20 years. Since the time of that report, several geothermal projects have been operated for as long as 30 years, and most project planning for future geothermal projects assumes that each plant will last at least 30 years. Assuming this is the case, the average MWe of capacity that would result is given by:PDF Image | Recoverable EGS
PDF Search Title:
Recoverable EGSOriginal File Name Searched:
egs_chapter_3.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 |