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example7.txt
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# Example 7: Geothermal Direct-Use Example Problem using TOUGH2 Doublet Model (Single Gradient)
# This example problem considers a hydrothermal reservoir simulated
# with the built-in TOUGH2 doublet model. End-use is direct-use heat.
*** Subsurface technical parameters ***
****************************************
Reservoir Model, 6, --- Use TOUGH2 simulator
TOUGH2 Model/File Name,Doublet, --- Use built-in Doublet TOUGH2 model
Reservoir Depth, 3, --- [km]
Number of Segments, 1, --- [-] Should be 1, 2, 3, or 4.
Gradient 1, 50, --- [deg.C/km]
Maximum Temperature, 375, --- [deg.C]
Number of Production Wells, 1, --- [-]
Number of Injection Wells, 1, --- [-]
Production Well Diameter, 8, --- [inch]
Injection Well Diameter, 8, --- [inch]
Ramey Production Wellbore Model, 1, --- Should be 0 (disable) or 1 (enable)
Injection Wellbore Temperature Gain,0, --- [deg.C]
Production Flow Rate per Well, 50, --- [kg/s]
--- Fracture geometry below required for reservoir models 1 and 2
Reservoir Volume Option, 4, --- Should be 1, 2, 3, or 4. See manual for details.
Reservoir Volume, 1E9, --- [m3] (required for reservoir volume option 3 and 4
Water Loss Fraction, 0, --- [-] (total geofluid lost)/(total geofluid produced)
Reservoir Impedance, 0.05, --- [GPa*s/m3]
Injection Temperature, 70, --- [deg.C]
Reservoir Heat Capacity, 1050, --- [J/kg/K]
Reservoir Density, 2700, --- [kg/m3]
Reservoir Thermal Conductivity, 3, --- [W/m/K]
Reservoir Porosity, 0.05, --- [-]
Reservoir Permeability, 6E-13, --- [m2]
Reservoir Thickness, 250, --- [m]
Reservoir Width, 500, --- [m]
Well Separation, 900, --- [m]
*** Surface technical parameters ***
************************************
End-Use Option, 2, --- [-] Direct-Use Heat
Circulation Pump Efficiency, 0.8, --- [-]
Utilization Factor, 0.9, --- [-]
End-Use Efficiency Factor, 0.9, --- [-] End-use efficiency for direct-use heat component
Surface Temperature, 15, --- [deg.C]
Ambient Temperature, 15, --- [deg.C]
*** Economic/Financial Parameters ***
*************************************
Plant Lifetime, 30, --- [years]
Economic Model, 2, --- Should be 1 (FCR model), 2 (Standard LCOE/LCOH model), or 3 (Bicycle model).
Discount Rate, 0.05, --- [-] Required if Standard LCOE/LCOH model is selected. See manual for details.
Inflation Rate During Construction, 0, --- [-]
Well Drilling and Completion Capital Cost Adjustment Factor, 1, --- [-] Adjustment factor for built-in well drilling and completion capital cost correlation
Well Drilling Cost Correlation, 1, --- [-] Use built-in well drilling cost correlation #1
Reservoir Stimulation Capital Cost Adjustment Factor, 0,--- [-] No reservoir stimulation
Surface Plant Capital Cost Adjustment Factor, 1, --- [-] Use built-in correlation as is
Field Gathering System Capital Cost Adjustment Factor, 1,--- [-] Use built-in correlation as is
Exploration Capital Cost Adjustment Factor, 1, --- [-] Use built-in correlation as is
Wellfield O&M Cost Adjustment Factor, 1, --- [-] Use built-in correlation as is
Surface Plant O&M Cost Adjustment Factor, 1, --- [-] Use built-in correlation as is
Water Cost Adjustment Factor, 1, --- [-] Use built-in correlation as is
Electricity Rate, 0.07, --- [$/kWh] Required to calculate pumping cost in direct-use or additional revenue stream in cogen option.
*** Simulation Parameters ***
Print Output to Console, 1, --- [-] Should be 0 (don't print results to console) or 1 (print results to console)
Time steps per year, 4, --- [/year]