Wanju_Yuan_Closed-Loop_Geothermal_Energy_Recovery.txt

# Example: Geothermal Electricity Example Problem using Percentage Thermal Drawdown Model and closed loops
# Description: This example problem considers a simple reservoir
# at 2 km depth with an initial production temperature of 145deg.C. The thermal drawdown
# is assumed linear at 0.5%/year. The heat is converted to electricity with a subcritical
# ORC. It is accessed by a closed loop well.

# *** closed loop parameters ***
# ****************************************
Is AGS, True
Has Nonvertical Section, True
Multilaterals Cased, True
Well Geometry Configuration, 1,       ----U-loop (could be Eavor style)
Plant Lifetime, 40, ---Years
Water Thermal Conductivity, 0.65
Nonvertical Length per Multilateral Section, 5001.0
Nonvertical Wellbore Diameter, 0.23495, -----m
Cylindrical Reservoir Radius of Effect Factor, 5.0
Closed Loop Calculation Start Year, 0.1
Number of Multilateral Sections, 3
Well Drilling Cost Correlation,3,				--- [-] Use built-in well drilling cost correlation #3 = vertical open-hole, large diameter
Horizontal Well Drilling Cost Correlation,1,				--- [-] Use built-in well drilling cost correlation #3 = vertical open-hole, large diameter
Reservoir Impedance, 1E-4, ----assume a very low reservoir impedance since the working fluid is never in contact with the reservoir
Production Flow Rate per Well, 1.666666,      -----kg/sec
Injection Temperature, 60,      -----C
Gradient 1,26.25,                          			---[deg.C/km]
Reservoir Depth, 4.0,      ----km
Cylindrical Reservoir Input Depth, 4.0, -----km
Cylindrical Reservoir Output Depth, 4.0, ------km
Cylindrical Reservoir Length, 5.0,     ----km
Reservoir Model,0,                        			---simple cylinder reservoir model
Number of Production Wells,1,            			---[-]
Number of Injection Wells,1,            			---[-]


# *** Subsurface technical parameters ***
# ****************************************
Ramey Production Wellbore Model,0,	--- Should be 0 (disable) or 1 (enable)
Production Wellbore Temperature Drop,0,	--- [deg.C]
Production Flow Rate per Well,110, 	--- [kg/s]
Maximum Temperature,375,		--- [deg.C]
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
Reservoir Heat Capacity,1050,		--- [J/kg/K]


# *** Surface technical parameters ***
# ************************************
End-Use Option,1,			--- [-] Electricity
Power Plant Type,1,			--- [1] Subcritical ORC
Circulation Pump Efficiency,0.8,	--- [-]
Plant Outlet Pressure, 68.95

# *** Economic/Financial Parameters ***
# *************************************
Economic Model,3,			--- Should be 1 (FCR model) 2 (Standard LCOE/LCOH model) or 3 (Bicycle model).
Fraction of Investment in Bonds,0.65,	--- [-] Required if Bicycle model is selected. See manual for details.
Inflated Bond Interest Rate,0.07,	--- [-] Required if Bicycle model is selected. See manual for details.
Inflated Equity Interest Rate,0.12,	--- [-] Required if Bicycle model is selected. See manual for details.
Inflation Rate,0.025,			--- [-] Required if Bicycle model is selected. See manual for details.
Combined Income Tax Rate,0.392,		--- [-] Required if Bicycle model is selected. See manual for details.
Gross Revenue Tax Rate,0,		--- [-] Required if Bicycle model is selected. See manual for details.
Reservoir Stimulation Capital Cost,0,				--- [M$/injection well] Reservoir stimulation capital cost per injection well


# *** Simulation Parameters ***
Print Output to Console,1,		--- [-] Should be 0 (don't print results to console) or 1 (print results to console)