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Table 4 Simulated scenarios for the sensitivity analysis

From: Optimization of the utilization of deep borehole heat exchangers

Scenario IDOuter pipe diameter (m)Inner pipe diameter (m)Flow rate (L s−1)Outer pipe wall thermal conductivity (W m−1 K−1)Grout thermal conductivity (W m−1 K−1)DBHE depth (m)Rock typeDescription
#1A-CVar0.0911.60.50.732000Sandstone#1A, #1D, #1G correspond to the minimum thermal conductivity value
#1D-FVar0.0911.60.50.732000Limestone#1B, #1E, #1H correspond to the average thermal conductivity value
#1G-IVar0.0911.60.50.732000Granite#1C, #1F, #1I correspond to the maximum thermal conductivity value
#2A-C0.177Var11.60.50.732000Sandstone#2A, #2D, #2G correspond to the minimum thermal conductivity value
#2D-F0.177Var11.60.50.732000Limestone#2B, #2E, #2H correspond to the average thermal conductivity value
#2G-I0.177Var11.60.50.732000Granite#2C, #2F, #2I correspond to the maximum thermal conductivity value
#3A-C0.1770.09Var0.50.732000Sandstone#3A, #3D, #3G correspond to the minimum thermal conductivity value
#3D-F0.1770.09Var0.50.732000Limestone#3B, #3E, #3H correspond to the average thermal conductivity value
#3G-I0.1770.09Var0.50.732000Granite#3C, #3F, #3I correspond to the maximum thermal conductivity value
#4A-C0.1770.0911.6Var0.732000Sandstone#4A, #4D, #4G correspond to the minimum thermal conductivity value
#4D-F0.1770.0911.6Var0.732000Limestone#4B, #4E, #4H correspond to the average thermal conductivity value
#4G-I0.1770.0911.6Var0.732000Granite#4C, #4F, #4I correspond to the maximum thermal conductivity value
#5A-C0.1770.0911.60.5Var2000Sandstone#5A, #5D, #5G correspond to the minimum thermal conductivity value
#5D-F0.1770.0911.60.5Var2000Limestone#5B, #5E, #5H correspond to the average thermal conductivity value
#5G-I0.1770.0911.60.5Var2000Granite#5C, #5F, #5I correspond to the maximum thermal conductivity value
#6A-C0.1770.0911.60.50.73varSandstone#6A, #6D, #6G correspond to the minimum thermal conductivity value
#6D-F0.1770.0911.60.50.73varLimestone#6B, #6E, #6H correspond to the average thermal conductivity value
#6G-I0.1770.0911.60.50.73varGranite#6C, #6F, #6I correspond to the maximum thermal conductivity value