Thermal response test numerical modeling using a dynamic simulator

BackgroundBorehole heat exchangers are a growing technology in the area of house/building air conditioning, most of all in northern Europe.MethodsIn order to have a good project, we need to have a reliable value of ground thermal conductivity, which is normally obtained by interpreting the data retrieved by running a thermal response test. Different are the ways of interpreting the data provided by the test (e.g., infinite line source theory, finite line source theory, etc.), and in this paper.ResultsWe will first simulate a thermal response test using finite element subsurface flow system, a heat and flow dynamic simulator.ConclusionsThen, a sensitivity analysis of the effect of the different grout properties on the results of a thermal response test is shown.

[1]  Per Eskilson.  Thermal analysis of heat extraction boreholes , 1987 .

[2]  S. Gehlin,et al.  TED - a mobile equipment for thermal response test : testing and evaluation , 1996 .

[3]  René Lefebvre,et al.  A Review of Thermal Response Test Analysis Using Pumping Test Concepts , 2011, Ground water.

[4]  L. Hu,et al.  Combination of Dependent Realizations Within the Gradual Deformation Method , 2002 .

[5]  Herlander Mata-Lima.  Reservoir characterization with iterative direct sequential co-simulation: Integrating fluid dynamic data into stochastic model , 2008 .

[6]  H. J. L. Witte.  GEOTHERMAL RESPONSE TESTS USING CONTROLLED MULTI-POWER LEVEL HEATING AND COOLING PULSES (MPL-HCP): QUANTIFYING GROUND WATER EFFECTS ON HEAT TRANSPORT AROUND A BOREHOLE HEAT EXCHANGER , 2006 .

[7]  Ning Liu,et al.  Inverse Theory for Petroleum Reservoir Characterization and History Matching , 2008 .

[8]  A. Soares.  Direct Sequential Simulation and Cosimulation , 2001 .

[9]  Benoit Noetinger,et al.  Gradual Deformation and Iterative Calibration of Sequential Stochastic Simulations , 2001 .

[10]  Daniel Castro-Fresno,et al.  Borehole thermal response and thermal resistance of four different grouting materials measured with a TRT , 2013 .

[11]  C. K. Lee,et al.  A modified multi-ground-layer model for borehole ground heat exchangers with an inhomogeneous groundwater flow , 2012 .

[12]  R. Al-Khoury,et al.  Efficient numerical modeling of borehole heat exchangers , 2010, Comput. Geosci..

[13]  R. Bruno,et al.  Geostatistical modeling of a shallow geothermal re- servoir for air conditioning of buildings , 2011 .

[14]  Groenholland Bv.  GEOTHERMAL RESPONSE TESTS USING CONTROLLED MULTI-POWER LEVEL HEATING AND COOLING PULSES (MPL-HCP): QUANTIFYING GROUND WATER EFFECTS ON HEAT TRANSPORT AROUND A BOREHOLE HEAT EXCHANGER , 2006 .

[15]  S. Gehlin.  Thermal response test : method development and evaluation , 2002 .